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Want to charge 350 mah battery with tp4056 but current is too high

IhaveAsolder

Jul 2, 2023
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I have a 350 mah 3.7v lipo battery and I want to charge it with tp4056 charger module but it says module gives 1A max current and its too much for this battery. I saw they change the current by changing a resistor. Should I do that or if dont, will it harm the battery?
 

Delta Prime

Jul 29, 2020
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It'll work! It will not harm your battery.
Charging Li‑ion polymer, also referred as Li-polymer(lipo), is very similar to a regular lithium-ion battery and no changes in algorithm are necessary,your charger will work fine. Most users won’t even know if their battery is Li‑ion or Li‑polymer. The word “polymer” has been used as promotional hype and does not reflect special attributes other than to know that the battery is built in a different way to a standard Li-ion.
Most polymer batteries are based on a hybrid architecture that is a cross between Li-ion and Li-polymer. There are many variations within the polymer family, and the true dry polymer battery for the consumer market is still years away.
 

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Delta Prime

Jul 29, 2020
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. I saw they change the current by changing a resistor. Should I do that or if dont,
Yes you should do that that's what it's for it's for programming the charge current. It gives the equation all you have to do is put in the values. They call it chug & plug on a calculator.
Program pin (2)
Once it is programmed for 350 milliamps. You cannot use it for another battery that may have a current capacity of 400 milliamps.

Screenshot_20230702_080811.jpg
 

Bluejets

Oct 5, 2014
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I have a 350 mah 3.7v lipo battery and I want to charge it with tp4056 charger module
There is a small modification where one changes the sense resistor (R3) to give apropriate charge rates.
The manufacturer spec even includes recommended values.

Link to one particular video on how to............
 

Delta Prime

Jul 29, 2020
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That is very true I misspoke I concede to you good sir. Thank you for the information it has been a learning experience for me and I'm sure the thread starter as well
 
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