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Know before you buy
-
4S LiFePO4 only
For 12.8V packs of four LiFePO4 cells in series.
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18–20A charge and discharge
Keep your load and charger within this rating.
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4-in-1 protection
Overcharge, over-discharge, short circuit and overcurrent.
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Thermal cut-off
Shuts down at 65°C and resumes at 45°C.
Features that make it useful
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50mA passive balancing
Keeps cells equal to prevent capacity drift.
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Auto-recovery
Resets itself after a fault clears. No manual reset needed.
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Solar, e-bike and backup packs
DIY solar storage, e-bikes, power tools and backup batteries.
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1-year warranty
amiciKart customer support.
How to use
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Check your pack
Confirm it's a 4S LiFePO4 pack (12.8V).
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Connect the balance leads in order
Wire each balance lead to its cell in the order marked on the board. Check with a multimeter before plugging in.
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Connect the main leads
Connect the battery and load/charger leads as marked, keeping current within 18–20A.
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Test
Check the output voltage before connecting your device.
4S 12V LiFePO4 BMS 20A with Balancing
amiciKart · 4S LiFePO4 (12.8V) · 18–20A charge/discharge · 50mA passive balancing · 65°C thermal cut-off · auto-recovery
A battery management system (BMS) for 4-cell LiFePO4 packs (12.8V). It supports 18–20A charge and discharge current and protects against overcharge, over-discharge, short circuit and overcurrent with millisecond-level response. Built-in ...
Sale price
Rs. 439.00
-57%
Regular price
Rs. 1,000.00
(MRP Inclusive of All Taxes)
Regular price
Rs. 439.00
Unit price
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12V 4S 20A LiFePO4 BMS with Balance Overcharge, Over-Discharge, Short-Circuit & Overcurrent Protection
Sale price
Rs. 439.00
Regular price
Rs. 1,000.00
(MRP Inclusive of All Taxes)
Regular price
Rs. 439.00
Unit price
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Specifications
| Brand | amiciKart |
|---|---|
| SKU | 1xBAT-4S-20A |
| Type | LiFePO4 battery management system |
| Cell configuration | 4S (12.8V) |
| Charge/discharge current | 18–20A |
| Balancing | 50mA passive |
| Protection | Overcharge, over-discharge, short circuit, overcurrent |
| Thermal protection | Off at 65°C, resumes at 45°C |
| Recovery | Automatic |
| Warranty | 1 year |
Frequently asked questions
Can I use it with Li-ion cells?
No. It is designed for 4S LiFePO4 packs (12.8V).
What current can it handle?
18–20A charge and discharge.
What happens if it gets too hot?
It shuts down at 65°C and resumes automatically at 45°C.
Full Product Description
4S 12V LiFePO4 BMS 20A with Balancing
A battery management system (BMS) for 4-cell LiFePO4 packs (12.8V). It supports 18–20A charge and discharge current and protects against overcharge, over-discharge, short circuit and overcurrent with millisecond-level response. Built-in 50mA passive balancing keeps the four cells equal, thermal protection shuts down at 65°C and resumes at 45°C, and it recovers automatically once a fault clears. 1-year warranty.
- 50mA passive balancing: Keeps cells equal to prevent capacity drift.
- Auto-recovery: Resets itself after a fault clears. No manual reset needed.
- Solar, e-bike and backup packs: DIY solar storage, e-bikes, power tools and backup batteries.
- 1-year warranty: amiciKart customer support.
Important: Wrong wiring order can damage the BMS and the cells. Connect the balance leads in the order marked, and check each wire first.