Battery

Hi, I have few samsung batterys rated 2600mAH 3.7V so they have four pins 1 Vcc and other three gnd which means 3s battery so if i would be using it in a project how could i charge them like which circuit shall i use

A 3.7V battery is NOT 3S. 3S li-ion/lipo = 11.1V nominal.

Samsung mobile phone batteries 4 terminals are usually +, -. temp and a 1-wire data pin (probably not in that order). If you don't know what you're doing it's best not to mess with them.

Steve

Hi,
Photo would be worth a thousand words..

Thanks.. Tom... :slight_smile:

I tested 1st terminal is + and 3rd is negative and this is link to battery https://www.amazon.com/Replacement-SM-J500F-2600mAh-EB-BG531BBE-Battery/dp/B07G9YHFKX

Hi,
OPs battery;
41V2jmsMmjL.jpg

Tom... :slight_smile:

41V2jmsMmjL.jpg