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Build a 12V LiFePO4 battery pack with the 4S 100A Battery Protection Circuit Board, designed for four lithium iron phosphate cells connected in series.
This battery management system is listed for a 4S configuration using 3.2V nominal LiFePO4 cells, creating a 12.8V nominal battery pack. The product listing specifies a 100A continuous discharge rating and protection functions for overcharging, over-discharging, overcurrent and short circuits.
The BMS is intended for battery-pack protection in suitable 4-cell LiFePO4 applications. Before installation, confirm the board's exact charging-current rating, wiring arrangement, cell-voltage thresholds and physical dimensions against the supplied product documentation.
4S battery configuration: Designed for a four-cell series LiFePO4 battery pack.
12.8V nominal battery voltage: Based on four 3.2V nominal LiFePO4 cells.
100A continuous discharge rating: As stated in the matching product listing.
Battery protection: Listed overcharge, over-discharge, overcurrent and short-circuit protection.
LiFePO4 chemistry: Intended for lithium iron phosphate cells.
Battery pack integration: Suitable for appropriately configured 4S battery projects.
| Specification | Confirmed listing data |
|---|---|
| Product type | Battery Management System (BMS) |
| Battery configuration | 4S |
| Battery chemistry | LiFePO4 / LFP |
| Cell nominal voltage | 3.2V |
| Pack nominal voltage | 12.8V (marketed as 12V) |
| Continuous discharge current | 100A |
| Protection functions | Overcharge, over-discharge, overcurrent, short circuit |
Potential applications for a correctly matched 4S LiFePO4 BMS include:
12.8V LiFePO4 battery pack projects
Solar energy storage battery packs
Off-grid battery systems
Backup power battery projects
DIY lithium battery pack builds
Important: These are application categories, not a guarantee that the board is suitable for every solar system, vehicle or battery pack. Verify the system's current demand, cell specifications and BMS wiring before use.
Use only with a compatible 4S LiFePO4 battery pack.
Confirm the battery cell order and BMS connection diagram before wiring.
Check positive and negative polarity carefully.
Do not assume the 100A discharge rating is also the charging-current rating.
Use suitable conductors, insulation and protection for the actual system current.
Do not connect the board to a different lithium chemistry based only on its 4S configuration.
Installation should be performed by someone familiar with lithium battery systems.
Explore battery components for your project:
These links are related battery products. They are not confirmed compatible with this LiFePO4 BMS. Match battery chemistry and pack configuration before purchasing.