China suppliers green 18650 lithium ion 7.4V 2S 3A bms pcm for battery pack li-ion
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China suppliers green 18650 lithium ion 7.4V 2S 3A bms pcm for battery pack li-ion

LWS® 18650 lithium-ion 7.4V 2S 3A BMS is an advanced and reliable battery management system, ensuring safety and optimal performance for 2-cell lithium-ion battery packs used in various applications. With over 10 years of expertise in hardware and software design, LWS® offers high-quality solutions, including customized battery packs and smart chargers, complying with CE, UL, and other certifications. Trustworthy and efficient, LWS® is a leading industry choice for battery management needs.

Model:LWS-2S3A-134

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Product Description


Product Introduction

LWS® battery protection board 2S 3A Lithium ion Battery BMS For 18650 Charger
Is for nominal voltage 3.6V 3.7V lithium battery(Including 18650,26650, lithium polymer batteries). You are welcomed to come to LWS to buy the latest selling, low price, and high-quality 2S 3A Lithium ion Battery BMS For 18650 Charger. We look forward to cooperating with you.


Product Parameter (Specification)


Shenzhen Li-ion Battery Bodyguard Technology Co.,LTD
PCM Specifications  For LWS® 7.4V (2S) Li-ion Battery Packs
No. Test item Criterion
1 Voltage Charging voltage DC:8.4V  CC/CV
Balance voltage for single cell     /
2
Current Balance current for single cell     /
Current consumption
Max:20μA
Maximal continuous charging current 4A
Maximal continuous Discharging current 4A
3 Over charge Protection(single cell)
Overcharge detection voltage for single cell
4.25V±0.025V
Over charge detection delay time 0.5—1.5S
Over charge release voltage for single cell 4.05±0.05V
4
Over discharge protection (single cell)
Over discharge detection voltage for single cell
2.80V±0.08V
Over discharge detection delay time 50mS—150mS

Over discharge release voltage for single cell

5
Over current protection
Over current detection voltage 200±15mv
Charge Over current detection
8±1A
Detection delay time 5—15mS
Release condition Cut load
6

Short protection
Detection condition
Exterior short circuit
Detection delay time 200—500uS
Release condition Cut load
7
Resistance Protection  circuitry(MOSFET)
≤50mΩ
8
Temperature
Operating Temperature Range
-40~+85℃
Storage Temperature Range
-40~+125℃

Product Feature and Application

Our LWS® has a proven track record in the industry, with extensive experience in developing battery protection boards and other related solutions. The 7.4V 2S 3A BMS is no exception, showcasing the brand's commitment to delivering top-tier products that meet high-quality standards.

Product Details

LWS® 2S 3A Lithium ion Battery For Electrical Tool UPS BMS
The circuit board is made with high quality electronic components, stable and reliable, suitable for 2 series 3.7V 18650 Li-ion cell.


Notes

1) Wire connection strictly according to the drawing, do not intentionally short circuit.
2) Before charged, need to connect the cables first.
3) When the group of battery is connected in series, ensure that the voltage of each group of batteries voltage is the same. If not, fill each group of batteries separately before connecting them in series. In discharge tests, the group of cells with the fastest voltage drop is the differential cell.


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