5A Active Battery Equalizer Balancer Board 3S 4S 6S 8S BMS
5A Active Battery Equalizer Balancer Board 3S 4S 6S 8S BMS
LOTHYE 5A Active Battery Equalizer Balancer Board – 3S / 4S / 6S / 8S
Keep your lithium battery pack running at peak efficiency with the LOTHYE Active Equalizer Balancer Board. Using advanced capacitive charge-transfer technology, this BMS balancer board automatically redistributes energy between cells, extending overall pack life and maintaining consistent cell voltages across 3S, 4S, 6S, and 8S configurations.
Compatible with Li-ion, LiPo, LiFePO4, and LTO (Lithium Titanate) chemistries — all within a working voltage range of 1.8V to 4.5V. Ideal for battery packs between 60–300 Ah capacity.
Key Features
- Active Capacitive Balancing: Transfers charge carriers between cells for smooth, efficient equalization — no energy wasted as heat.
- High Equalization Current: Up to 5.5A balancing current (current scales with cell count for optimal efficiency).
- Ultra-Low Internal Resistance MOSFETs: Premium new-generation MOS components paired with 2OZ copper-thickness PCB for minimal losses.
- Precise Voltage Accuracy: Balance voltage accuracy within ±5mV for tightly matched cell voltages.
- Under-Voltage Sleep Protection: Automatically enters sleep mode when any cell drops below 3.0V; standby current <0.1mA to protect your pack.
- Dormant Switch Wiring Position: Reserved wiring position for a sleep/shutdown switch for added flexibility.
- Low Quiescent Current: ~12mA operating current — minimal drain on your battery system.
- CE Certified: Meets CE safety and compliance standards.
- Made in China.
Technical Specifications
| Compatible Configurations | 3S, 4S, 6S, 8S |
| Compatible Chemistries | Li-ion, LiPo, LiFePO4, LTO |
| Working Voltage | 1.8V – 4.5V |
| Max Equalization Current | 0 – 5.5A |
| Balance Voltage Accuracy | Within ±5mV |
| Quiescent Current | ~12mA |
| Sleep Mode Standby Current | <0.1mA |
| Under-Voltage Sleep Threshold | 3.0V |
| Recommended Battery Capacity | 60 – 300Ah |
| PCB Copper Thickness | 2OZ |
| Certification | CE |
| Battery / Charger Included | No |
Great Pairings for Your Electronics Projects
If you enjoy DIY electronics builds, you may also like:
- Electromagnetic Induction Tester – Coil & Circuit Fault Detector
- Air Compressor Pressure Gauge 0-10/0-12/0-25 Bar | DIY Tool
Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Which battery chemistries is this active equalizer balancer board compatible with?
A: This LOTHYE active balancer board is compatible with Li-ion, LiPo (Lithium Polymer), LiFePO4 (Lithium Iron Phosphate), and LTO (Lithium Titanate) battery chemistries, as long as the working voltage is within the 1.8V–4.5V per-cell range.
Q: What cell configurations (S ratings) does this BMS balancer support?
A: This board supports 3S, 4S, 6S, and 8S battery pack configurations, making it versatile for a wide range of DIY energy storage, electric vehicle, and solar applications.
Q: What is the maximum equalization current and what battery capacity is recommended?
A: The maximum equalization current is 5.5A, though the actual current adjusts automatically based on the number of cells — the more cells in the pack, the lower the equalization current per cell. The manufacturer recommends using this balancer with battery packs between 60Ah and 300Ah for best results.
Q: Does the board have any protection features?
A: Yes. The balancer board includes under-voltage sleep protection — it automatically enters sleep mode when cell voltage drops below 3.0V, reducing standby power consumption to less than 0.1mA. A dormant switch wiring position is also reserved for manual sleep/shutdown control.