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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