Shenzhen Juyi Science And Trade Co., Ltd.
Shenzhen Juyi Science And Trade Co., Ltd.
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Packaging & Delivery
Selling Units: Single item
Single package size: L77.5xW26xT7.3mm
Single gross weight: 0.02 kg
Package Type: Manufactuers will upgrade the packaging sometimes,please refer to the actual object received.
Package Content : 1* BMS *Balance wires
BMS for Lithium Battery
EK-BM3r4S50A is designed by Shenzhen Enerkey BMS Power Technology Co., Ltd. It is an intelligent protection board scheme specially designed for 3-4 series battery packs of electric bicycles and motorcycles. It is suitable for lithium batteries with different chemical properties, such as lithium ion, lithium polymer, lithium iron phosphate, etc.The protection board has strong load carrying capacity and the maximum continuous discharge current can reach 60A
1. 3-4cell series protection
2. Various protection functions for charging and discharging
3. Hardware discharge over - current, short - circuit protection function processing
4.Reserve discharge control switch and discharge temperature protection position
5.Very low static consumption current
6. With temperature function
| Enerkey Lithium Battery Protection Board (BMS) 3S 4S 5S 50A 11.2V 12.6V 16V 18V For Photovoltaic Solar Panels and Industrial Power & Home Energy Storage System and Electric Car and Scooter and Motorcycle | ||
| Product model | EK-BM3r4S50A | EK-BM5S50A |
| Suitable battery strings | 3S/4S | 5S |
| Product size(mm) | L77.5xW26xT7.3 | L77.5xW26xT7.3 |
| Weight with box | 0.02kg | 0.025kg |
| Specical function | NTC(option) | |
| Suitable battery type | Lithium(NCM) | |
| Rated discharge current | Typ 40A / Max 50A | |
| Rated working voltage B+B- | Max 30V | |
| Peak starting current | Typ 60A | |
| P+P- input withstand voltage | Max 40V | |
| Charging overcurrent protection value | Not limited | |
| Charge detection voltage | Min 4.2V / Typ 4.225V / Max 4.25V | |
| Charge detection delay time | Min 0.5S / Typ 1S / Max 1.3S | |
| Overcharge release voltage | Min 4.0V / Typ 4.005V / Max 4.05V | |
| Discharge detection voltage | Min 2.65V / Typ 2.7V / Max 2.75V | |
| Discharge detection delay time | Min 20ms / Typ 100ms / Max 150ms | |
| Discharge release voltage | Min 2.85V / Typ 2.95V / Max 3.05V | |
| Conditions for lifting protection | Disconnect external load or charge self-recovery | |
| Overcurrent detection voltage | Typ 0.1V | |
| Over current protection current | Min 75A / Typ 80A / Max 85A | |
| Overcurrent protection time | Min 0.7S / Typ 1S / Max 1.3S | |
| Conditions for lifting protection | Disconnect external load or charge self-recovery | |
| Short circuit protection current | Typ 80A | |
| Detection delay time | Min 150μS / Typ 250μS / Max 400μS | |
| Conditions for lifting protection | Disconnect external load or charge self-recovery | |
| Main circuit on-state resistance | Typ 9mΩ / Max 10mΩ | |
| Normal working current consumption | Typ 10μA / Max 15μA | |
| Current consumption during sleep | Max 2.5μA | |
| Operating Temperature | -40℃ ~ +85℃ | |
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!
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.