Shenzhen Juyi Science And Trade Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 1000000pcs per day |
| Delivery Time | 1-3days |
| Packaging Details | Strong paper box +EVA Foam |
| Product name | 4S 5A Active Balancer For Li-ion Battery |
| Copper Thickness | 2oz |
| Application | Scooters, shared cars, solar power stations |
| Board Thickness | 1.6mm |
| Battery Type | NCM / LFP/ LTO |
| Battery Strings | 3s-4s |
| Base Material | FR-4 |
| Surface Finishing | Lead-free HASL |
| Usage | Lithium lifepo4 battery pack |
| Keywords | Lithium Lipo Battery Energy Active Equalizer |
| Product Size | L66*W46*T16mm |
| Weight with Package | 0.13kg |
| Brand Name | Enerkey |
| Model Number | EK-C4S5A |
| Certification | ISO9001/CE/ROHS |
| Place of Origin | Shenzhen, China |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 1000000pcs per day |
| Delivery Time | 1-3days | Packaging Details | Strong paper box +EVA Foam |
| Product name | 4S 5A Active Balancer For Li-ion Battery | Copper Thickness | 2oz |
| Application | Scooters, shared cars, solar power stations | Board Thickness | 1.6mm |
| Battery Type | NCM / LFP/ LTO | Battery Strings | 3s-4s |
| Base Material | FR-4 | Surface Finishing | Lead-free HASL |
| Usage | Lithium lifepo4 battery pack | Keywords | Lithium Lipo Battery Energy Active Equalizer |
| Product Size | L66*W46*T16mm | Weight with Package | 0.13kg |
| Brand Name | Enerkey | Model Number | EK-C4S5A |
| Certification | ISO9001/CE/ROHS | Place of Origin | Shenzhen, China |
| High Light | High Precision 5A Active Balancer ，5A Active Balancer Board ，LiFePO4 Battery Active Balancer | ||
Enerkey Battery Active Balancer 3s 4s High Precision 5A Active Balancer Board for Lithium/ LiFePO4 Battery
Active cell balancing transfers energy to cells with a lower charge level from the high-charged cells. Once the charge level of weaker cells becomes equal to the other cells, an equal charging voltage is provided to all cells. This ensures that all the cells are fully charged together.
The overcharging caused by unbalanced cells also poses serious safety concerns. The overcharging causes a temperature rise in addition to cell degradation. LiFePO4 batteries have a high energy density. Therefore, the temperature rise brings the possibility of a thermal runaway.
Thermal runaway causes a series of uncontrolled chemical reactions in the battery. These reactions can lead to battery fire or explosions. Therefore, there is a safety risk for the people and property near the battery pack.
The overcharging caused by unbalanced cells also poses serious safety concerns. The overcharging causes a temperature rise in addition to cell degradation. LiFePO4 batteries have a high energy density. Therefore, the temperature rise brings the possibility of a thermal runaway.
Thermal runaway causes a series of uncontrolled chemical reactions in the battery. These reactions can lead to battery fire or explosions. Therefore, there is a safety risk for the people and property near the battery pack.
| 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℃ | ||
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.
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.
Company Details
Business Type:
Manufacturer
Year Established:
2015
Total Annual:
10000000-50000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Shenzhen Juyi Science And Trade Co., Ltd. and EnerKey BMS Technology Co., Ltd. is a new energy enterprise engaged in the research and development of lithium battery protection panels (intelligent BMS). EnerKey BMS specializes in the field of power solution development, has accumulated m... Shenzhen Juyi Science And Trade Co., Ltd. and EnerKey BMS Technology Co., Ltd. is a new energy enterprise engaged in the research and development of lithium battery protection panels (intelligent BMS). EnerKey BMS specializes in the field of power solution development, has accumulated m...
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