smart BMS 4S 120A Lifepo4 battery management system(BMS) 12V with bluetooth module

Supplier: Shenzhen E-Fire Technology Development Co., Limited
Region: Guangdong, China
Contact: Ms Little Bear
Price: $66.00 / >=10 pieces
Min. Order: 10 pieces

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Product details

Min. Line Spacing:	n/a;	Place of Origin:	Guangdong China;
with balance:	yes;	Packaging Detail:	safe carton pack;
Single package size:	15X10.2X2 cm;	MOQ:	10 pieces;
Base Material:	glass fiber;	Common port:	Yes;
Model Number:	LFP-412120;	size:	15010220mm;
Copper Thickness:	n/a;	Selling Units:	Single item;
UART communication:	yes;	Application:	solar system;
Brand Name:	CLRD;	discharge current:	60A 80A120A;
Board Thickness:	20mm;	Min. Hole Size:	n/a;
Surface Finishing:	n/a;	Min. Line Width:	n/a;
Single gross weight:	0.4 KG;	temperature sensor:	yes;

What Bluetooth Communication Module can do ?

With Bluetooth Communication Module , the APP Software can be connected , and all information of the BMS can display on your Mobile Phone . and you can set some parameters on Your APP software :Over-protection voltage , Over-discharge protection voltage ,Rlease voltage of over-charge and discharge

Adjustable BMS can set up Voltage and Current

You could get the SOC, RM, RSOC, Voltage, Current, Temperature of battery pack through UART connect

Please contact with us for more information

bluetooth module is 6USD per pcs ,UART tool box is 8USD per pcs

Specification

Discharge current	60A	80A	100A	120A
Over discharge current protection	70A	90A	110A	130A
MOSFET	≤10mΩ	≤10mΩ	≤10mΩ	≤10mΩ
Charge current	40A	60A	80A	100A
Charging Voltage	14.4V	14.4	14.4V	14.4V

Over charge protection	Balance Voltage
Dection Voltage: 3.75±0.03V	Dection Voltage:≥3.4V
Detection Delay Time:1000mS	Release Voltage:<3.4V
Release Voltage:3.6±0.025V	Balance Current: 50~60mA

Over Discharge Voltage Protection	Over Discharge Current Protection
Dection Voltage: 2.7±0.1V	Dection Voltage:150mV
Detection Delay Time:1000mS	Detection Delay Time:5mS
Release Voltage:2.8±0.1V	Release Condition: Disconnect load/Charge activation

Pictures

This price is not including UART tool box ,if you need ,please feel free to contact with us to revise the price for you !

Warning :

1,Should strictly follow the connection step as the diagram.

2,Double check the connection is correct,then connect it to the battery pack "+","-" Pin.

3,We are not responsible for the defectives caused by wrong connection.

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FAQ

1.What is the common port and separate port? what is the difference?

We take 13S48V15A BMS as an example, common port 15A means your charge cathode and discharge cathode are connected in the same point end(our P-), charge cathode and discharge cathode are used in the common connection

port, so the charge current and discharge current are the same 15A. while the separate port is separately connected by charge cathode (C-) and discharge cathode (P-), so the charge current and discharge current are different, discharge current 16A, charge current 8A.

2.What is the balance function?

The working principle and function are as followings, when your one cell voltage is upto alarm voltage(Li-ion upto 4.18V, Life Po4 upto (3.6V), then the cell Balance starts to work, balance resistance starts discharge with 35ma(when balance discharge starts to work, BMS will starts a little heat up, which is the normal reflection), the cell is in both charging and discharging status, and others which are not reached to alarm voltage(Li-ion 4.18V, Life Po43.6V)are only in charging status, no discharging, when the fast cell voltage is reached to alarm voltage(Li-ion 4.25V, Life Po43.75V)BMS starts off power protection, all the other cells

are all in stop of charging, this process will enable your battery charging in balance current, and your battery voltage are in balance status, but when your cell voltage difference are in a big range, then balance can not be functionning.

well

3.The relationship between Battery capacity and BMS current?

There is no direct relationship between Battery capacity and BMS current, big capacity doesn`t mean a big battery, but rely on continue current, that is to say if your engine is powerful, your should choose high current of BMS, it is not relied on battery capacity.

4. What type of charger should I choose?

Lithium battery must choose specific charger, do not use Charger for Leadacid battery, for leadacid charger may have MOS with high pressure breakdown protection, which will not protect of BMS over charge.Life Po4 battery charger voltage=battery string No.X3.6V, while Li-ion battery charger voltage=Battery string No.X4.2V.

5. What current BMS should I choose ?

Take 10S36V as an example: what current BMS you choose is relied on your E-bicycle Motor power and current limitation of controller. eg., choose 16A for below 350W, 25A for below500W, 35A for below 800W, 60A for Below 1000W, higher than 1200W are contact with our service specialist for suggestions, one inall, continue current shall be higher than current limitation in Controller.

6. Whether my BMS damaged?

if you want to judge if the BMS is damaged, please take the folowing steps, to test if each cell voltage is the same with voltmeter? if the cell voltage difference is over 1.0V, the fault is displayed that it cannot run far, no power supply at the

start range, short charge time, all these issues are almost caused by battery cells, if BMS damaged is displyed as no charge, no discharge, no discharge while the battery has voltage.