Product Description
Wide voltage compatibility
Intelligently adapts to 3S to 8S lithium battery packs (nominal
voltage range: 11.1V-29.6V), one board is universal in multiple
scenarios, reducing the complexity of user selection.
200A continuous high current output
Supports peak 600A high current discharge), meets the high power
consumption requirements of power tools, power equipment, etc., and
avoids overload damage.
Seven-fold safety protection
Integrated overcharge/over-discharge/overcurrent/short
circuit/temperature protection (±2.5mV voltage detection accuracy),
real-time monitoring of battery cell status, and extended battery
life.
Intelligent balancing technology
Passive balancing (balancing current: ±80mA) reduces the voltage
difference between batteries, improves the overall performance of
the battery pack, and prevents a single battery cell failure from
causing a chain reaction.
Industrial-grade durable design
Aluminum alloy heat dissipation shell (IP65 waterproof optional),
-20℃~75℃ wide temperature range operation, adapt to harsh
environments (such as outdoor energy storage, electric vehicles).
Technical Parameters (Specifications)
Applicable battery type: Li-ion/LiFePO4 (lithium iron phosphate)
Balancing method: passive balancing
Customizable communication interface: UART/RS485 (supports remote
monitoring, optional Bluetooth module)
Installation method: plug-and-play terminal block, compatible with
standard battery pack interface
Application scenarios (Applications)
Electric transportation: electric scooters, electric bicycles, golf
carts
Energy storage system: solar energy storage, UPS backup power
supply, RV battery pack
Industrial equipment: AGV robots, medical equipment, drone power
system
User pain point solution
"Multi-string battery packs frequently have single-cell
over-discharge, resulting in overall failure"
Accurate voltage monitoring + dynamic balancing technology to
ensure cell consistency.
"Frequent power-off of the protection board when high-power e
starts"
The millisecond-level overcurrent response threshold is adjustable
to avoid false triggering.
"Protection board performance is unstable under high temperature
environment"
Built-in temperature sensor + heat dissipation design, it can still
operate safely at 75℃ high temperature.
Why choose us?
Certification guarantee: CE/FCC/RoHS certification, in compliance
with international safety standards.
Customization service: Support voltage/current/communication
protocol customization (OEM/ODM).
Global logistics: DHL/FedEx direct, 7-15 days global delivery.
Extra long warranty: 12 months free warranty
Technical Parameters
| | Item type | Parameters |
| 1 | Parameter Overview | Product Model | EK-BM3R8S200A |
| Product Size(mm) | L125*W68*T18.2 |
| Product Weight(kg) | 0.3 |
| Product Material | FR-4 / Lead-free spray tin |
| Applicable battery type | Lifepo4 | Li-ion | Lto | SIB |
| Applicable battery string | 3S-8S | 3S-8S | 3S-8S | 3S-8S |
| Rated discharge current | 200A | 200A | 200A | 200A |
| Peak starting current | 600A | 600A | 600A | 600A |
| | Item type | Trigger
(time) | Trigger
(time) | Trigger
(time) | Trigger
(time) | Trigger
(time) | Trigger
(time) | Trigger
(time) | Trigger
(time) |
| 2 | Charging protection | Overvoltage protection voltage value | 3.65V/1S | 3.50V/1S | 4.25V/1S | 4.05V/1S | 2.85V/1S | 2.75V/1S | 3.95V/1S | 3.80V/1S |
| Balanced phase difference voltage value | Trigger voltage difference 30mV / trigger time 0.5S / balance time
10S cycle |
| Balanced voltage value | 3.45V | 3.70V | 2.50V | 3.10V |
| Overcurrent value | 200A/2S, disconnect charger to recover |
| Low temperature value | Charge over-temperature protection 60℃/2S / Release 55℃/2S |
| Overtemperature value | Charging low temperature protection -5℃/2S / Release 0℃/2S |
| 3 | Discharge protection | Undervoltage protection voltage value | 2.30V/1S | 2.70V/1S | 2.75V/1S | 3.0V/1S | 1.70V/1S | 1.80V/1S | 1.50V/1S | 2.00V/1S |
| ①Overcurrent protection value | 250A/2S, disconnect load or activate charging |
| ②Overcurrent protection value | 500A/0.5S, disconnect load or activate charging |
| Short circuit protection value | 1000A/128uS, disconnect load or charge activated |
| Low temperature value | Discharge over-temperature protection 65℃/2S, release 60℃/2S |
| Overtemperature value | Discharge low temperature protection -20℃/2S, release -10℃/2S |
| 4 | Others | Standby current consumption | 25uA |
| Motherboard lock voltage | / |
Size $ Packing List
Package included:
1 * BMS
1 * NTC Terminal Cable
1 * Switch Cable
1 * Terminal Cable
6 * Terminal Lugs
6 * M5 Screws
Wire Diagram
Wiring precautions:
1. Installing the protective board requires a certain amount of
technical electronic knowledge.
2. When wiring, first connect the B- wire at the soldering pad
position to the total negative terminal of the battery (the B- wire
should be soldered to a short and thick wire) and solder the wired
terminal to the battery pack first, and then insert the protective
plate.
3. The connection between the battery terminal B- and the
protection board terminal B- should be short and thick, otherwise
it will cause the protection board to charge and discharge in
advance and malfunction.
4. You need to use thick wires when wiring P+/P-. Wires that are
too thin and too long will burn the board!
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
