Primary 6f22 9V Zinc Carbon battery for Electronic Devices

Our Rechargeable Battery Certifications

About Us - Professional Battery Manufacturer and Supplier in China

Shenzhen Doublepow Energy Technology CO., LTD., specializes in the R&D, manufacture, sales and service of various rechargeable battery, battery charger and consumer electrionics. Established in 2012, located in Shenzhen,China.

Our Factory We are proud of our state of the art facility using advanced processing equipment and is approved by the ISO 9001:2008, which span a total of 10,000 square meters, we can turn out over 2,000,000 pcs batteries and 1,000,000 pcs battery chargers monthly production capacity.	Our Team. Compared to other brands, the most valuable asset of "Doublepow" is our team, we have the most professional and top designers who have been in the battery industry for many years, all they are experienced and famous people in this industry.
Our Brands "Doublepow" brand is a professional rechargeable battery manufacturer, we design and manufacture a range of high-quality rechargeable batteries,battery charger and related products.	Our Products 1. Lithium Battery; 2. NiMH Battery and NiCD Battery,CR2,CR123A Battery Universal Battery; 3. Button Cell Battery(Non-rechargeable); 4. Battery Pack and Other Recycle Rechargeable Batteries; 5. Universal and Multifunctional Battery Charger for 1.2V 3.2V 3.7V 9V Battery;

If you want to know more informations about us, please Send Us An Inquiry or Email, welcome to visit our company and factory in Shenzhen, China.

1. What is an 18650 battery?

The 18650 battery is a lithium-ion cell classified by its 18mm x 65mm size, which is slightly larger than a AA battery. They’re often used in flashlights, laptops, and high-drain devices due to their superior capacity and discharge rates. 18650s come in both flat and button top styles, and usually boast 300-500 charge cycles.

2. How long does an 18650 battery last?

Most 18650 batteries will last between 300 and 500 charge cycles, but battery lifetime can be extended far beyond those numbers if charged regularly before complete discharge. All batteries degrade over time, but you’ll often get over a year or two of life from an 18650 depending on your use.

3. What is the best 18650 battery?

The best 18650 battery depends on the needs of the device you use it in. You should choose an 18650 that is slightly above your device's minimum discharge requirement, and then focus on charge capacity. 

4. What are unprotected 18650s, and are they safe?

Most batteries include protection circuit boards (PCBs) to monitor a battery’s discharge rate and internal temperature. Unprotected cells are often used by experienced users who build battery packs or use 18650s for electronic cigarette and vaping purposes, which often need higher discharge rates than protection circuits allow.
All of our unprotected lithium cells come with a warning regarding improper usage, and we encourage you to read it over before buying an unprotected cell.

5. Why choose lithium over alkaline chemistry?

Lithium batteries are a great option for today's high-end electronics as these cells typically have higher capacities than their alkaline counterparts. Although rechargeable batteries tend to cost a little more than standard alkaline batteries up front, these costs have reigned in because you won't need to replace rechargeable batteries nearly as often as alkaline cells.