4S 14.8V / 16.8V 20A Peak li-ion 4 BMS PCM Battery Protection Board Bms Pcm For lithium LicoO2 Limn2O4 18650 li Battery

Description

Applicable to the following products within the described power range:r

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.

Parameters:r

Overcharge voltage range: 4.25-4.35v ± 0.05vr

Overdischarge voltage range: 2.3-3.0V ± 0.05Vr

Upper limit working current: 10Ar

Working temperature: -40 to+50 ℃r

Maximum instantaneous current: 20Ar

Storage conditions: -40 to+80 ℃r

Static current: less than 30uAr

Effective lifespan: greater than 50000 hoursr

Internal resistance: less than 60m Ωr

Short circuit protection: can be protected, requires charging to restore.

P+P – is the input and output, and when combined, the battery voltage, capacitance, and internal resistance must be well matched. After combination, the output can only be obtained by charging with a voltage of 16.8V.

matters needing attention:r

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

2: After connecting the cable, it needs to be charged first before there will be output.r

3: Products with a discharge current of 3A or higher should have a battery discharge rate of 3C or higher. Ratio calculation formula: For a 1C rate battery, 2000 capacity equals 2AH * 1=2A upper limit working current. 3C rate battery, 2000 capacity equals 2AH * 3=6A upper limit working current. During use, the battery will heat up due to the unsuitable battery rate, which cannot be used for a long time as the battery will quickly damage.r

4: When connecting 4 groups of batteries in series, please ensure that the voltage of each group of batteries is the same. If they are not the same, please fully charge each group of batteries separately before using them in series. During the discharge test, the group of batteries with the fastest voltage drop is a poor battery.r

5: Do not mix good and poor batteries together for use! The closer the capacity/internal resistance of the 4 sets of batteries, the better! The usage effect of 2 good batteries+2 poor batteries=the usage effect of 4 poor batteries.r

6: This protective board cannot be used for lithium iron phosphate batteries, hernia lamps, hand drill battery packs, electric fishing machine battery packs, electric bicycle battery packs, children’s car batteries, motors above 775 (4A), and 1W fisheye LED lights. Customers who purchase the above combinations are advised to pay attention!

Product Customization

We support product customization services. Contact us to discuss your requirements.