Shenzhen Juyi Science And Trade Co., Ltd.
Shenzhen Juyi Science And Trade Co., Ltd.
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Enerkey 8S 120A Lithium Battery BMS 300A Peak Current with Balancing Function For Electronic Car
3S-8S Smart Lithium Battery Fortress | 120A Raging Output | Redefine Battery Safety Boundary
"When current becomes art, safety is faith"
How can a protection board save a battery pack worth tens of thousands of yuan?
The answer lies in the 0.01 second overcurrent response, ±0.5℃ temperature control accuracy, and the engineers' paranoid 26 safety iterations.
Core functions
Multi-string adaptive protocol
3S-8S chaos compatibility | Four modes of lithium iron phosphate/ternary lithium titanate/sodium ion battery | Automatic topology recognition
(Just like putting customized armor on batteries of different sizes)
120A continuous discharge ≠ limit
Military-grade MOS matrix parallel connection | 120A peak pulse pressure resistance test
Seven-dimensional protection network
Overcharge/over-discharge/over-current/short circuit/over-temperature/reverse connection/imbalance
(Perform 300 data scans per second, 30 times faster than blinking)
Black technology disassembly
Dynamic balancing algorithm
"Not all balancing is called "zero voltage difference""
Using Tesla's homologous voltage division technology, the difference between cells is compressed to within ±25mV
Measured data: Capacity decay after 100 cycles <3%
Ghost cooling system
"Quiet, but deadly"
Double-sided nano-silicone thermal conductive sheet + Aerodynamic hollow structure
Heat dissipation efficiency increased by 40%, 85℃ high temperature red line never triggered
Reverse connection self-destruction interception
"Wrong wiring? We assume that users are tyrants"
The self-developed BMS chipset starts fuse isolation at the moment of reverse connection, and the MOS tube damage rate is reduced to 0.02%
Extreme cold battlefield: -20℃ frozen for 48 hours → wake-up time <2 seconds
Desert raid: full load operation under 70℃ exposure → zero protection mechanism false triggering
Violent vibration: 30G acceleration shock → solder joint detachment? Non-existent
Overcharge voltage: 4.2V-4.35V (accuracy ±0.02V)
Over-discharge recovery: 2.8V-3.0V (support software lock)
Balance strategy: passive mode
Reasons for purchase
"This is not a protection board, but a "Battery Human Rights Declaration"
Reject power cage → Release 120A primitive wildness
End the pressure difference tyranny → Dynamic balance democratic revolution
Overthrow the compatibility hegemony → 3S-8S Free Federation
| 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 | / | |||||||||
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!
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.