4S 4Amp 18650 Lithium Battery Charger Protection Board (10002979)
Lithium battery protection board attributes:
Dimensions: 48 * 15 * 1.0mm
Charging voltage range: 4.25-4.35v±0.05v
Over-discharge voltage range: 2.3-3.0v ± 0.05v
Working temperature: -40 --- + 50 c
Storage conditions: -40-- + 80 c
Maximum operating current: 4-5A
The maximum instantaneous current: 6-7A
Quiescent Current: less than 6uA
Resistance: less than 45mΩ
Effective life: more than 50,000 hours
Short circuit protection: protect, need to be recharged recovery
Suitable for: 4packs 18650 lithium battery 14.8V 16.8V
Main functions and features: over charge protection, over-discharge protection,
short circuit protection, over current protection.
1) high-accuracy voltage detection circuit;
2) terminal of the charger using high voltage devices;
3) Built-in three-stage overcurrent detection circuit (overcurrent 1, overcurrent 2, load short circuit);
4) MOS transistor can be controlled by a battery charge and discharge;
5) low standby current consumption.
Function and Notice:
1, the lithium battery with protection board according to the wiring diagram connection,
when the battery voltage is overcharge and over-discharge voltage between the voltage,
and P +, P- charging 1 second, P + and P- output voltage of the battery voltage.
2, the battery charge function: between P + and P- plus charger to charge the battery,
the battery voltage charge to overcharge detection voltage (4.25 ±0.025V),
the protection circuit to cut off the charging path, to achieve overcharge protection.
3, Battery over-discharge protection: in between the P + and P- connected load to the battery discharge
when the battery voltage drops to over-discharge voltage (2.7 0.05V), the protection circuit,
shut off the discharge path to achieve the over-discharge protection.
4, Short circuit protection: When the P + and P- short circuit protection circuit will act quickly in 5-50uS,
cut off access, short-circuit protection.
5, Over current protection function: When the V- terminal voltage of (0.15 ± 0.02V),
the protection circuit will act quickly in 6.7-13.9ms, cut off access, overcurrent protection.
1PC 4S 4A-5A 18650 Li-ion Lithium Battery Protection Board