8S 5A Pro upgraded version of capacitive active balancing board
Core performance
Lossless balancing technology: Use high-frequency capacitor charging and discharging (15kHz) to transfer energy to avoid resistance heating loss, and the measured static power consumption is only 0.11W
Current and compatibility: 5A continuous balancing current, support ternary lithium/lithium iron phosphate/lithium titanate battery pack (15.6V-29.6V)
Intelligent start-stop: 5mV level pressure difference detection accuracy, automatic start when pressure difference>10mV, automatic sleep after balancing
Industrial grade protection: Aluminum alloy shell with integrated heat sink, protection level IP65, suitable for -20℃ to 85℃ environment
Project measured data
Test item Parameter
Capacitive reactance optimization 40-50mΩ (2200μF capacitor)
Capacitor expansion Support 6300μF large-capacity capacitor
Balance efficiency ≥90% (energy transfer rate)
Installation compatibility Adapt to 18AWG high-temperature wiring harness
Scenario adaptation
Battery pack repair workshop: Quickly repair the voltage difference problem of electric vehicle (such as BAIC EC series) battery cells
Energy storage system maintenance: Balance the solar energy storage cabinet battery pack to extend the life by 30%+
Industrial equipment matching: Active safety protection of UPS power supply/communication base station battery
Service guarantee
Accessory list: Balance board body × 1, aluminum alloy shell, 18AWG silicone wire
Technical support: Provide circuit diagram and installation guide (including welding precautions)
Warranty policy: 1-year limited warranty, 72-hour fault response
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
