# BMS module with balance, 3.2V, LiFePo4, 3S, settable 4S, 5S, 9.6V, 100A

> BMS module with balance for LiFePo4 batteries, 3.2V, factory set to 3S, configurable to 4S or 5S via bridges on the B1 and B2 pads. Nominal current 100A, continuous discharge 50A in Split mode or 40A in Same Port mode. Provides overcharge, overdischarge protection and NTC connection for temperature protection. No short-circuit protection. Dimensions 62 x 42 x 4mm.

- Page: https://sigmanortec.ro/en/bms-module-with-balance-32v-lifepo4-3s-settable-4s-5s-96v-100a
- Price: 24.93 RON
- Availability: In stock; 1-2 zile
- Reference: 9451 · EAN: 5944479345666
- Category: Electronic components > Modules for Batteries > BMS Boards
- Specifications: Technology: LiFePo4; Load voltage: 10.8VDC, 14.4VDC, 18.0VDC; sway: Yes; Number of cells: 5S, 3S, 4S
- Package (shipping data): 0.015 kg
- Updated: 2026-09-23
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 05:45 (Europe/Bucharest)

## Description

Provides protection and balance for LiFePO4 packs, 3S from the factory, quickly configurable to 4S or 5S via bridges on pads B1 and B2. Supports high currents up to 100A, with continuous discharge 50A in Split mode or 40A in Same Port, includes overcharge and overdischarge protections, and allows the connection of an NTC for excessive temperature protection.
BMS module, adjustable between 3S and 5S, factory set to 3S, for lithium batteries with a nominal voltage of 3.2V and maximum charging voltage of 3.6-3.8V per cell.
The module offers the possibility to add an NTC thermistor for the excessive temperature protection function.
The board can be used in two configurations, Split and Same Port (see the picture below for the two configurations). In Split mode, a higher continuous discharge current is supported compared to Same Port mode.
Setting the module in a different configuration than the one in the factory (3S) is done by a bridge between the B1 and B2 pads. In the 5S configuration, there are no links between the forests. In the 4S configuration, there is only one bridge in B1. In the 3S configuration, there is a bridge in B1 and B2. The bridge can also be made with an SMD resistor with a value of 0Ω.
Specifications in the factory configuration:
Nominal voltage: 9.6VDC
Number of cells: 3
Charging voltage: 10.8VDC
Charging voltage protection: 3.61 - 3.69VDC
Load protection delay: 500 - 1500mS
Discharge voltage protection: 2.27 - 2.43VDC
Discharge recovery voltage: 2.45 - 2.65VDC
Recovery protection delay: 500 - 1500mS
Discharge current protection: 100A
Discharge current protection delay: 100 - 300mS
Nominal continuous discharge current Split mode: 50A
Nominal continuous discharge current Same Port mode: 40A
Continuous charging current: 40A
Current load protection delay: 10 -30mS
Quiescent current: 17uA
Temperature protection: Yes, it has an NTC probe interface
Disconnection protection: Yes
Short circuit protection: NO
Excessive current recovery mode: load disconnection
Balance function: Yes
Equalization voltage: 3.355 - 3.455VDC
Cell equalization current: 60mA
Working temperature: -20°C - +65°C
Storage temperature: -40°C - +85°C
Dimensions mm: 62 x 42 x 4mm
Configuration change instructions:
5S: B1 and B2 free, forests highlighted in the photo ( Hanginf Short) free.
4S: B1 in short, hanging short pad from left to short, right free.
3S: B1 and B2 in short, pad Hanging Short from right in short, left free