Lithium Battery Charger Protection Module (BMS) 13S 50A 48V

Description

Lithium Battery Charger Protection Module ( BMS ) 13S 50A 48V This 13S 50A 48V Lithium Battery Protection Module (BMS) is an unbranded, PCB-mount protection and balancing board engineered for 13-cell series lithium battery packs. It provides the essential safety features for pack operation — over-charge, over-discharge, over-current and short-circuit protection — together with passive cell balancing. The module is compact, intended for DIY battery builds, e-bike packs and other 48-V systems, and is supplied with a multi-pin balance harness and a connection diagram for straightforward wiring and installation. Features Designed for 13 cells in series (13S) for nominal pack voltage ≈48V. Continuous discharge rating of 50A for sustained load handling. Integrated passive cell balancing to equalize cell voltages and extend pack life. Standard protection suite: over-charge cutoff, over-discharge cutoff, over-current / short-circuit protection, and temperature monitoring support. Supplied with 13-cell balance-lead harness and a wiring/connection diagram for easy installation. Compact, unbranded PCB design suitable for retrofit or custom pack assembly. Low standby current to minimize idle drain on the pack. PINOUT Specifications Parameter Value Supported Pack Configuration 13S (13 cells in series) Nominal Pack Voltage ≈48V Continuous Discharge Current 50A Peak Current Capability Higher short-term/peak currents possible Protection Functions Over-charge, over-discharge, over-current, short-circuit, temperature, cell balancing Balancing Type Passive balancing (balance-lead required) Included Harness 13-cell balance lead harness (multi-pin) Board Type Unbranded PCB protection board, through-hole and SMT components Recommended Full Charge Voltage Approx. 54.6V (4.2V per cell) — set charger/charger-BMS accordingly Applications Protection and balancing for 13S lithium-ion battery packs in e-bikes, scooters and small EVs. Battery management for DIY power-wall and portable energy storage systems. Safeguard and balancing board for 48-V tool packs, electric cargo bikes and similar high-power applications. Use as a compact protection layer for custom 13-cell 18650/21700 pack assemblies. Package Contents 1× Lithium Battery Charger Protection Module (BMS) 13S 50A 48V. 1× 14-pin connector with 30cm wire terminals.

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