Only 2 left in stock

4S 30A 14.8V Li-ion Lithium 18650 Battery BMS


4S 30A 14.8V Li-ion Lithium 18650 Battery BMS for lithium-ion batteries in a 4-series configuration with overcharge, over-discharge, and short circuit protection.

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SKU: 10002977
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Only 2 left in stock


4S 30A 14.8V Li-ion Lithium 18650 Battery BMS Packs PCB Protection Board Balance (10002977)

The 4S 30A 14.8V Li-ion Lithium 18650 Battery BMS is a Battery Management System designed for use with lithium-ion batteries in a 4-series configuration. It provides protection against overcharging, over-discharging, and short circuiting.


Details Specification
Continuous discharge current 30(MAX)A
Instantaneous discharge current 70A
Charging voltage
Charging current 30(MAX)A
Overcharge detection voltage 4.28±0.05V
Overcharge protection delay 0.1S
Overcharge release voltage 4.08±0.01V
Battery balance detection voltage 4.2±0.025V
Battery balance release voltage 4.2±0.05V
Electricity balance current 60±5mA
Over discharge detection voltage 2.55±0.08V
Over discharge detection delay 0.1S
Over discharge release voltage 3.0±0.1V
Overcurrent detection voltage 150mV
Overcurrent detection delay 9mS
Overcurrent protection current 75±5A
Overcurrent protection release condition Disconnect load
Short circuit protection condition External load short circuit
Short circuit detection delay 250uS
Short circuit protection release condition Disconnect the load switch
Temperature protection /
Main circuit conduction internal resistance ≤15mΩ
Working current
Sleep current (when the battery is over-discharged) ≤10uA
Operating temperature
Size 45x56mm

Main function:
Over charge protection, over discharge protection function, short circuit protection
function, over current protection function, band balance.

Interface definition:
Charging port of the plate and the discharge port is the same, both positive and B- connecting
battery”-“, P- charging port and port on the negative electrode;
B-, N-, P- pads are all over the hole, the hole diameter of the pad is 3.5mm;
The battery charging detection interface with DC output in the form of needle. Do the same mouth
when the N- is not wiring.

Package Contents:
1 x 4S 30A 14.8V Li-ion Lithium 18650 Battery Protection board

This is  New Version: MOS ultra-low internal resistance, alloy resistance is greater, and overcurrent capability is more enhanced.

Additional information

Weight 0.1 kg
Dimensions 10 × 5 × 3 cm

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