ANT Smart BMS Battery Protection Board 21S-30S 170A-420A, 72V-130V LiFePO4/Li-ion/LTO Packs ANRAN S1 Pro Review The total positive pole of

The total positive pole of the battery is connected to the charger and the positive pole of the battery

the front-mounted fan provides instant breeze using sunlight—no batteries required

Designed for diverse power needs

A layered internal layout highlights the control board

with 4G network connectivity

ANT Smart BMS Battery Protection Board 21S-30S 170A-420A, 72V-130V LiFePO4/Li-ion/LTO Packs ANRAN S1 Pro Review The total positive pole ofOverview ANT Smart BMS battery protection board for 21S 30S battery packs, for Li ion, LiFePO4, and LTO chemistries. Available current ratings include 170A, 230A 220A, 380A, 400A, and 420A, with peak discharge capability depending on the version. Built in Bluetooth supports Android and iOS monitoring. Key Features Battery strings: 30S (product family marked for 20S 30S on the specification sheet) Power supply mode: self powered by the battery pack;