Smart 40A 72V BMS for Electric Bicycle Battery Pack

• Charge Current: 20A/30A/40A
• Discharge Current: 20A/30A/40A
• Balance Current: 72mA/ 84mA
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: LWS-20S40A-375
• Balance Voltage: 3.6V/ 4.2V
• Over Charge Protection Voltage: 3.75V /4.25V
• Over Discharge Protection Voltage: 2.2V/2.75V
• Rated Voltage: 36V /42V
• Over Current Protection: 120+-20A
• Short Circuit Protection: Yes
• Temperature Protection: 75 Degrees
• Metal Coating: Copper
• Mode of Production: SMT
• Layers: Multilayer
• Base Material: Fr-4
• Certification: RoHS, ISO
• Transport Package: Anti-Static Bag Packaging/ Carton Packaging
• Specification: 120*65*10mm
• Trademark: LWS
• Origin: China
• HS Code: 8536300000
• Production Capacity: 5000PCS/Month
• Package Size: 13.00cm * 6.50cm * 2.00cm
• Package Gross Weight: 0.300kg
• Lead Time: 7 days (1 - 6 Pieces) ; To be negotiated ( > 6 Pieces)

Product Description

Smart 20s Battery Management System for Electric Bicycle Battery Pack with Circuit Board Protection and 72V 40A BMS.

This product is designed to revolutionize the way you manage and protect your electric bicycle battery pack, ensuring optimal performance and longevity.

With the increasing popularity of electric bicycles, it is crucial to have a reliable battery management system in place. Our Smart 20s BMS is the perfect solution, offering advanced circuit board protection and a powerful 72V 40A BMS. This means that your battery pack will be safeguarded against overcharging, over-discharging, and short circuits, ensuring the safety and durability of your electric bicycle.

The circuit board protection feature of our Smart 20s BMS is a game-changer. It acts as a shield, preventing any potential damage to the battery pack caused by voltage spikes or fluctuations. This not only extends the lifespan of your battery but also enhances its overall performance, allowing you to enjoy longer rides without worrying about sudden power failures.

Furthermore, the 72V 40A BMS provides efficient and reliable power management. It ensures that your electric bicycle battery pack operates at its optimal capacity, delivering consistent and powerful performance. Whether you are commuting to work or embarking on an adventurous off-road journey, our Smart 20s BMS will ensure that your electric bicycle is always ready to go the extra mile.

We understand the importance of quality and reliability when it comes to battery management systems. That is why our Smart 20s BMS is meticulously designed and rigorously tested to meet the highest industry standards. You can trust that our product will deliver exceptional performance and durability, allowing you to enjoy a seamless and worry-free electric bicycle experience.

In conclusion, the Smart 20s Battery Management System for Electric Bicycle Battery Pack with Circuit Board Protection and 72V 40A BMS is the ultimate solution for anyone seeking to enhance the performance and longevity of their electric bicycle. With its advanced features and robust design, this product is a must-have for electric bicycle enthusiasts. Invest in the Smart 20s BMS today and take your electric bicycle experience to new heights.

NOTE:Electric Switch, Temperature Switch, Passive Balance, Active Balance, 5V output, NTC,bluetooth UART/BT/RS485/CAN communication/LCD dispay and etc., if you need any above accessories, please do contact our sales fisrt. All items could be customized to your requirements. Without any requests after order placed, we will produce as default in the specification details page.

Li-ion Product Specifications-LWS
		Product  parameters(example:LFion-13S)						supplement
		15A	25A	30A	40A	100A	200A	About your  products,  just tell  us the rated  voltage / current  or application etc ,we will help  to recommend the most suitable  products for you.
Current	Maxi mal continuous charging current	15A	25A	30A	40A	100A	200A
	Maxi mal continuous Discharging current	15A	25A	30A	40A	100A	200A
Over current protection	Over current detection current	80±20A	120±20A	120±20A	120±20A	300±50A	600±100A
Resistance	Protection circuitry (MOSFET)	≤20mΩ	≤20mΩ	≤20mΩ	≤20mΩ	≤20mΩ	≤20mΩ
Current	Current consumption	≤20μA	≤20μA	≤25μA	≤25μA	≤20μA	≤50μA
Voltage	Charging voltage	DC:54.6V CC/CV 4.2/cell
	Balance voltage for single cell	4.25±0.025V
Current	Balance Current for single cell	42±5mA
Over charge Protection	Over charge detection voltage for single cell	4.25±0.025V
	Over charge detection delay time	500mS-1500mS						customizable
	Over charge release voltage for single cell	4.15±0.05V						customizable
Over discharge prodectiom	Over discharge detection volage for singlecell	2.75±0.08V						customizable
	Over discharge detection delay time	500mS-1500mS						customizable
	Over discharge release voltage for single cell	3.0±1.0V						customizable
Over Current Protection	Over Current detection voltage	0.1±0.025V						customizable
	Release condition	Cut load,Automatic recovery
Short protection	Detection condition	Exterior short circuit
	Detection delay time	200-500uS						customizable
	Release condition	Cut load,Automatic recovery
Temperature	Operating Temperature Range	-20~+65ºC						customizable
	Storage Temperature Range	-20~+85ºC						customizable

