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12V 640Wh 4S9P Bluetooth Lithium Battery

China MaxLi Battery Ltd. certification
China MaxLi Battery Ltd. certification
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12V 640Wh 4S9P Bluetooth Lithium Battery

12V 640Wh 4S9P Bluetooth Lithium Battery
12V 640Wh 4S9P Bluetooth Lithium Battery 12V 640Wh 4S9P Bluetooth Lithium Battery 12V 640Wh 4S9P Bluetooth Lithium Battery 12V 640Wh 4S9P Bluetooth Lithium Battery

Large Image :  12V 640Wh 4S9P Bluetooth Lithium Battery

Product Details:
Place of Origin: China
Brand Name: MaxLi
Certification: CE, UN38.3, MSDS, ISO9001, ROHS
Model Number: YS12-50
Payment & Shipping Terms:
Minimum Order Quantity: consultation
Price: consultation
Packaging Details: Standard export carton box
Delivery Time: 15-20days for samples
Payment Terms: T/T, , Alibaba Trade Assurance
Supply Ability: 5000pcs per month
Detailed Product Description
Battery Type: Smart Bluetooth 12V Nominal Voltage: 12.8v
Charging Voltage: 14.6V Nominal Capacity: 54Ah
Constant Discharge Current: 50A Constant Charge Current: 50A
Peak Current: 150A Last For 3 Seconds Built-in BMS: With Bluetooth
Size: L229*W139*H209mm Weight: 7.5kgs
High Light:

4S9P Bluetooth Lithium battery


640Wh prismatic battery cell


12V smart lithium ion battery

Deep Cycle Solar Battery Lifepo4 12V 50Ah Lithium Li-ion Lifepo4 Battery Pack


Brief introducation


12V lithium ion battery is new environmentally friendly backup power system focus on short-time and high-rate discharge scenarios.The environmentally friendly lithium ion battery configured with high-performance BMS, has a wide range of performance and application advantages compared with conventional battery.



Reference photo of Smart bluetooth 12V 50Ah

12V 640Wh 4S9P Bluetooth Lithium Battery 0


The advantage of 12V 50Ah


1. Safe - fire resistance
2. Long cycle life - 95% DOD cycle Over 3000 times
3. Excellent high temperature performance - can work well under 60 ° C operating environment
4. High energy density - lighter and smaller
5. Maintenance-free type.
6. No contamination


Specification of 12 volt 50Ah lithium batteries 





Electrical Characteristics

Nominal voltage

Nominal Capacity 50Ah
Energy 640Wh
Internal Resistance ≤60mΩ
Cycle Life >2000 cycles @1C 100%DOD
Months Self Discharge <3%

Efficiency of charge


100% @0.5C

Efficiency of discharge


96~99% @1C



Standard Charge

Charge voltage 14.4±0.1V
Charge mode 0.2C to 14.4V, then 14.4V,charge current to 0. 02C (CC/CV)
Recommend voltage 25A
Max Charge Current 50A
Charge cut off voltage 14.6V±0.1V


Standard Discharge

Continuous Current 50A
Max. Pulse Current 150A(<2s)

Discharge cut off voltage




Charge Temperature 0 ℃ to 45 ℃ (32F to 113F) @60±25% Relative Humidity
Discharge Temperature -20 ℃ to 60 ℃ (-4F to 140F) @60±25% Relative Humidity
Storage temperature 0 ℃ to 40 ℃ (32F to 104F) @60±25% Relative Humidity
IP rate IP56





Cell & Method 32700 6Ah 4S9P
Plastic Case ABS
Dimensions (mm./in.) 194x130x162mm
Weight (kg./lbs.) 7.5Kgs
Terminal M8
Bluetoot  with


The cell type can be specified,cylindrical and prismatic cells to make the battery


Every Lithium Battery we offer is built with a Fail Safe Built in Battery Protection System (BMS).
LiFePO4 battery created by the use of Iron (Fe) as a cathode material. LiFePO4 cells have a higher discharge current, do not explode under extreme conditions and weigh less.


12V 640Wh 4S9P Bluetooth Lithium Battery 1

Our Service

1. Fast delivery service.
2. Quick response to your any inquiry within 12 hours.
3. We offer 3 years' warranty on our LiFePO4 battery.
4. Customized design is available, OEM and ODM are welcome.
5. Offer the highest quality with the best price.
6. Professional pre-sales service with whole-hearted after-sales service.


Packaging & Shipping


1. Pack in safety industrial package, with IATA shipping standard.
2. For sample or small order: ship by DHL, UPS, FedEx and TNT etc…
3. For large order, ship by AIR or OCEAN.


Contact of MaxLi Battery


Liz Ruan


Whatsapp, wechat, skype: +86 138 2338 3063



Contact Details
MaxLi Battery Ltd.

Contact Person: admin

Tel: +8613823383063

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