Suitable Battery Types: Li-ion/LiFePo4 Equilization Accuracy: 0.005-0.01V Balance Current: 10A Suitable Battery Capacity: 20AH Working Temperature: -10°C-60°C<br><br>Colour:Black Material:ABS Notice: 1. The greater the voltage difference, the larger the balance current. 2. It's not , it does not have the over-voltage, over-current and over discharge protection, but it can work with or Battery Protection Board together. 3. Support balanced cascading for battery packs.<br><br>Package Contents: 1 * 4S Active balancing module kit<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.