LWS Smart BMS 3S 4S 50A 100A Lifepo4 RS485 CANBUS Li-ion BT Battery Management System BMS
🛡️ Core Functions
This Smart BMS is designed to detect and protect the battery from over-charge, over-discharge, over-current, and short-circuit. It features built-in temperature detecting protection and an automatic voltage balance function.
- High-end electronic components (High-End IC and MOSFET)
- Stable quality working performance with simple structure design
- Flexible application for fewer series batteries
- Full set of protection measures against external accidents
Product Specifications
| Model: LWS-4S50A-1043 |
| 1 |
Voltage |
Charging voltage |
DC: 14.4V CC/CV |
|
|
Balance voltage for single cell |
3.0±0.05V |
| 2 |
Current |
Balance current for single cell |
60±20mA |
|
|
Max continuous charging/discharging |
≤50A |
| 3 |
Over charge |
Detection voltage |
3.65±0.025V |
|
|
Release voltage |
3.55±0.05V |
| 4 |
Over discharge |
Detection voltage |
2.5±0.05V |
|
|
Release voltage |
2.7±0.1V |
| 5 |
Short Circuit |
Condition |
Exterior short circuit |
| 6 |
Resistance |
MOSFET |
≤50mΩ |
| 7 |
Temperature |
Operating Range |
-20~+60ºC |
Manufacturing and Capability
Founded in 2013, we specialize in Battery PCM & BMS for Lithium-ion, LiFePo4, and LTO battery packs, offering comprehensive ODM & OEM services. With a portfolio of over 900 types of hardware and software BMS (including HDQ/I2C/SMBUS/RS485/RS232 & Bluetooth), our solutions cover battery assemblies from 1S to 35S with currents up to 350A.
Our products are widely used in lighting, power tools, electric bicycles, medical equipment, and EV applications. We are ISO 9001:2015 certified and were awarded High Technology Expertise (HNTE) in 2018.
Frequently Asked Questions
How many Ampere protection circuit boards should I choose?
It depends on your load power, such as electric motor power. Please consult technical support regarding your specific equipment needs before purchasing.
What is the distinction between same port and different port wiring?
In different port wiring, the cathode of the charger and load are separate. In same port wiring, the cathode is shared, meaning the charging current is equal to the discharge current.
How does the balance function work?
The equilibrium function discharges high-voltage cells through a resistor while waiting for low-voltage cells to catch up. This ensures consistent voltage across all cells and improves overall battery performance.
Is there a Minimum Order Requirement (MOQ)?
No, we do not have a strict MOQ. We cater to various capacity and size requirements, and both ODM and OEM services are welcome.
How is product quality guaranteed?
We maintain strict quality control by always providing a pre-production sample before mass production and conducting a final inspection before shipment.
Can you design a custom BMS for my equipment?
Yes. Just provide the relative voltage, cell type, current requirements, or equipment details, and we can recommend or design a suitable BMS for your specific application.
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