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smart 3S 4S 12V 20A 30A 35A li ion lifepo4 bms with communication
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Meorient Import & Export Co.LTD
China - Hangzhou
Trading Company
Trade Capacity
Export Percentage
Nearest Port
Hangzhou,Shanghai
Accepted Delivery Terms
Employees
5-10人
Accepted Payment Currency
USD,CNY
Average Lead Time
45 Day(s)
Certifications
Product Specifications
--Product Description
Product Description
If you buy our smart bms, we will offer you free software to download for cell phone and PC
What BT Communication Module can do? With BT Communication Module , the APP Software can be connected , and all information of the Battery pack can display on your Mobile Phone . and you can set some parameters on Your APP software :Over-charge protection voltage , Over-discharge protection voltage, Over Current Protection, Temperature protection and Battery capacity.
| Discharge current | 20A | 30A | 35A |
| Over discharge current protection | 30A | 40A | 45A |
| MOSFET | <10mΩ | ||
| Charge current | 10A | 20A | 25A |
| Charging Voltage | Li ion: Series*4.2V Lifepo4: Series*3.6V | ||
| Over charge protection | Balance Voltage |
|
Dection Voltage: Li-ion: 4.25±0.03V Lifepo4: 3.75±0.03V |
Dection Voltage: Li-ion:≥4.0V Lifepo4:≥3.4V |
| Detection Delay Time:1000mS |
Release Voltage: Li-ion:<4.0V Lifepo4:<3.4V |
|
Release Voltage: Li-ion:4.15±0.025V Lifepo4:3.3±0.05V |
Balance Current: 50~60mA |
| Over Discharge Voltage Protection | Over Discharge Current Protection |
|
Detection Voltage: Li ion: 2.7±0.1V Lifepo4: 2.5±0.1V |
Detection Voltage: 150mV |
| Detection Delay Time: 1000mS | Detection Delay Time: 5mS |
| Release VoltageL: Li ion: 2.9±0.1V
Lifepo4: 2.7±0.1V |
Release Condition: Disconnect/Charge reactivate |
Packaging & Shipping
FAQ
1.What is the common port and separate port? what is the difference?
We take 13S48V16A BMS as an example, common port 16A 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 16A. 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 0.1V, 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.
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