1. LED display real-time voltage 2. Voice-activated display reduces power consumption 3. Energy transfer active equalizer 4. The equalization speed is fast and the loss is small 5. Protection class P67 reverse polarity protection Product Description: Battery nominal voltage: 4x6-12V Compensation current: 0-10A Protection: Reverse policyholder Undervoltage shutdown value: 6V Display accuracy: about 0.5% Scope of application: suitable for all batteries size: 12.4 x 6.2 x 2.7cm Material: ABS colour: black Package Contents: 1 x Battery Equalizer 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.