Daly bms 17s 60v 40A lithium 62.9v Battery Protection Board For Electric Motorcycle e-bike scooter battery management system

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Place of Origin	China	Brand Name	DALY
Model Number	J17C17S40A	Base Material	FR-4
Copper Thickness	2OZ	Board Thickness	2mm
Min. Hole Size	1mm	Min. Line Width	0.5mm
Min. Line Spacing	1mm	Surface Finishing	HASL

Product Details

Product Description

Product Name	Li-ion 17S 60V 40A common port with balance
Applicable battery strings	17S
Applicable battery standard voltage	3.6V/3.7V
Passable maximum continuous current	40A
Through the maximum charging current	20A
Over charge detect voltage	4.25V
Over discharge detect voltage	2.7V
Balance detect Voltage	4.18V
Balance current	30Ma
Product Size	618212mm
Product Weight	About 200g

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※We are the BMS manufacturers, can provide customized services;
※We are specializing in provide reliable and stable BMS solution and program;
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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 15A, 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 30ma(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 15A for below 350W, 20A for below500W, 30A 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.