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BMS 1S 3.7V 2A/3A/4.5A/6A/7.5A/9A 18650 Li-ion Lithium Battery Charging Protection Board 1/2/3/4/5/6 Mos Lipo Power Bank Cell

$18.99 $9.90

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1. Before installing the protection board, the battery should be matched well (the voltage difference between each battery should not be 0.05V, the internal resistance difference is not more than 5mQ, the tolerance is less than 30mAh), the smaller the battery voltage difference, the better the protection board will work. .

2. The batteries are connected in parallel and then connected in series, and the welding is correct (18650 battery nickel spot welding, other batteries are soldered), do not screw, easy to burn the protection board IC.

3. If it is an old battery change board, please pay attention: Please confirm the battery is normal before buying?

4. When installing, use a multimeter to check whether the voltage of each string is the same? The performance failures with a difference of more than 1.0V are: running not far, starting and powering off, charging time is short, basically the battery core problem is more. The failure of the protection board is as follows: the battery cannot be charged, and the battery has a voltage and cannot be discharged.


Long-lasting discharge current: 2A-9A

Single-cell consumption of battery (self-consumption): ≤3uA

Charging voltage: 3.7V

Charging current: 2A-9A

Overcharge detection voltage: 3.7±0.05V

Overcharge protection delay: I S

Overcharge release voltage: 3.7±0.05V

Over-discharge detection voltage: 2.0-2.1V

Over-discharge detection delay: lO0mS

Over discharge release voltage: 2.3±2.1V

Overcurrent detection voltage: 200±25mV

Overcurrent detection delay: 10mS

Overcurrent detection current: 2A-9A

Overcurrent protection release condition: automatic recovery

Short circuit protection condition: External load short circuit

Short circuit detection delay: 250uS

Short circuit protection release condition: Disconnect load

Main circuit conduction internal resistance: ≤20mΩ

Working current: ≤20uA

Sleep current (current over discharge): ≤20uA

Working temperature: -20 ° C ~ 40 ° C

SKU: 4000298359753