BMS NMC 20S 60A JBD (HP28SA)

JBD BMS NMC 20S 60A HP28SA

The JBD HP28SA 20S 60A is a battery management and protection system intended for twenty-series NMC lithium-ion battery packs. A 20S NMC architecture is used in higher-voltage battery systems and typically sits in the 74V nominal class when built from conventional 3.7V lithium-ion cell groups. The 60A current variant places this BMS in applications that need a substantial discharge path without moving into the very highest-current traction category.

HP28SA is a Jiabaida/JBD hardware BMS family that supports multiple series counts and current variants. In a 20S configuration, the BMS monitors the voltage of each series group, controls the common charge/discharge path and provides protection logic for abnormal conditions. The platform also includes balancing and temperature-sensing provisions, helping the battery operate as a coordinated pack rather than as twenty independent cell groups.

The 60A rating should be considered as one part of the total battery design. Continuous pack current passes through cells, interconnects, busbars, cables, BMS switching devices, connectors and protection hardware. Resistance at any one of those points can create voltage drop and temperature rise. A properly designed 60A-class pack therefore needs suitable conductor cross-section, low-resistance joints, correct fuse selection and enough enclosure cooling for the expected duty cycle.

Cell balancing is useful because small voltage differences accumulate over repeated cycling. A balancing system can reduce that spread near the top of charge, but it cannot restore a cell with poor capacity or high internal resistance. Cell matching at assembly remains important. The HP28SA family uses a common-port arrangement, simplifying external wiring by sharing the negative charge and discharge path through the BMS.

Use this BMS with a 20S NMC/lithium-ion battery pack whose cell voltage profile matches the configured protection settings. Do not substitute a 20S LiFePO4 pack simply because the series count is the same; the cell chemistry and voltage limits are different. Match the charger to the 20S NMC pack and confirm the load, fuse, cable and connectors are appropriate for the intended current.

The HP28SA family exists in multiple current and interface variants, so replacement work should be matched by model, series count, current class, port architecture and harness layout. If the application requires Bluetooth, CAN or another communication interface, verify that functionality on the exact unit rather than assuming every HP28SA revision includes it.

Applications

• 20S NMC lithium-ion battery packs.

• Electric bikes, scooters, motorcycles and light EV battery systems.

• Higher-voltage portable or industrial battery modules.

• Solar, backup and custom energy-storage packs using NMC chemistry.

• Battery repair and replacement projects requiring a 20S 60A-class JBD BMS.

Installation Guide

Build and measure the full 20S stack before inserting the balance harness into the BMS. Verify every adjacent series-group voltage and confirm the cumulative pack voltage rises correctly from the first group to the twentieth. Connect the balance wires in the exact HP28SA sequence, then complete the common-port power wiring with correctly sized conductors. Insulate all exposed metal, provide strain relief, and mount the BMS away from conductive debris. Commission with controlled current while checking cell voltages and temperature before placing the pack into full service.

Why Choose Glannu Industries?

Glannu Industries focuses on lithium-battery, EV, energy-storage and battery-pack assembly components. The catalog brings together BMS boards, connectors, insulation materials, battery wiring, terminals, fuses, enclosures, testing equipment and assembly tools. For battery builders, repair workshops and OEM buyers, sourcing related components from one specialist catalog can make specification matching and procurement easier. Final suitability should still be checked against the exact battery design, equipment model and electrical requirements before installation.