Core specifications
Working voltage: 40.8V–50.4V (suitable for 12S ternary
lithium/lithium iron phosphate/lithium titanate battery pack)
Balancing current: 5A continuous energy transfer, bidirectional
lossless balancing Difference pressure response: >10mV
automatic start, ≤5mV sleep (0.1mV level monitoring accuracy)
Protection design: IP65 aluminum alloy shell, supports -30℃~85℃
extreme environment
Technical innovation
Capacitor matrix architecture
High-frequency capacitor charge and discharge (15kHz) transfer
energy, efficiency ≥92%
Dual 6300μF solid-state capacitors in parallel, capacitive
reactance as low as 35mΩ
Three-channel independent management
Synchronous balancing of 3 groups of 12S batteries (compatible in
series/parallel)
Red and green dual-color LED real-time feedback of balancing status
and fault code .
Safety protection system
Reverse connection/short circuit/overtemperature triple protection
mechanism 125℃ resistant solid-state capacitors, life span
>10,000 hours
Industrial measured performance
Parameters Value
Static power consumption <0.1W (sleep mode)
Voltage difference correction speed 15 minutes (100mV→5mV)
Application scenarios
Electric bus battery pack: Repair the voltage difference of the
battery cell and extend the cycle life by 40%+
Large photovoltaic energy storage station: Optimize the power
distribution of 100kWh+ battery clusters
Industrial UPS system: Support data center backup power supply to
improve safety redundancy
Configuration and service
Standard accessories package
Balance board body × 1 (size: 120mm×75mm)
18AWG silicone wire harness × 1 set (including cold-pressed
terminals)
Aluminum alloy shell × 1
Technical Parameters
| Fit Capacitive Active Balancer with Aluminum Shell(5A 4S-16S) |
| Product model | EK-C4S5A | EK-C8S5A | EK-C12S5A | EK-C16S5A |
| Battery string | 3/4S | 6/7/8S | 9/10/11/12S | 12/13/14/15/16S |
| Size(mm) | L86.1*W50.1*T19.5 | L96.5*W89.5*T19.5 | L141.5*W89.5*T19.5 | L145.5*W96.5*T19.5 |
| Weight with box | 0.12kg | 0.22kg | 0.32kg | 0.42kg |
| Suitable Battery type | NCM / LFP (Li-ion/Lifepo4) | NCM / LFP/LTO (Li-ion/Lifepo4/Lto) |
| Suitable Battery capacity | 30AH-300AH |
| Base material/Surface treatment | FR-4/HASL |
| Single cell voltage operating range | Li-ion/Lifepo4:2.7-4.2V LTO:1.8-4.2V |
| Undervoltage protection sleep voltage | Li-ion/Lifepo4:<2.7V LTO:<1.8V |
| Equilibrium method | Patented (patent number: ZL 2019 1 1259513.3) balancing
architecture Fit capacitor method, the entire battery pack is
balanced at the same time. |
| Equilibrium current | 0.1V voltage difference is 1A balancing current, voltage difference
is proportional to balancing current,
maximum allowable operating current is 5.5A |
| Whether need an external power supply | No external power supply is required, relying on the internal
energy transfer of the battery to achieve balance of the entire
group |
| Voltage equalization accuracy | 5mV(Typical value) |
| Quiescent current | 0.1mV(Typical value) |
| LED indicator | 1. LED steady on, balanced working 2. LED off, undervoltage sleep |
| Balance cascading | Support balanced cascading for battery packs, for example, It can
cascade for 11S, 24S, 36S, 48S.....and so on. |
| Accessories | 18awg Therminal wire 40cm |
| Work temperture | -10℃ - +60℃ |
| Feature | 24H Non-stop overall balancing, supports cascading, undervoltage
protection, ultra-low loss, etc. |
| Application | Outdoor energy storage, home energy storage, industrial and
commercial energy storage, RV modification, low-speed vehicles,
solar photovoltaic, etc., temporarily used for battery balancing
maintenance, repair, etc. |
Packing List
Wire connect
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
