Bulk Lot of 4S LiFePO4 BMS Protection Circuit Modules – 20A to 100A – BesTech Power – (x51) Units
Up for sale is a bulk lot of assorted LiFePO4 Battery Management Systems (BMS) / Protection Circuit Modules**, designed for **4S (12.8V nominal) LiFePO4 battery packs**. These are professional-grade protection boards from reputable manufacturers including Bestech Power and Electric Car Company, widely used in solar storage systems, electric vehicles, DIY battery packs, and backup power applications.
These modules provide essential protection and balancing functions to ensure safe operation and extended battery life.
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Included in This Lot
* HCX-D123 – 4S 20A BMS × 4 units* HCX-D132 – 4S 20A BMS × 20 units* HCX-D268 – 4S 35A BMS × 4 units* HCX-D131 – 4S 50A BMS × 6 units* HCX-D144 – 4S 50A BMS × 2 units* HCX-D138V1 – 4S 100A BMS × 15 units**Total Quantity: 51 BMS Modules**
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Key Features
* Designed for 4S LiFePO4 battery packs (12.8V nominal, 14.4V charging voltage)* Continuous current ratings from 20A up to 100A depending on model* Built-in passive cell balancing to maintain equal cell voltage* Overcharge protection* Over-discharge protection* Over-current protection* Short circuit protection* Automatic fault recovery* Low internal resistance for efficient operation* Wide operating temperature range suitable for demanding for:
* DIY LiFePO4 battery pack builds* Solar energy storage systems* Electric scooters, bikes, carts, and vehicles* RV, marine, and off-grid power systems* Backup power / UPS systems* Battery repair shops and resellers
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Condition
* Surplus inventory* Never installed or used* Stored indoors in proper conditions* May show minor cosmetic wear from storage* See photos for exact items included
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Important Notes
* Designed specifically for LiFePO4 batteries only* Not compatible with standard Li-ion or LiPo batteries* Requires proper installation by knowledgeable users* Sold as one bulk lot
