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| Categories | Lifepo4 Battery BMS |
|---|---|
| Brand Name: | Enerkey |
| Model Number: | EK-BM3R4S40A |
| Certification: | ISO9001/CE/ROHS |
| Place of Origin: | Shenzhen, China |
| MOQ: | 10pieces |
| Price: | $4.5-$5 |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability: | 1000000pcs per day |
| Delivery Time: | 3-5days |
| Packaging Details: | Strong paper box +EVA Foam |
| Product Name: | 4S 40A Lithium Battery BMS |
| Copper Thickness: | 2oz |
| Application: | Home energy storage |
| Board Thickness: | 1.6mm |
| Battery Type: | Li-ion/Lifepo4/Lto/SIB |
| Allowable Operating Voltage Range: | 0-30V |
| Rated Discharge Currenturrent: | 40A |
| Peak Starting Current: | 85A |
| Used For: | Lithium Battery Protection Board |
| Keywords: | 4S BMS |
| Base Material: | FR-4 |
| Surface Finishing: | Lead-free spray tin |
| Product Size: | L36xW36xT5mm |
| Weight with Package: | 0.08kg |
| Company Info. |
| Shenzhen Juyi Science And Trade Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |
Enerkey 4S 15.6V 40A PCB BMS Protection Board for 18650 Li-ion/Lifepo4/Lto/SIB Lithium Battery Cell Module
Application Scenarios
Power Tools: Provides stable power support for appliances such as
drills and angle grinders.
Energy Storage Systems: Used for home or industrial energy storage
to ensure battery pack safety.
Electric Bicycles: Facilitates efficient vehicle operation and
extends range.
Other Scenarios: Suitable for portable devices or customized
projects requiring high current output.
Instructions for Use
Installation Guide:
Connect the protection board to the positive and negative terminals
of the battery pack correctly, ensuring correct polarity.
Use insulating tape to secure the wiring and prevent short
circuits.
Install heat sinks to enhance heat dissipation.
Maintenance Recommendations:
Regularly check the protection board connection points to prevent
loosening.
Avoid prolonged use in high-temperature or humid environments.
Precautions:
Do not connect the battery in reverse, as this may damage the
protection board.
If abnormal heating or frequent protection triggering occurs, stop
use immediately and check.
Frequently Asked Questions
Q: Does the protection board support fast charging?
A: This product supports standard charging protocols. For fast
charging functionality, please confirm charger compatibility.
Q: How do I determine if the protection board is working properly?
A: Use a multimeter to monitor the battery voltage. If the
protection board does not trigger and the voltage is stable, then
it is working normally.
Product Advantages:
Safe and Reliable: Multiple protection mechanisms reduce the risk
of battery failure.
Highly Compatible: Suitable for various 3S/4S lithium battery
packs, flexibly adaptable to different devices. (AI generated)
| Item type | Parameters | |||||||||
| 1 | Parameter Overview | Product Model | EK-BM3R4S40A | |||||||
| Product Size(mm) | L36*W36*T5 | |||||||||
| Product Weight(kg) | 0.08 | |||||||||
| Product Material | FR-4 / Lead-free spray tin | |||||||||
| Applicable battery type | Lifepo4 | Li-ion | Lto | SIB | ||||||
| Applicable battery string | 3S / 4S | 3S / 4S | 3S / 4S | 3S / 4S | ||||||
| Rated discharge current | 40A | 40A | 40A | 40A | ||||||
| Peak starting current | 85A | 85A | 85A | 85A | ||||||
| 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 |
| Overcurrent value | 40A/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 | 45A/2S, disconnect load or activate charging | |||||||||
| ②Overcurrent protection value | 85A/0.5S, disconnect load or activate charging | |||||||||
| Short circuit protection value | 150A/64uS, 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.
|
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