Enerkey 120A Continuous Discharge 4S BMS Lithium Battery Protection Board for Solar Street Lights
Brand Name:Enerkey
Certification:ISO9001/CE/ROHS
Model Number:EK-BM3R8S120A
Minimum Order Quantity:20pieces
Delivery Time:3-5days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Location:
Shenzhen China
Address:
Area A, 9th Floor, Building G, Guancheng Low Carbon Industrial Park, Shangcun Community, Gongming Street, Guangming District, Shenzhen, China, 518106
Supplier`s last login times:
within 39 hours
Product Details
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Product Details
Enerkey 120A Continuous Discharge 4S BMS Lithium Battery Protection Board for Solar Street Lights
Product Description
Core parameters
1. Battery configuration
Supports 3S-8S lithium battery pack (ternary lithium/lithium iron
phosphate/lithium titanate compatible)
2. Current performance
Continuous discharge current: 120A (stable operation)
Peak current: 300A (short-time pulse working condition support)
3. Voltage range
Adapts to 12V-33.6V system (full coverage of 3S ternary lithium to
8S iron lithium)
4. Temperature monitoring
Built-in NTC sensor, real-time monitoring of battery pack
temperature (accuracy ±1℃)
Functional characteristics
1. Balance management
Passive balance technology, balance current 80mA-150mA (supports
battery cell voltage difference repair)
2. Multiple protection mechanisms
Overcharge/over-discharge protection, overcurrent protection, short
circuit protection, temperature protection (threshold programmable)
3. Heat dissipation design
Aluminum alloy shell + internal thermal conductive silicone,
supports -20℃~85℃ wide temperature environment operation
4. Extension interface
Support Type-C communication expansion (optional Bluetooth/RS485
module remote monitoring)
Structural design
1. Shell material
All-aluminum alloy die-cast shell, surface anodized
(anti-corrosion, anti-wear)
2. Heat dissipation optimization
Internally integrated heat sink, with air cooling/natural
convection dual heat dissipation solution (support long-term
full-load operation)
3. Lightweight design
Size 95×68×15mm, weight ≤2000g (compact package, suitable for
multi-scenario installation)
Application scenarios
• On-board energy storage system: support RV/electric vehicle
lithium battery pack management
• Industrial equipment: AGV robot, drone battery module matching
• Outdoor power supply: portable energy storage equipment, solar
energy storage system
Certification and warranty
• Comply with RoHS/CE certification standards, provide 12-month
warranty (support customized test reports)
Price and availability
• Standard version: 3S-8S general type, bulk purchase unit price
starts at 150 yuan (≥500 pieces)
• Customized version: supports peak current upgrade to 300A, cell
parameter customization required
Note: Some functions (such as RS458, RS232, CAN communication) need
to be clearly specified during purchase.
Technical Parameters
| Item type | Parameters | |||||||||
| 1 | Parameter Overview | Product Model | EK-BM3R8S120A | |||||||
| Product Size(mm) | L95*W68*T15 | |||||||||
| Product Weight(kg) | 0.25 | |||||||||
| 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 | 120A | 120A | 120A | 120A | ||||||
| Peak starting current | 300A | 300A | 300A | 300A | ||||||
| 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 | 120A/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 | 150A/2S, disconnect load or activate charging | |||||||||
| ②Overcurrent protection value | 250A/0.5S, disconnect load or activate charging | |||||||||
| Short circuit protection value | 500A/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 with heatsink
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
Enerkey 120A Continuous Discharge 4S BMS Lithium Battery Protection Board for Solar Street Lights
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