Description
The HP07SA 7S 20A BMS is a reliable and compact battery management system designed specifically for 7-series (7S) lithium-ion/NMC battery packs. With a nominal voltage of approximately 25.9 V and a maximum fully charged voltage of 29.4 V, this BMS ensures safe, efficient, and long-lasting operation of your battery packs. It supports a continuous charge and discharge current of 20 A, making it ideal for moderate-power applications in portable devices, DIY battery builds, and light electric vehicles.
The board provides a comprehensive suite of protection features to safeguard both the battery pack and the connected load. These include cell over-voltage protection to prevent overcharging, under-voltage protection to avoid over-discharging, over-current and short-circuit protection, and temperature monitoring to ensure safe operation under varying environmental conditions. This multi-level protection helps prevent accidents, extend battery lifespan, and maintain performance over time.
In addition, the HP07SA BMS incorporates passive cell balancing, which equalizes the voltage levels of all 7 cells in series. This not only improves battery efficiency but also enhances the overall life of the pack by preventing weaker cells from being overcharged or over-discharged. The system is engineered to handle small to medium-scale energy storage applications, including portable power stations, backup power solutions, DIY energy packs, and light electric vehicles such as e-bikes and scooters.
The compact, lightweight design allows for easy integration into tight spaces, making it a versatile solution for custom battery projects. The board is built for durability, reliability, and safety, ensuring your lithium-ion or NMC cells operate optimally under daily use.
Key Features
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Supports 7S (7 cells in series) lithium-ion/NMC battery packs
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20 A continuous charge and discharge current
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Passive cell balancing to maintain voltage uniformity across cells
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Protection features: overcharge, over-discharge, overcurrent, short-circuit, temperature monitoring
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Common charge and discharge port for simplified wiring
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Compact and lightweight hardware board for easy integration
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Ideal for DIY battery builds, e-mobility, portable power stations, and small energy storage systems
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Extends battery lifespan by maintaining safe and balanced cell voltages
Applications
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Portable power stations and backup battery packs using 7S lithium-ion/NMC configuration
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Light electric vehicles such as e-bikes, scooters, and small electric mobility devices
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DIY battery builds for hobbyists or custom projects
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Small off-grid or solar energy storage systems
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Tools, electronics, and devices requiring 7S lithium-ion packs with reliable protection