 

Lifepo4 Product Specifications-LWS
		Product  parameters(example:LFion-13S)						supplement
		15A	25A	30A	40A	100A	200A	About your products,     just tell us the rated         voltage / current or application etc,we will help  to recommend the most suitable products for you.
Current	Maxi mal continuous charging current	15A	25A	30A	40A	100A	200A
	Maxi mal continuous Discharging current	15A	25A	30A	40A	100A	200A
Over current protection	Over current detection current	80±20A	120±20A	120±20A	120±20A	300±50A	600±100A
Resistance	Protection circuitry (MOSFET)	≤20mΩ	≤20mΩ	≤20mΩ	≤20mΩ	≤20mΩ	≤20mΩ
Current	Current consumption	≤20μA	≤20μA	≤25μA	≤25μA	≤20μA	≤50μA
Voltage	Charging voltage	DC:46.8V CC/CV 3.6/cell
	Balance voltage for single cell	3.60±0.025V
Current	Balance Current for single cell	36±5mA
Over charge Protection	Over charge detection voltage for single cell	3.90±0.025V
	Over charge detection delay time	0.5S-2S						customizable
	Over charge release voltage for single cell	3.80±0.025V						customizable
Over discharge prodectiom	Over discharge detection volage for singlecell	2.00±0.05V						customizable
	Over discharge detection delay time	10mS-200mS						customizable
	Over discharge release voltage for single cell	2.50±0.05V						customizable
Over Current Protection	Over Current detection voltage	0.10±0.015V						customizable
	Release condition	Cut load,Automatic recovery
Short protection	Detection condition	Exterior short circuit
	Detection delay time	200-500uS						customizable
	Release condition	Cut load,Automatic recovery
Temperature	Operating Temperature Range	-40~+65ºC						customizable
	Storage Temperature Range	-40~+125ºC						customizable

 

 

 

 

 

 

ABOUT US
   Shenzhen Li-ion Battery Bodyguard Technology Co.,Ltd was founded in 2013. We provide Battery PCM &BMS for Lithium ion,LiFePo4,LTO battery pack and ODM & OEM services.Since established, we have designed more than 900 types of hardware PCM/BMS, and software BMS including HDQ/12C/SMBUS/ RS485/RS232 & Bluetooth and so on. Mainly covers battery assembly 1S-35S in series, working current up to 350A; the products arewidely used in light ,power tool, electric bicycle,medical equipment, EV application ....etc. Li-ion Battery Bodyguard Technology Co., Ltd has passed ISO 9001(2015) certification.We were also awarded High Technology Expertise (HNTE) in 2018.
   The spirit of "honesty, credibility first" business principle, fast delivery time, competitive price ,high-quality products & services have got us many customer's affirmation.And because of that, our products have been sold to not only Germany, France, the United States, Australia, India, South Korea, Japan but also other countries and regions.
    As a professional BMS designer and manufacturer, we are willing to support, help every client to open new markets and extend new business. Meet us, Meet reliablility, Meet our mutual development!

3.FAQ
Q: How do I tell what kind of battery is my product used with ?
A: Please take a look at the battery body.if the normal voltage of your battery shows as 3.2V,the battery will be LiFePo4.If the normal voltage of your battery shows as 3.6V or 3.7V, the battery will be Li-ion or Li-polymer battery. you can also ask battery manufacturer the material of battery.

Q: Can I use this protection circuit board for my battery?
A: Can use this protection circuit board, or not?
There are 2 questions:
How much cells in series is your battery pack?
The protection circuit board you need to buy must be same cells in series as your battery pack.

Q: What material is your battery?
A:Only the LiFePo4 battery has different electric parameter from other battery, so if you need buy the protection circuit board for LiFePo4 battery , Please let us know firstly.

Q: Do we need cell balance or not?
A: The function of balance : Since battery is made of many pcs of cells in parallel and in series, the cells can't be the same as no two people in the world is the same , so can only put in group with similar performance is not without balance function

Q: Do you have Minimum Order Requirement (MOQ)?
A: It depends, different customer have different requirement ,We can provide various capacity and size as per your requirements,Also ODM / OEM is welcome.

About your products, just tell us the relative voltage/ cells/ current A or equipment etc,we will help to recommend the most suitable products for you.