is it ok to reduce charging current for li ion 18650 battery? The Next CEO of Stack Overflowwhat is the minimum charging current for NCR18650 li ion battery?Charging 2 Li-Ion Batteries via a single chargerPowering a Raspberry Pi Rover with Lithium Ion Batteries and Charging ThemAppropriate charging current for parallel 18650 lithium cellsCharging low voltage 18650 batteriesLi-ion battery charging and cell balancingLi-ion battery Charging IssueUsing an undersized LiPo/Li-ion charger for large pack of 18650 batteriesCharging a 18650 battery using a 5V chargerIs less than 1A enough for TP4056 module to charge one battery?is it OK to use battery while charging?

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is it ok to reduce charging current for li ion 18650 battery?



The Next CEO of Stack Overflowwhat is the minimum charging current for NCR18650 li ion battery?Charging 2 Li-Ion Batteries via a single chargerPowering a Raspberry Pi Rover with Lithium Ion Batteries and Charging ThemAppropriate charging current for parallel 18650 lithium cellsCharging low voltage 18650 batteriesLi-ion battery charging and cell balancingLi-ion battery Charging IssueUsing an undersized LiPo/Li-ion charger for large pack of 18650 batteriesCharging a 18650 battery using a 5V chargerIs less than 1A enough for TP4056 module to charge one battery?is it OK to use battery while charging?










1












$begingroup$


I am using NCR18650 batteries with tp4056 charging module,



when I connect the charger at 2.8V (fully discharged) tp4056 IC is getting hot at 1A charge current, is it ok to reduce this charge current by changing the charge current selecting resistor?
so tp4056 IC heat will reduce, isn't it?



for my application I don't need a quick charge, with low current charging time will be increased but it does not matter for my application.



I need to know,
is reducing charge current will affect the batteries lifetime?
or will it damage the battery?



I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, 18650 battery never heats for 1A charge current









share









New contributor




komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    I believe that it is fairly widely known that charging the li ion cells at a lower current actually extends the battery life in terms of the number of charge/discharge cycles that they can handle.
    $endgroup$
    – Michael Karas
    10 hours ago















1












$begingroup$


I am using NCR18650 batteries with tp4056 charging module,



when I connect the charger at 2.8V (fully discharged) tp4056 IC is getting hot at 1A charge current, is it ok to reduce this charge current by changing the charge current selecting resistor?
so tp4056 IC heat will reduce, isn't it?



for my application I don't need a quick charge, with low current charging time will be increased but it does not matter for my application.



I need to know,
is reducing charge current will affect the batteries lifetime?
or will it damage the battery?



I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, 18650 battery never heats for 1A charge current









share









New contributor




komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    I believe that it is fairly widely known that charging the li ion cells at a lower current actually extends the battery life in terms of the number of charge/discharge cycles that they can handle.
    $endgroup$
    – Michael Karas
    10 hours ago













1












1








1





$begingroup$


I am using NCR18650 batteries with tp4056 charging module,



when I connect the charger at 2.8V (fully discharged) tp4056 IC is getting hot at 1A charge current, is it ok to reduce this charge current by changing the charge current selecting resistor?
so tp4056 IC heat will reduce, isn't it?



for my application I don't need a quick charge, with low current charging time will be increased but it does not matter for my application.



I need to know,
is reducing charge current will affect the batteries lifetime?
or will it damage the battery?



I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, 18650 battery never heats for 1A charge current









share









New contributor




komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




I am using NCR18650 batteries with tp4056 charging module,



when I connect the charger at 2.8V (fully discharged) tp4056 IC is getting hot at 1A charge current, is it ok to reduce this charge current by changing the charge current selecting resistor?
so tp4056 IC heat will reduce, isn't it?



for my application I don't need a quick charge, with low current charging time will be increased but it does not matter for my application.



I need to know,
is reducing charge current will affect the batteries lifetime?
or will it damage the battery?



