This is a 4S LiFePo4 / lithium ion / LTO 10A 4 Channel Battery equalizer used for a 12V battery pack.
This device acts as a balancer/equalizer to balance the capacity of cells inside a 12V battery pack.
This is not a Bluetooth balancer/equalizer.
This can be used in lithium battery applications including solar, RV, Electric bikes, Skate board, camping, Boat, Power tools, Lawn mowing and household energy storage systems.
This can be used in Lithium batteries of any type including 18650 / 21700 / 32650 / 38120 / 66150 and any type of prismatic cells etc.
This can be used for 3S and 4S battery pack configurations.
This is manufactured by Heltec.

Dimensions 4.7 × 1.5 × 1.5 in