4S 14.8V 18650 Lithium Polymer Battery Protection Board 16.8V Anti Overcharging and Discharging 12A Current LimitingItem NO.: 4S12A

4S 14.8V 18650 Lithium Polymer Battery Protection Board

Product Description:

Attention: This protective board cannot be used for lithium iron phosphate batteries, hernia lamps, flashlight battery packs, electric fish machine battery packs, electric bicycle battery packs, children's car batteries, 775 (4A) or above motors, and 1W fish eye LED lights. Customers who purchase the above combination should pay attention!.

The described power range is applicable to the following products: low-power inverters, massager battery packs, LED light backup power supplies, electronic products, solar street light battery packs, monitoring backup power supplies, and other products.

Attention: For products with a discharge current above 3A, the battery discharge rate should be above 3C. Formula for multiplying rate calculation: For a 1C multiplying rate battery, the 2000 capacity is equal to 2AH * 1=2A upper limit working current. 3C rate battery, with a capacity of 2000 equal to 2AH * 3=6A upper limit working current. If the battery heats up during use, it means that the battery rate is not suitable. This situation cannot be used for a long time, and the battery will be damaged quickly.

Attention 1: Strictly follow the diagram to wire 0V (B -), 3.7V (B1), 7.4V (B2), 11.1V (B3), 14.8V (B+), and do not intentionally short-circuit!

Note 2: After connecting the wires, it is necessary to charge first before there is an output. Note 3: When connecting four sets of batteries in series, please ensure that the voltage of each set of batteries is the same. If different, please fully charge each set of batteries separately before using them in series. During the discharge test, the battery with a fast voltage drop is considered a poor battery. Explanation: Do not mix good batteries with poor batteries! The closer the capacity/internal resistance of 4 sets of batteries, the better! (The usage effect of 2 good batteries+2 poor batteries=the usage effect of 4 poor batteries).

The properties of the lithium battery protection board:

Model: Long HX-4S-A01

Long size: 72 * 17 * 3.0mm

Overcharge voltage range: 4.25-4.35v ± 0

Overdischarge voltage range: 2.3-3.0v ± 0.05v

Upper limit working current: 6-8A Working temperature: -40---+50 ℃

Upper limit instantaneous current: 12A Storage conditions: -40--+80 ℃

Quiescent current: less than 30uA

Effective life: greater than 50000 hours

Internal resistance: less than 100m Ω

Short circuit protection: Protectable, requires charging to restore charging voltage: 16.8V-17V