BMS Active Balancer 2S–8S 1.2A | LiFePO4 LTO Battery Board
BMS Active Balancer 2S–8S 1.2A | LiFePO4 LTO Battery Board
BMS 2S–8S 1.2A Active Balance Board – LiFePO4 & LTO Lithium Battery Energy Transfer Equalizer
Keep your lithium battery pack running at peak efficiency with this Active Balance Board Equalizer. Compatible with 2S through 8S configurations (including 3S, 4S, 5S, 6S, 7S, and 8S), this module uses active energy transfer balancing — moving charge between cells rather than wasting it as heat — so every cell in your pack stays evenly matched for maximum capacity, longevity, and performance.
Whether you're building a DIY power wall, an e-bike battery, a solar energy storage system, or a custom RC pack, this compact BMS balancer board is the smart, efficient solution for LiFePO4 and LTO lithium chemistries.
Made in Mainland China.
Key Features
- Wide Compatibility: Supports 2S, 3S, 4S, 5S, 6S, 7S, and 8S lithium battery configurations
- Active Balancing Technology: 1.2A energy transfer balancing — more efficient than passive (resistive) methods
- Compatible Chemistries: LiFePO4 (lithium iron phosphate) and LTO (lithium titanate) battery types
- Operating Voltage: 2V – 4.5V per cell supply range
- SMD Module Package: Compact, surface-mount design for easy integration into battery builds
- New Condition: Ships brand new, ready to install
- Quantity: 1 module per order
What Is Active Balancing?
Unlike passive balancers that burn off excess cell energy as heat, an active balancer transfers energy from higher-charged cells to lower-charged cells. This results in:
- Less wasted energy during balancing cycles
- More usable capacity from your entire battery pack
- Extended overall battery lifespan
- Cooler, safer operation compared to passive dissipation
Typical Applications
- DIY home energy storage / power walls
- Electric bikes, scooters, and e-vehicles
- Solar off-grid battery systems
- RC vehicles and drones
- Portable power stations
- Custom lithium battery packs
Specifications
| Balancing Current | 1.2A |
| Compatible Cell Count | 2S, 3S, 4S, 5S, 6S, 7S, 8S |
| Battery Chemistry | LiFePO4, LTO |
| Supply Voltage Range | 2V – 4.5V per cell |
| Package Type | SMD Module |
| Condition | New |
| Quantity | 1 piece |
| Origin | Mainland China |
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Frequently Asked Questions
Q: What battery chemistries is this active balance board compatible with?
A: This BMS active balancer is designed specifically for LiFePO4 (lithium iron phosphate) and LTO (lithium titanate) battery cells. It is NOT intended for standard Li-ion or LiPo cells, which operate at different voltage ranges.
Q: What cell configurations (S counts) does this board support?
A: The board supports 2S through 8S configurations — meaning packs of 2, 3, 4, 5, 6, 7, or 8 cells in series. This makes it highly versatile for a wide range of DIY battery build projects.
Q: What is the difference between active and passive battery balancing?
A: Passive balancing dissipates excess energy from higher-charged cells as heat via resistors — simple but wasteful. Active balancing, as used in this board, transfers that energy at up to 1.2A to lower-charged cells, making the process far more efficient and reducing heat generation during balancing cycles.
Q: Is one module enough for my battery pack?
A: Each order includes 1 active balance board module. For most single battery pack builds up to 8S, one module is sufficient. For larger or parallel configurations, additional modules may be needed depending on your design.