[Discharge function] Leaving a Li-ion battery in an empty or fully charged state for a long period of time can shorten the battery's lifespan, but the discharge function of this checker will automatically discharge the battery to the appropriate voltage you set. It makes battery management very easy.
[Balancer function] Multi-cell (two cells in the case of WPL) Li-ion batteries can maintain stable performance over a long period of time by regularly matching the voltage of each cell.
[Video now available] Please watch this video for details on how to use the checker and how to manage your battery.