3S 4A 11.1V 18650 Polymer Lithium ion BMS
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3S 4A 11.1V 18650 Polymer Lithium ion BMS

LWS® was a factory who established in 2013, had 10 years of professional 3S 4A 11.1V 18650 Polymer Lithium ion BMS manufacturing experiences in Shenzhen. We are certified as a High-Tech enterprise and passed ISO9001. As a professional high quality 3S 4A 11.1V 18650 Polymer Lithium ion BMS manufacture, you can rest assured to buy we will offer you the best after-sale service and timely delivery.

Model:LWS-3S4A-540

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Product Description


Product Introduction

Our main products LWS® 3S 4A 11.1V 18650 Polymer Lithium ion BMS are from li-ion battery protection board BMS, polymer lithium-ion battery protection board BMS, lifepo4 battery BMS, from 1S 2S digital product battery PCM, to 3S-24S (3S 4S 5S 6S 7S 8S 9S 10S 11S 12S 13S 14S 15S 16S 17S 18S 19S 20S 21S 22S 23S 24S) power battery pack management system BMS.

Product Parameter (Specification)

LWS PCM Specifications For 11.1V(3S)Li-ion Battery Pack
Model:  LWS-3S4A-540(3S)
No. Test item Criterion
1 Voltage Charging voltage DC:8.4V  CC/CV
Single balanced voltage
2
Current Balance current for single cell
Current consumption
≤50μA
Maximal continuous charging current 4A
Maximal continuous Discharging current 4A
3 Over charge Protection(single cell)
Overcharge detection voltage
4.25V±0.025V
Over charge detection delay time 0.5—1.5S
Over charge release voltage for single cell 4.15V±0.05V
4
Over discharge protection (single cell)
Over discharge detection voltage for single cell
2.70±0.08V
Over discharge detection delay time 10mS—150mS
Over discharge release voltage for single cell 3.0±0.1V
5
Over current protection
Over current detection voltage 200±25mv
Charge Over current detection
13±3A
Detection delay time 5mS—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)
≤100mΩ
8
Temperature
Operating Temperature Range
-20~+60℃
Storage Temperature Range
-20~+85℃

Product Feature and Application

(1) High-precision voltage detection function for each cell(1) High-precision voltage detection function for each cell
(2) Overcurrent detection function
(3) The battery can be charged and discharged by the MOS
(4) Low current consumption.

Our 3S 4A 11.1V 18650 Polymer Lithium ion BMS is suitable for the following products:
Toy's battery pack, power tool, 3S battery pack, LED light backup power, 12V electronic products, Solar Street light battery pack, and other products.


Product Details

LWS 1S 3.7V 2A lithium ion BMS PCM 18650 Battery Protection Board PCB1S 5A 3.7V 18650 Lithium ion Battery BMS protects 1 lithium battery from overcharging, over-discharging, over-current, and short-circuit.2S 5A PCM for 7.4V Lithium ion Battery Packs Battery BMS is suitable for 2 series 1A-5A Li-ion and LiFePO4 battery packs.3S 4A 11.1V 18650 Polymer Lithium ion BMS connected in series from overcharging, over-discharging, overcurrent, and short-circuit.
This board is not designed for high powered tools such as portable drills and alike. This BMS protects 2 lithium batteries cells connected in series from overcharging, over-discharging, over current, and short-circuit. This board is not designed for high powered tools such as portable drills and alike.


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 four groups of batteries are 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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