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UG LAND INDIA
UG LAND INDIA 4S 30A 12.8V BMS 18650 Lithium Iron Phosphate Battery Protection Board (LiFePO4) Battery Module Over-Discharge/Over-Current
UG LAND INDIA 4S 30A 12.8V BMS 18650 Lithium Iron Phosphate Battery Protection Board (LiFePO4) Battery Module Over-Discharge/Over-Current
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Parameter | Specification |
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Brand | UG LAND INDIA |
Battery Type | LiFePO4 (Lithium Iron Phosphate, 3.2V nominal per cell) |
Number of Cells | 4 Series (4S) – Total Pack Voltage: 12.8V nominal |
Continuous Discharge Current | 30A |
Peak Discharge Current | 40A – 50A (short duration) |
Charging Voltage | 14.6V (3.65V × 4 cells) |
Overcharge Protection Voltage | ~3.75V ± 0.05V per cell |
Over-discharge Protection Voltage | ~2.0V ± 0.1V per cell |
Overcurrent Protection | Yes (Typically triggers above 40A) |
Short Circuit Protection | Yes |
Balancing Function | Yes (Passive balancing to equalize voltage between cells) |
Temperature Protection | Optional (depends on version; may require external sensor) |
Board Dimensions | Approx. 65mm × 45mm × 4mm |
Connector Type | 5-pin JST/PH connector for cell balancing (B+, B-, B1, B2, B3, B4) |
PCB Material | High-quality FR4 with thick copper traces |
Self-Consumption | <50μA (low standby power drain) |
Application | LiFePO4 battery packs for solar energy storage, e-bikes, UPS, portable systems |
Features:
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Designed for LiFePO₄ Cells
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Specifically built to manage 4-cell LiFePO₄ (3.2V nominal per cell) packs for a total nominal voltage of 12.8V.
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Supports High Discharge Current
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Handles up to 30A continuous discharge current, making it suitable for high-drain applications.
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Overcharge Protection
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Cuts off charging when any cell voltage exceeds ~3.65V to prevent overcharging and increase battery lifespan.
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Over-discharge Protection
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Prevents battery damage by disconnecting the load when any cell drops below ~2.0V.
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Overcurrent Protection
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Activates when the output current exceeds a safe threshold (typically over 60A peak), protecting your battery and circuitry.
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Short Circuit Protection
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Instant shutdown in case of output short circuit conditions to ensure safety.
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Automatic Recovery
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Restores normal operation when the fault condition (overcurrent or short circuit) is cleared — no manual reset required.
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Cell Balancing Function (if included in model)
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Automatically balances the charge between cells during charging, ensuring consistent performance and safety.
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Temperature and Self-Protection
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Some versions may include thermal cut-off or self-resetting fuse components.
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Compact & Durable PCB Design
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Lightweight, reliable, and easy to integrate into custom battery pack assemblies.
Description:
- This board is 4 string 3.2V Lithium iron phosphate battery protection board.
- Features: High current protection board, continuous 30A current, with balance circuit The board comes with cable.
- Discharge: Continuous Discharging Current: 30A(MAX); Instantaneous Discharge Current: 56A. Charge:Charging Voltage: 14.8V; Charging Current: 20A (MAX).
- Balance:Detect Voltage: 3.60±0.05V; Release Voltage: 3.59±0.05V; Balance Current: 58mA.
- Over-charge Detect: 3.75±0.05V; Over-charge Release: 3.60±0.05V; Protect Delay: 1300MS.
Discharge: Continuous Discharging Current: 30A(MAX); Instantaneous Discharge Current: 56A Charge: Charging Voltage: 14.8V; Charging Current: 20A (MAX) Balance: Detect Voltage: 3.60±0.05V; Release Voltage: 3.59±0.05V; Balance Current: 58mA Over-charge Protect: Over-charge Detect: 3.75±0.05V; Over-charge Release: 3.60±0.05V; Protect Delay: 1300MS Over-discharge Protect: Over-discharge Detect: 2.1±0.08V; Over-discharge Detect delay: 145S; Release Voltage: 2.3±0.1V Over-current Protect: Detect Voltage: 200mV; Detect Delay: 20mS; Current Detect: 56±10A Release Condition: Cut Load; Inner Resistance: ≤20mΩ Self-Consumption: Working Current: ≤30uA; Sleep Current (when Over-discharge): ≤20uA Working Temperature Range: -30+80℃ PCB Board Size: 56x47mm/2.2x1.85"
Shipping & Returns
Shipping & Returns
Return Policy According
• Order can be return within 10 days from date of delivery.
Generate (RMT) Return Merchant Ticket
• Note : Take photo and upload. Condition of product. Enter Correct Name, Mobile, Email, Order id / Invoice number (any one ) you can enter. Select Payment mode
Refund policy
Prepaid Customer
• Refund of the order will be initiated after receiving the product at the warehouse address
• You will receive a notification message or mail for confirmation, of receiving the product.
For any query, please Call/WhatsApp to our helpline number +91-9999115521/+91-9999115512





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About Shipping
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- Time of shipment:
- All of product we can shipping out within 3~5 weekday, on usually we are according to customer orders time for packing and shipment, we need to carefully check the quality of the goods before to Ship, So take some time to handled.
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- Protection time is running out: When we have finished time of shipment, if the product protection period running out, please extend the product protection period by yourself or contact us, Please kindly don't open the dispute directly.
Import duties:
Taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Import duties, taxes and charges are not included in the item price or Shipping charges. These charges are the buyer's responsibility• We committed 99% surely that we will shipped your order in same day if order is received from 4.00 pm after this time all order dispatched timely.
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