Enerkey BMS - active balancer 3-4S 5A

The principle of operation of this balancer is to transfer charged particles by means of a capacitor which is connected to the battery by the BMS, thus starting the balancing process. This balancer is equipped with a new ultra-low internal resistance MOS that allows efficient balancing of battery voltages. The board is made of PCB with 2oz copper thickness, which ensures reliable operation. The balancer allows you to adjust the balancing current from 0-5A. The more balanced the batteries are, the less current is needed.

 

 

Technical specifications:
◾ Package includes: active balancer, connecting cable and protective parts
◾ Suitable for battery type: Li-Ion, LiFePO4, LTO
◾ Number of connected batteries in series: 3-4
◾ Balancing current: 5A

 

Active balance
◾ Self current consumption in normal mode (with load): 0.1mA
◾ Self current consumption in idle mode (without load): 12mA
◾ Normal operating temperature range: -10℃～60℃

Technical Parameters

EnerKey BMS Active Balancer 5A 3S 4S 5S 6S 7S 8S 14S 16S 18S 19S 20S 21S LFP LTO LI-ION lifepo4 Balancer Capacitor Balancer
Product strings	3S	4S	5S
Suitable strings	3S	3-4S	4-5S
Product Size(mm)	L66*W35*T16	L66*W46*T16	L69*W58*T16
Weight with box	0.12kg	0.13kg	0.15kg
Battery Type	NCM/LFP	NCM/LFP	NCM/LFP/LTO
Suitable capacity	30ah-300ah
Balanced Cascading	Support balanced cascading for battery packs, for example , it can cascade for 11S , 24S ,36S , 48S....and so on
Single cell voltage collection range	NCM/LFP version : 2.7V-4.2V
	LTO version : 1.8-4.2V
Undervoltage protects sleep voltage	NCM/LFP version＜2.7V
	LTO version＜1.8V
Equilibrium method	Patented (Patent No.: ZL 2019 1 1259513.3) balanced architecture Fit capacitor method, the entire battery pack is balanced at the same time. Connect to the battery pack for automatic balancing (default). You can add a switch to manually turn on or off balancing.
Equilibrium current	0.1V Differential pressure 1A Balanced current,
	the differential pressure is proportional to the balanced current,
	the maximum allowable operating current is 5.5A
Voltage equalization accuracy	5mV (typical value)
External power supply	No need for an external power supply,
	relying on the internal energy transfer of the battery to achieve sdjacent equalization.
Quiescent operating current	7mA, the total string draws power
Sleep standby current	0.1mA(typical value)
Operating Temperature	-20℃ ~ +60℃

 

Packing List

 Wire connect

A single EK-C4S5A supports the use of 3s and 4s string battery packs. The wiring method is as follows:

EK-C4S5A supports cascading battery packs. Fox exmple, 2pcs of 4s cascade to 7s, see below drawing:

 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.