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Upgraded Active Balancer (Seplos Kits)

Following customer feedback and internal testing, Fogstar has replaced the Seplos Active Balancer with the JK Active Balancer in the Seplos DIY Kits.

The previous Seplos balancer triggered solely on cell deviation, with no voltage threshold — causing balancing across the full charge curve, including at low voltages, which often undid top-balancing.

The JK balancer retains deviation-based balancing but adds a programmable voltage threshold. This must be manually set to 3.45V to ensure balancing occurs only near the top of the charge cycle, preserving top-balance integrity and avoiding unnecessary low-voltage interference.

The JK Balancer also includes Bluetooth + app control, allowing live monitoring and parameter tuning.

Read more here;

Updated on 16 Jun 2025