To find a compatible LiPo (lithium polymer) balance battery charger, look for one designed specifically for 3S 4S 11.1 - 14.8V Lipo Battery Charger, AC110-240V input, max charge current: 3000mA. Ideally, one with a display screen that shows the actual voltage.
Here is a link to one on Amazon for your convenience. https://www.amazon.com/dp/B0F7XVSL9Y
Note: This RC Lipo balance charger is just suitable for LiPo Battery, can not charge for 3S and 4S LiPo battery at the same time. The screen shows the voltage and power directly, easy to read and charge.
Apr 13, 2026