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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: TLH
  • Model Number: TLH-4S2P-M-148400
  • Type: LiMnO2
  • Nominal Voltage: 14.8V
  • Size: 74x40x70(mm)
  • Nominal Capacity: 4000mAh
  • Application: Breast Pump,cold therapy machine,facal machine,Oxygen concentrater
  • Confirguration: 4S2P
  • Power switch: Included
  • Bult PCB: Yes
  • Cycle life: 800 times
  • Battery Warranty: 1 year
  • Material: Li(NiCoMn)O2
  • Battery charger: 16.8V 2A charger
  • Weight: 380g
  • Certificate: CE/RoHS/UN38.3/MSDS

Packaging & Delivery

Packaging Details neutral package or customized
Delivery Time 15-20 days after confirm payment

14.8v 4000mAh  li ion battery pack for medical device ISO9001-2008 factory

Production Description










Discharge cutoff voltage


Charge voltage


Standard charge current


Max working current


Charging and charger

CC/CV with professional charger


About 380g

Working temperature

Charge: 0-45




12 months

Cycle life

800 cycles with DOD100% to 80% capacity under normal temperature

Lead time for bulk production15-20 days after confirm payment

OEM (Yes or NO)





Packaging & Shipping

Factory version packing:PE bag + Foam box + one double-deck

corrugated Carton

Customized Packing as request
ShippingBy Sea or By air
By express(Fedex, TNT, UPS,DHL,EMS...etc)  or  as request

 TLH battery Package:

 Poor package,this broken carton caused by poor package.





After-sales Service


1 year warranty once shipped out. After we get the pictures or videos of the defective batteries,will sugges how to repair battery, if can not be fixed, a new replacement battery will be send to customer by free .


Product Systerm


 Production Line:

All workers are experienced and well trained. 




Battery Cell Sorting&Battery BMS Test:

 All battery cells will be stewing above 3 days in warehouse before assemble.

Only qualified BMS could be used for following battery pack assemble.


TLH BATTERY use automatic welding machines for battery pack production. 



Aging Test:

Each battery must be passed through aging test before shipment. 


 Finished Battery Stewing:


 Battery Comprehensive Test:

a group of skillful and experienced QC staff for battery quality test and appearance inspection. 

test the charge and discharge function of each battery pack.

test each charger using our load machine.




Company Information

Tianlihe Technology Co.,Ltd, founded in 2005, over 10 years experiences in designing and manufacturing lithium battery, also is become one of the best Lithium ion Battery Manufacturer in China.

We also design and develop BMS communication protocol like 232,485 and CAN BUS ect. All our lithium batteries are equipped with Deep Sleep Function now.

 Our products covers up E-bike battery, Electric bike battery, Electric bicycle battery, Electric scooter battery, Electric golf trolley battery, LED light battery and OEM lithium battery pack. Every battery is carefully tested by our battery experts, so you are always getting top quality batteries. 


Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
China (Mainland)
Transaction Level:
Supplier Assessments:
28 Transactions 1,900,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $207,000
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