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AJMRTC 4S 30A Li-ion BMS Battery Protection Board 14.4V 14.8V 16.8V, 4 Series 18650 Lithium Charging PCB Module with Cell Balance, Overcharge Over-Discharge Short Circuit Protection for Power Tools
- - Built-in passive cell balance function, keeps 4 series lithium cells balanced to extend battery service life
- - Multiple safety protections: overcharge, over-discharge, over-current, short circuit and temperature protection
- - 30A continuous current rating, works with 4S 18650 li-ion battery packs, nominal 14.8V, full charge 16.8V
- - High precision voltage detection circuit, auto recovery after fault removal for convenient use
- - Widely applied for DIY battery packs, power drills, e-bikes, energy storage and small motor equipment
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AJMRTC 4S 30A BMS protection board is specially designed for 4-series 18650 li-ion battery packs with nominal 14.8V and fully charged 16.8V. It integrates passive balance and multi-layer safety protection to guard your lithium battery against overcharging, over-discharging, overcurrent and short circuit risks. Adopted high-quality MOS tubes and precise detection chips, the PCB supports 30A continuous discharge current, stable output for power tools, e-bikes, portable power stations and DIY energy storage projects. After protection triggers, the module can automatically recover once abnormal conditions are eliminated. Easy wiring and compact size for simple battery assembly. Please note this BMS is only for 4S li-ion cells, not compatible with LiFePO4 batteries.
- Brand: AJMRTC
- Type: 4S Li-ion BMS Protection Board
- Continuous Current: 30A
- Nominal Voltage: 14.4V /14.8V
- Full Charge Voltage: 16.8V
- Applicable Cell: 4S 18650 Li-ion Battery
- Balance Function: Passive Cell Balance
- Protection: Overcharge, Over-discharge, Over-current, Short Circuit
- Overcharge Voltage per Cell: 4.25V ±0.025V
- Over-discharge Voltage per Cell: 2.50V ±0.08V
- Operating Temperature: -30 ~ +80
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Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by ThermalNest Return Policy
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