I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, 18650 battery never heats for 1A charge current







batteries battery-charging lithium-ion liion





share









New contributor




komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.










share









New contributor




komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








share



share








edited 9 hours ago







komto909













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Check out our Code of Conduct.









asked 10 hours ago









komto909komto909

84




84




New contributor




komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






komto909 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











  • $begingroup$
    I believe that it is fairly widely known that charging the li ion cells at a lower current actually extends the battery life in terms of the number of charge/discharge cycles that they can handle.
    $endgroup$
    – Michael Karas
    10 hours ago
















  • $begingroup$
    I believe that it is fairly widely known that charging the li ion cells at a lower current actually extends the battery life in terms of the number of charge/discharge cycles that they can handle.
    $endgroup$
    – Michael Karas
    10 hours ago















$begingroup$
I believe that it is fairly widely known that charging the li ion cells at a lower current actually extends the battery life in terms of the number of charge/discharge cycles that they can handle.
$endgroup$
– Michael Karas
10 hours ago




$begingroup$
I believe that it is fairly widely known that charging the li ion cells at a lower current actually extends the battery life in terms of the number of charge/discharge cycles that they can handle.
$endgroup$
– Michael Karas
10 hours ago










3 Answers
3






active

oldest

votes


















3












$begingroup$

Yes it is OK to reduce the charging current and that is what the TP4056's charging current setting resistor is for. If you halve the charging current, charging will of course take longer. Charging slower (but not too slow) should actually increase battery lifetime. But for an 18650 cell, 1 A charging current is reasonably normal.



2.8 V is a very low voltage for a Li-Ion cell, if you discharge often to such a low voltage the battery's lifetime might be shorter. I would prefer not to discharge below 3.4 V.






share|improve this answer









$endgroup$












  • $begingroup$
    I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
    $endgroup$
    – komto909
    9 hours ago



















2












$begingroup$

The regular NCR18650 Panasonic battery has the recommended charge current at 0.7C, or about 2A. And the discharge threshold is 2.5V, according to manufacturer's discharge curves. So you are charging the battery already at half permissible rate. Formally yes, charging a Li-Ion battery at slower rate doesn't do any damage and might be even better for battery's SOH (State of Health). It will just take longer.



The TP4056 is a LINEAR charge controller, so it will dissipate a lot of heat and will be hot, if the board is designed with improper heat sink. If you are concerned with IC overheating, you should either make a better heat sink (at least over the top if IC), or reduce input voltage to, say, 4.5V. It will still dissipate 0.3- 0.5W and should be warm. Or get a different TP4056 charger board with a better constructed PCB and with bottom heat slug soldered down to it. Or get a better charger system. Reducing charging current of TP4056 will be the least optimal solution.






share|improve this answer









$endgroup$












  • $begingroup$
    so its not ok to charge NCR18650 with 500mA charge current?
    $endgroup$
    – komto909
    8 hours ago











  • $begingroup$
    @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
    $endgroup$
    – Ale..chenski
    7 hours ago










  • $begingroup$
    kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
    $endgroup$
    – komto909
    7 hours ago











  • $begingroup$
    @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
    $endgroup$
    – Ale..chenski
    7 hours ago










  • $begingroup$
    I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
    $endgroup$
    – Harper
    5 hours ago



















0












$begingroup$

I use TP4056 charger boards a lot, both on their own and embedded in some devices. In addition to existing answers, I'd like to mention this - it's OK for TP4056 to heat up, it's a linear charger and it heating up doesn't impact its performance/reliability all that much. As long as the board has proper heatsinking, you should be fine - i.e. the popular "blue PCB with USB port" chargers from China have good enough heatsinking, as they tend to connect the ground pad of the TP4056 to copper-filled areas on both layers (sometimes only one, bottom one, with vias).



If it's a custom board that you yourself designed and it doesn't connect the ground pad to anywhere useful, only then I'd be worried - in that case, swapping the current set resistor for ~2K (that's what you need for ~500mA IIRC) should do the job. Otherwise, you should be fine as you are now, with 1A charging.






share|improve this answer









$endgroup$













    Your Answer





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    3 Answers
    3






    active

    oldest

    votes








    3 Answers
    3






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    3












    $begingroup$

    Yes it is OK to reduce the charging current and that is what the TP4056's charging current setting resistor is for. If you halve the charging current, charging will of course take longer. Charging slower (but not too slow) should actually increase battery lifetime. But for an 18650 cell, 1 A charging current is reasonably normal.



