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Enerkey 5-7S 5A Active Balancer Battery Circuit Protection Board for Lithium Ion/Lifepo4/LTO Battery Pack

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Address: Area A, 9th Floor, Building G, Guancheng Low Carbon Industrial Park, Shangcun Community, Gongming Street, Guangming District, Shenzhen, China, 518106

Contact name:Kiwi Xiao

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Enerkey 5-7S 5A Active Balancer Battery Circuit Protection Board for Lithium Ion/Lifepo4/LTO Battery Pack

Country/Region china
City & Province shenzhen
Categories Electronic Signs
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Product Details

Product Description                                                                                                                                                                                                                                                                                                                                                                                               

 

Top Balancing
Top balancing emphasises the charging characteristics of the cell. The main factor at play here is the cell voltages. The main goal here is that at the fully charged voltage, the cell capacity of all units in the battery pack is the same. Top balancing aims to equal the capacity of the cells when they are at the fully charged voltage.

Steps to Top Balance the Battery
Disconnect the individual cells from the battery pack.
Set up the cells in a parallel connection. Battery balancing should never be done in a series connection.
Preset the charging voltage to 3.5 V in a DC supply. Double-check to see the polarity of the cells is correct.
Monitor the supply voltage and the cell voltages from time to time.
Set the DC supply voltage to 3.65 V as the cell voltages near 3.5 V. Monitor it constantly at this point.
When the current falls down close to 0 A, the cells are charged. Turn off the DC power supply.
Wait for some time for the cell voltage to become stable and redistributed among each other.
The cells are now top-balanced. Check the voltage of each cell with a voltmeter or a multimeter. You should find the same voltage of each cell to be 3.65 V. Any small variations of some millivolts are considered negligible and nothing to worry about.
Connect the cells back into your battery pack.

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 modelEK-C6S5AEK-C7S5AEK-C8S5A
Product strings
6S
7S
8S
Suitable strings 
4-6S
5-7S
6-8S
Product Size(mm)
L69*W69*T16
L80*W69.5*T16
L91*W70*T16
Weight with box
0.16kg
0.18kg
0.19kg
Battery Type
NCM/LFP/LTO
NCM/LFP/LTO
NCM/LFP/LTO
Suitable capacity
30ah-300ah
Voltage equalization accuracy5mV (typical value)
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
Under voltage protection
Start balancing voltage
NCM/LFP version: 2.835V
LTO version: 1.89V
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
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 current7mA, the total string draws power
Sleep standby current
0.1mA(typical value)
Operating Temperature
-20℃ ~ +60℃

 

 

Packing List                                                                                                                                                                                                                                                                                                                                                                                                             

 Wire connect                                                                                                                                                                                                                                                                                                                                                                                                         

A single EK-C7S5A supports the use of 5 and 6 and 7 string battery packs. The wiring method is as follows:

EK-C7S5A supports cascading battery packs. Fox exmple, 2pcs of 7s cascade to 13s, see below drawing:

NOTE:As shown in the figure above,there can be multiple common ends of energy exchangeso that the efficiency of equilibrium will be higher;It is also possible to use only one common end of theenergy exchange atthejunction of two modules.The other free feet are suspended, and it is best todistribute the number of strings equally on each board.If you need the cascade diagram for more strings, Please contact our online service, Thanks.

 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

 

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