Guangdong, China
Business Type:
Manufacturer/Factory & Trading Company
Year of Establishment:
Management System Certification:
ISO14001:2004, OHSAS18001:2007
Main Markets:
North America, Europe, Australia
International Commercial Terms(Incoterms):
OEM/ODM Service
Sample Available
MEI Awards
Spanish Speaker

LiFePO4 Battery, 12V Engine Start Battery, Lithium Battery manufacturer / supplier in China, offering 12V 40ah LiFePO4 Battery for Engine Starting, Heavy Duty Tow Trucks Electric Tractor Truck Head for Sale, 40FT Long Range Battery Dricve Electric Bus From Opitmumnano China and so on.

Gold Member Since 2009
Audited Supplier

12V 40ah LiFePO4 Battery for Engine Starting

Get Latest Price
Purchase Qty. / Reference FOB Price
1-9,999 Pieces US $11,000
10,000+ Pieces US $1
Production Capacity: 50000PCS/Day
Transport Package: 4pks/CTN
Payment Terms: L/C, T/T, Paypal, Western Union
Type: Lithium Ion Battery Charger
Charging Type: Electric Charger
Principle: Half-Bridge Charger
Voltage: 12V
Capacity: 40ah
Size: 190*165*175mm

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Basic Info

Model NO.: OPT1240
Weight: About 5.5kg
Trademark: optimum
Specification: UL CE
Origin: Cn
HS Code: 85078020

Product Description

1. Safe: The safest lithium battery so far, with CE, UL approved.
2. Environmental-friendly: All of our lithium battery approved RoHS.
3. Powerful: Able to discharge with 20C.
4. Long cycle life: Lithium battery have over 2000 cycles with capacity staying at 80% min.
5. No memory effect: The lithium battery are always ready for charge and use.
6. Wide temperature range: -4F~158F


1. Specialized in production of lithium battery for over 7 years.

2. Providing tailor-made high standard lithium battery energy solutions in accordance to client's demands.

3. With technical experience of over two years in on-site installation and debugging for more than 1000 HEV and EV.

4. Having made and implemented lithium battery energy solutions for over 100 styles of EV.

5. Whole journey nanny service after lithium battery saled.


1. Optimumnano Power Lithium Battery:
Mainly used for large EV, light EV, boats, planes, small medical instruments as well as portable apparatures.

2. Optimumnano Energy-storage Lithium Battery:
For PV/Wind power generation, peak-load adjustment, power station distribution, communication base station, UPS, military, etc.

Our service:

1. Your inquiry related to our lithium battery or prices will be replied in 24hrs

2. Well-trained and experienced staffs to answer all your enquires in fluent English

3. OEM&ODM, any your customized lithium battery we can help you to design and put into product

4. Distributoership are offered for your unique design and some our current models

5. Protection of your sales area, ideas of design and all your private information

6. Lithium Battery lead time: 15-25 days after order confirmed

7. Shipping freight are quoted under your requests

8. Shipping port: Shenzhen, Mainland China

9. Discounts are offered based on order quantities

10. MOQ: 1 PK lithium battery are accepted.


General Parameter


IFR 32750-5Ah

Casing material for single cell

Nickel plated steel

Standard capacity(0.2C3A)


Mininum Capacity(1C3A)


Rated voltage


Max.Charge voltage


Cut-off voltage


Standard charge current


charging Time


Max Continuous discharge current


Peak discharge current

400 A

Battery dimension


Total weight(Approx.)

About 7kg

Impedance(Max, at 1000Hz.)

≤   32mΩ

Charge method (CC/CV)







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