    2.8 V is a very low voltage for a Li-Ion cell, if you discharge often to such a low voltage the battery's lifetime might be shorter. I would prefer not to discharge below 3.4 V.






    share|improve this answer









    $endgroup$












    • $begingroup$
      I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
      $endgroup$
      – komto909
      9 hours ago
















    3












    $begingroup$

    Yes it is OK to reduce the charging current and that is what the TP4056's charging current setting resistor is for. If you halve the charging current, charging will of course take longer. Charging slower (but not too slow) should actually increase battery lifetime. But for an 18650 cell, 1 A charging current is reasonably normal.



    2.8 V is a very low voltage for a Li-Ion cell, if you discharge often to such a low voltage the battery's lifetime might be shorter. I would prefer not to discharge below 3.4 V.






    share|improve this answer









    $endgroup$












    • $begingroup$
      I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
      $endgroup$
      – komto909
      9 hours ago














    3












    3








    3





    $begingroup$

    Yes it is OK to reduce the charging current and that is what the TP4056's charging current setting resistor is for. If you halve the charging current, charging will of course take longer. Charging slower (but not too slow) should actually increase battery lifetime. But for an 18650 cell, 1 A charging current is reasonably normal.



    2.8 V is a very low voltage for a Li-Ion cell, if you discharge often to such a low voltage the battery's lifetime might be shorter. I would prefer not to discharge below 3.4 V.






    share|improve this answer









    $endgroup$



    Yes it is OK to reduce the charging current and that is what the TP4056's charging current setting resistor is for. If you halve the charging current, charging will of course take longer. Charging slower (but not too slow) should actually increase battery lifetime. But for an 18650 cell, 1 A charging current is reasonably normal.



    2.8 V is a very low voltage for a Li-Ion cell, if you discharge often to such a low voltage the battery's lifetime might be shorter. I would prefer not to discharge below 3.4 V.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 10 hours ago









    BimpelrekkieBimpelrekkie

    51k246114




    51k246114











    • $begingroup$
      I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
      $endgroup$
      – komto909
      9 hours ago

















    • $begingroup$
      I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
      $endgroup$
      – komto909
      9 hours ago
















    $begingroup$
    I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
    $endgroup$
    – komto909
    9 hours ago





    $begingroup$
    I am trying to reduce the heat of tp4056 IC by reducing the charging current may be from 1 A to 500mA or more lesser, with 1A charge current tp4056 ic gets heat up a lot, 18650 battery never heats for 1A charge current
    $endgroup$
    – komto909
    9 hours ago














    2












    $begingroup$

    The regular NCR18650 Panasonic battery has the recommended charge current at 0.7C, or about 2A. And the discharge threshold is 2.5V, according to manufacturer's discharge curves. So you are charging the battery already at half permissible rate. Formally yes, charging a Li-Ion battery at slower rate doesn't do any damage and might be even better for battery's SOH (State of Health). It will just take longer.



    The TP4056 is a LINEAR charge controller, so it will dissipate a lot of heat and will be hot, if the board is designed with improper heat sink. If you are concerned with IC overheating, you should either make a better heat sink (at least over the top if IC), or reduce input voltage to, say, 4.5V. It will still dissipate 0.3- 0.5W and should be warm. Or get a different TP4056 charger board with a better constructed PCB and with bottom heat slug soldered down to it. Or get a better charger system. Reducing charging current of TP4056 will be the least optimal solution.






    share|improve this answer









    $endgroup$












    • $begingroup$
      so its not ok to charge NCR18650 with 500mA charge current?
      $endgroup$
      – komto909
      8 hours ago











    • $begingroup$
      @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
      $endgroup$
      – komto909
      7 hours ago











    • $begingroup$
      @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
      $endgroup$
      – Harper
      5 hours ago
















    2












    $begingroup$

    The regular NCR18650 Panasonic battery has the recommended charge current at 0.7C, or about 2A. And the discharge threshold is 2.5V, according to manufacturer's discharge curves. So you are charging the battery already at half permissible rate. Formally yes, charging a Li-Ion battery at slower rate doesn't do any damage and might be even better for battery's SOH (State of Health). It will just take longer.



