Enerkey 2S 20A 7.4V 8.4V 18650 Lithium Battery Protection Board BMS 2S For Battery Pack
Brand Name:Enerkey
Certification:ISO9001/CE/ROHS
Model Number:EK-B2S20AS
Minimum Order Quantity:10pieces
Delivery Time:1-3days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Location:
Shenzhen China
Address:
Area A, 9th Floor, Building G, Guancheng Low Carbon Industrial Park, Shangcun Community, Gongming Street, Guangming District, Shenzhen, China, 518106
Supplier`s last login times:
within 39 hours
Product Details
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Product Details
Product Description
Applicable scope: Suitable for lithium batteries with nominal voltage of 3.7V and full voltage of 4.2V (including 18650, 26650, polymer lithium batteries, without limitation on the dimensions)
Product Size: 46*20*4mm
Charging voltage: 8.4V - 9.0V
Continuous discharge current (upper limit): 20A
Standard Edition: Suitable for starting drills with currents up to
25A below 50W, or resistive loads below 168W.
Note 1: The successful start of power drill requires two 10C-20C
power batteries, or four 5C-10C power batteries (ordinary 18650 can
not start drill! ! !); 0V and 8.4V cable, use 2 square mm Above
copper wire (cannot use nickel plate!!!)
Note 2: Connect 0V, 4.2V, 8.4V according to the diagram strictly.
When connecting the battery for the first time, it needs to be
charged before output.
Note 3: When the battery is charged, “430” resistance heating is a
normal phenomenon, indicating that the equalizing circuit is
working; if the “430” resistance is also heating in the state of
not charging, please check whether the wrong line is connected. For
some customers with poor electronic foundation, please explain: Do
not mix good batteries and bad batteries together! The
capacity/internal resistance of 2 batteries should be as close as
possible! (1 good battery + 1 bad battery = 2 battery use effect)
Technical Parameters
Enerkey Lithium Battery Protection Board (BMS) 2S 20A 30A 7.4V 8.4V For Photovoltaic Solar Panels and Industrial Power & Home Energy
Storage System and Electric Car and Scooter and Motorcycle | |||
| Product model | EK-B2S20AS | EK-B2S20AM | EK-B2S30AM |
Suitable battery strings | 2S | 2S | 2S |
| Product size(mm) | L46xW20xT4 | L52xW22xT3.6 | L58xW22xT4 |
| Weight with box | 0.01kg | 0.012kg | 0.014kg |
| Rated discharge current | Typ 20A | Typ 20A | Typ 30A |
| Peak starting current | Typ 100A | Typ 100A | Typ 100A |
| Over current protection current | Typ 50A | Typ 50A | Min 80A/Typ 90A Max 100A |
| Specical function | 100A high peak starting current power tool | ||
| Suitable battery type | Lithium(NCM) | ||
| Rated working voltage B+B- | Max 8.4V | ||
P+P- input withstand voltage | Max 33V | ||
Charging overcurrent protection value | Not limited | ||
| Charge detection voltage | Min 4.225V / Typ 4.28V / Max 4.305V | ||
Charge detection delay time | Min 0.5S / Typ 1S / Max 1.5S | ||
Overcharge release voltage | Min 4.03V / Typ 4.05V / Max 4.13V | ||
Discharge detection voltage | Min 2.17V / Typ 2.25V / Max 2.33V | ||
| Discharge detection delay time | Min 20ms / Typ 100ms / Max 150ms | ||
| Discharge release voltage | Min 2.8V / Typ 2.95V / Max 3.05V | ||
Conditions for lifting protection | Disconnect external load or charge self-recovery | ||
| Overcurrent detection voltage | Typ 0.1V | Min 0.175V / Typ 0.2V Max 0.225V | |
| Overcurrent protection time | Typ 100MS | Min 5S / Typ 10S Max 15S | |
| Conditions for lifting protection | Disconnect external load or charge self-recovery | ||
| Short circuit protection current | Typ 100A | Min 45A/Typ 50A Max 55A | |
| Detection delay time | Typ 250μS | Min 150μS/Typ 250μS Max 400μS | |
| Conditions for lifting protection | Disconnect external load or charge self-recovery | ||
| Main circuit on-state resistance | Typ 5mΩ / Max 9mΩ | Typ 2mΩ / Max 2.5mΩ | |
| Normal working current consumption | Typ 5μA / Max 9μA | ||
| Current consumption during sleep | Max 0.1μA | ||
Operating Temperature | -40℃ ~ +85℃ | ||
Size $ Packing List
Wire Diagram
Wiring precautions:
1. Installing the protective board requires a certain amount of
technical electronic knowledge.
2. When wiring, first connect the B- wire at the soldering pad
position to the total negative terminal of the battery (the B- wire
should be soldered to a short and thick wire) and solder the wired
terminal to the battery pack first, and then insert the protective
plate.
3. The connection between the battery terminal B- and the
protection board terminal B- should be short and thick, otherwise
it will cause the protection board to charge and discharge in
advance and malfunction.
4. You need to use thick wires when wiring P+/P-. Wires that are too thin and too long will burn the board!
FAQ
Q1. Why did we choose you?
* We can provide you with efficient after-sales service, with more than 10 years of strong technical support.
* Products have passed FCC, CE, ROHS and other international standards certification.
* We can provide you with factory price, Welcome you to visit our factory and production process.
Q2. What is your product range (type)?
*We mainly do battery management systems in the fields of power batteries, energy storage batteries and consumer batteries.
*Mainly used for LFP, Li-ino and LTO batteries.
Q3: How do I know which kind of material & type my battery is ?
*Please look the battery body, If the normal voltage of your battery shows 3.2V, The battery is LiFePo4.
*If the normal voltage of your battery shows 3.6V or 3.7V, the battery is Li-ion or Lto battery.
Q4. Do you have minimum order requirements?
Can it be customized? What is the lead time for samples and batches?
*Our minimum order quantity is 1 piece, ODM customization is available.
* 1~3 days delivery of existing samples, 3~10 days delivery of customized samples.
Q5: What if i can't use it?
*Regular products have instructional videos, We can also support online video call guidance from engineers.
Q6. What are your terms of payment?
*We accept wire transfer and cash payment, all negotiable. Payment method :visa, mastercard, T/T, PayPal, APPLE_PAY, GOOGLE_PAY, GC_REAL_TIME_BANK_TRANSFER, RMB
Q7. How do you guarantee the quality?
* All our products are subjected to professional laboratory 100% testing, as well as repeated aging tests.
* Obtained FCC, CE, ROHS and other international standard certification.
* Provide 3 years after-sales warranty service. Free spare units for replace in 3 years.
Q8. How to choose a BMS suitable for our battery?
*Depending on the voltage and current that matches your battery, you can consult our customer service and we will provide it for you equipped with the most suitable battery management system.
Q9. How can i contact you?
*We have 7x24 hours online service, Please leave us a message online.
*You can also contact us by Email, WhatsApp, WeChat, etc(see below). We are so glad to work with you.
Noted: We are source manufacturer, We have own brand for "EnerKey",We can customized product as your requirement(Voltage, Wire,Etc) .
We can provide you competitive price in the market if you have bulk
order, Please don't hesitate to contact us.
Mobile & WhatsApp & Wechat: +86 15387469240; Email: kiwi@enerkey.cn
Enerkey 2S 20A 7.4V 8.4V 18650 Lithium Battery Protection Board BMS 2S For Battery Pack
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