3.7v 18650 battery

high quality 3.7v 18650 battery
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Item3.7v 18650 battery
Capacity1200-2600 mAh / OEM & ODM nominal capacity
Nominal Voltage3.7V
Charge CurrentStandard Charge 0.5C Rapid charge 3.0C
Max.charge Current1C
Max.discharge Current5C
Standard Discharge Current0.2C
Discharge Cut-off Voltage3.0V
Charge cut-off Voltage4.2V
WeightApprox 45g
Operating Temperature0℃~45℃
Storage Temperature-20℃~60℃
Storage Humidity≤75% RH
AppearanceWithout scratch,distortion,contamination and leakage

Details Picture

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Competitive Advantage

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10Year experience in batteries fields, Products sell well in more than 30 countries around the world;
Certificates:CE, SGS, MSDS, ROSH, RoHs;
Best Testing Equipment, Professional QC team;
Best Price Best after Services;


1. LED flashlight
2. Power bank
3. Cassette radio/recorder
4. Small electronic toy
5. Story machine
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-Company Information
Dongguan FUNSONG Electronics Co., Ltd. was established in 2007. The company has R & D department, engineering and quality inspection department, to ensure product quality. Specifically for consumer electronics products to provide battery solutions. Such as Power bank
, mobile phones, solar street lights, cassette tape recorders, electric bicycle
/tricycle, LED flashlight, electronic toys, sweeping robots and so on. The company size of more than 5,000 square meters have more than 100 employees. Products sell well in more than 30 countries around the world, stable and reliable quality, timely service.

-Product availability
Size: All size customized /more than 200 kinds of standard size available
Chip: Double IC protection
Voltage: 3.7V-4.2V
Personalization center: OEM&ODM available, Logo Design,Package Design
Annual output: 24,000,000pcs

-Design capability:
Logo printing, customized package and accessories are available.

-Quality assurance
100% tested before delivery
Defects will be replaced or marked before shipment

-Packing & Shipping
1. Standard box packing 100pcs
2.OEM packing (MOQ 50,000)
By sea / air or DHL,UPS,TNT,FedEx,EMS,etc.


1.How can I get the samples?
We are honored to offer you the samples, actually we do not offer free samples, new clients need to pay for the freight charge and samples charge, and the samples charge will be deducted from the payment form the formal order.

2.How can control the quality?
We are the professional manufacturer, with 5 engineers (circuit engineer, structure engineer, process engineer, R&D engineer, chief engineer) and 7 QC (2IQC, 3IPQC, 2OQC) to ensure quality. 

3.What kind of certificates can provide for the battery?
We have some existing certificates, if custom-making design, no current certificate, but we could apply related certificates for you, but the certificates fee needs to be paid by you, if your quantity is enough certificates fee could be refunded.

4.What’s the delivery time for mass production?
Usually about 20 days, it depends on the quantity, material, cell model and so on, we suggest to check delivery time case by case.

5.What’s your main equipment?
Capacity test machine, Automatic select machine, Automatic welding machine, Semi-Automatic welding machine, Print machine, Tangent machine, SMT machine, All-purpose tester, etc.

6.If bulk order, is there any discount for order?
Yes, of course. Wecome to visit our factory and we must give you a favorable price.

7.What’s the payment method?
T/T, L/C, Western Union, PayPal

8.How about the after-sales service policy?
8 hours quick response to customer complaints and provide solution within 24 hours.