    The TP4056 is a LINEAR charge controller, so it will dissipate a lot of heat and will be hot, if the board is designed with improper heat sink. If you are concerned with IC overheating, you should either make a better heat sink (at least over the top if IC), or reduce input voltage to, say, 4.5V. It will still dissipate 0.3- 0.5W and should be warm. Or get a different TP4056 charger board with a better constructed PCB and with bottom heat slug soldered down to it. Or get a better charger system. Reducing charging current of TP4056 will be the least optimal solution.






    share|improve this answer









    $endgroup$












    • $begingroup$
      so its not ok to charge NCR18650 with 500mA charge current?
      $endgroup$
      – komto909
      8 hours ago











    • $begingroup$
      @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
      $endgroup$
      – komto909
      7 hours ago











    • $begingroup$
      @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
      $endgroup$
      – Harper
      5 hours ago














    2












    2








    2





    $begingroup$

    The regular NCR18650 Panasonic battery has the recommended charge current at 0.7C, or about 2A. And the discharge threshold is 2.5V, according to manufacturer's discharge curves. So you are charging the battery already at half permissible rate. Formally yes, charging a Li-Ion battery at slower rate doesn't do any damage and might be even better for battery's SOH (State of Health). It will just take longer.



    The TP4056 is a LINEAR charge controller, so it will dissipate a lot of heat and will be hot, if the board is designed with improper heat sink. If you are concerned with IC overheating, you should either make a better heat sink (at least over the top if IC), or reduce input voltage to, say, 4.5V. It will still dissipate 0.3- 0.5W and should be warm. Or get a different TP4056 charger board with a better constructed PCB and with bottom heat slug soldered down to it. Or get a better charger system. Reducing charging current of TP4056 will be the least optimal solution.






    share|improve this answer









    $endgroup$



    The regular NCR18650 Panasonic battery has the recommended charge current at 0.7C, or about 2A. And the discharge threshold is 2.5V, according to manufacturer's discharge curves. So you are charging the battery already at half permissible rate. Formally yes, charging a Li-Ion battery at slower rate doesn't do any damage and might be even better for battery's SOH (State of Health). It will just take longer.



    The TP4056 is a LINEAR charge controller, so it will dissipate a lot of heat and will be hot, if the board is designed with improper heat sink. If you are concerned with IC overheating, you should either make a better heat sink (at least over the top if IC), or reduce input voltage to, say, 4.5V. It will still dissipate 0.3- 0.5W and should be warm. Or get a different TP4056 charger board with a better constructed PCB and with bottom heat slug soldered down to it. Or get a better charger system. Reducing charging current of TP4056 will be the least optimal solution.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered 9 hours ago









    Ale..chenskiAle..chenski

    28.9k11866




    28.9k11866











    • $begingroup$
      so its not ok to charge NCR18650 with 500mA charge current?
      $endgroup$
      – komto909
      8 hours ago











    • $begingroup$
      @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
      $endgroup$
      – komto909
      7 hours ago











    • $begingroup$
      @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
      $endgroup$
      – Harper
      5 hours ago

















    • $begingroup$
      so its not ok to charge NCR18650 with 500mA charge current?
      $endgroup$
      – komto909
      8 hours ago











    • $begingroup$
      @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
      $endgroup$
      – komto909
      7 hours ago











    • $begingroup$
      @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
      $endgroup$
      – Ale..chenski
      7 hours ago










    • $begingroup$
      I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
      $endgroup$
      – Harper
      5 hours ago
















    $begingroup$
    so its not ok to charge NCR18650 with 500mA charge current?
    $endgroup$
    – komto909
    8 hours ago





    $begingroup$
    so its not ok to charge NCR18650 with 500mA charge current?
    $endgroup$
    – komto909
    8 hours ago













    $begingroup$
    @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
    $endgroup$
    – Ale..chenski
    7 hours ago




    $begingroup$
    @komto909, 500 mA is ok, it is just very suboptimal, and it will take 7-8 hours to be fully charged, instead of 2 hours at normal charge rate.
    $endgroup$
    – Ale..chenski
    7 hours ago












    $begingroup$
    kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
    $endgroup$
    – komto909
    7 hours ago





