JKBMS 2A Active Balancer 2S8S with Built-in Bluetooth for LiFePO4 Li-ion LTO 10V40V Smart Equalizer Module(JK-B2A8S)

Description

• 2S-8S Active Balancer for Lithium Battery Packs: Designed for 2S-8S battery packs and suitable for LiFePO4, Li-ion, and LTO systems. A good fit for solar storage, RV, marine, e-bike, golf cart, and DIY battery pack projects
• 2A Active Energy Transfer Balancing: Transfers energy from higher-voltage cells to lower-voltage cells instead of simply burning off excess energy. Helps reduce cell voltage differences and improve pack consistency
• Bluetooth App Monitoring: Use the JKBMS app to view cell voltage, balancing status, and key parameters from your phone. Convenient for battery setup, maintenance, and troubleshooting
• High Precision Voltage Detection: Supports accurate cell voltage acquisition to help identify imbalance more clearly and monitor balancing performance more effectively
• Not a Charger or Battery: This active balancer is an active balancing module for lithium battery packs. It is not a battery, not a charger, and not a full BMS main control board

The JKBMS JK-B2A8S Active Balancer is a 2A battery equalizer designed for 2S-8S lithium battery packs. It is suitable for LiFePO4, Li-ion, and LTO applications where cell balancing is important for pack consistency and long-term performance.
Unlike simple passive balancing devices, this module uses active energy transfer balancing to move energy between cells. This helps reduce voltage drift within the pack and makes it especially useful for solar battery systems, RV batteries, marine batteries, backup power packs, and DIY lithium battery builds.
With Bluetooth app support, users can check cell voltage, balancing status, and settings directly from a smartphone, making pack monitoring easier during daily use, maintenance, and battery repair.

Shipping and Returns

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