ISDT BL8 LiPo Battery Checker 2S-8S Smart Active Balancer XH2.54 Cell Voltage RC Battery Tester with High Accuracy Color Screen App Remote Control[LiPo Battery Tester for 2S8S Packs] A compact RC battery tester and battery monitor for packs with XH2. 54 balance connectorquickly view each cell voltage and total voltage at a glance. [3A Active Balance] Battery balancer built in active balancing transfers energy between cells instead of burning it off as heat, helping reduce cell mismatch more efficiently. Up to 3A balancing current. [High Accuracy Cell Voltage Meter] Shows real cell voltage with