    $begingroup$
    kindly get to the point, will 500mA affect the battery in a negative way? will it reduce battery performance or life cycle? 7-8hours charging time is ok for me, charing time for full charge does not matter at all for my application
    $endgroup$
    – komto909
    7 hours ago













    $begingroup$
    @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
    $endgroup$
    – Ale..chenski
    7 hours ago




    $begingroup$
    @komto909, you still need to complete the charge cycle in a reasonable time. 500 mA is likely okay, but I wouldn't make any predictions if you will keep charging the cell 24/7 due to very low charging.
    $endgroup$
    – Ale..chenski
    7 hours ago












    $begingroup$
    I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
    $endgroup$
    – Harper
    5 hours ago





    $begingroup$
    I would expect charging to be more efficient at lower charge rates, since every other battery type works that way. Half charge rate should be somewhat better than double charge time.
    $endgroup$
    – Harper
    5 hours ago












    0












    $begingroup$

    I use TP4056 charger boards a lot, both on their own and embedded in some devices. In addition to existing answers, I'd like to mention this - it's OK for TP4056 to heat up, it's a linear charger and it heating up doesn't impact its performance/reliability all that much. As long as the board has proper heatsinking, you should be fine - i.e. the popular "blue PCB with USB port" chargers from China have good enough heatsinking, as they tend to connect the ground pad of the TP4056 to copper-filled areas on both layers (sometimes only one, bottom one, with vias).



    If it's a custom board that you yourself designed and it doesn't connect the ground pad to anywhere useful, only then I'd be worried - in that case, swapping the current set resistor for ~2K (that's what you need for ~500mA IIRC) should do the job. Otherwise, you should be fine as you are now, with 1A charging.






    share|improve this answer









    $endgroup$

















      0












      $begingroup$

      I use TP4056 charger boards a lot, both on their own and embedded in some devices. In addition to existing answers, I'd like to mention this - it's OK for TP4056 to heat up, it's a linear charger and it heating up doesn't impact its performance/reliability all that much. As long as the board has proper heatsinking, you should be fine - i.e. the popular "blue PCB with USB port" chargers from China have good enough heatsinking, as they tend to connect the ground pad of the TP4056 to copper-filled areas on both layers (sometimes only one, bottom one, with vias).



      If it's a custom board that you yourself designed and it doesn't connect the ground pad to anywhere useful, only then I'd be worried - in that case, swapping the current set resistor for ~2K (that's what you need for ~500mA IIRC) should do the job. Otherwise, you should be fine as you are now, with 1A charging.






      share|improve this answer









      $endgroup$















        0












        0








        0





        $begingroup$

        I use TP4056 charger boards a lot, both on their own and embedded in some devices. In addition to existing answers, I'd like to mention this - it's OK for TP4056 to heat up, it's a linear charger and it heating up doesn't impact its performance/reliability all that much. As long as the board has proper heatsinking, you should be fine - i.e. the popular "blue PCB with USB port" chargers from China have good enough heatsinking, as they tend to connect the ground pad of the TP4056 to copper-filled areas on both layers (sometimes only one, bottom one, with vias).



        If it's a custom board that you yourself designed and it doesn't connect the ground pad to anywhere useful, only then I'd be worried - in that case, swapping the current set resistor for ~2K (that's what you need for ~500mA IIRC) should do the job. Otherwise, you should be fine as you are now, with 1A charging.






        share|improve this answer









        $endgroup$



        I use TP4056 charger boards a lot, both on their own and embedded in some devices. In addition to existing answers, I'd like to mention this - it's OK for TP4056 to heat up, it's a linear charger and it heating up doesn't impact its performance/reliability all that much. As long as the board has proper heatsinking, you should be fine - i.e. the popular "blue PCB with USB port" chargers from China have good enough heatsinking, as they tend to connect the ground pad of the TP4056 to copper-filled areas on both layers (sometimes only one, bottom one, with vias).



        If it's a custom board that you yourself designed and it doesn't connect the ground pad to anywhere useful, only then I'd be worried - in that case, swapping the current set resistor for ~2K (that's what you need for ~500mA IIRC) should do the job. Otherwise, you should be fine as you are now, with 1A charging.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 5 hours ago









        Арсений ПичугинАрсений Пичугин

        14019




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