18650 Devices

18650 battery

Image courtesy of SparkFun Electronics

18650 batteries are used for powering everything from laptop batteries to electric vehicles. It is a standardized type of lithium-ion battery, cylindrical in shape and measuring 18mm in diameter by 65mm in length (give or take a few 1/10s of a millimeter).

They are often used alone or in groups to build battery packs and power banks, which are then used to power or recharge a device. Although most of the time they aren’t easily accessible to users, there are a number of devices that use 18650 batteries directly, and in a way they can be removed and replaced.

Many of these items happen to be flashlights but, increasingly, a number of other kinds of 18650 devices have become available.

DBPOWER Endoscope Inspection Camera Review

DBPOWER Endoscope Inspection Camera Review

The DBPOWER Endoscope Inspection Camera is marketed as ideal for plumbing, vehicle maintenance, construction, and any situation where you need to inspect an area that is hard to ...

Titathink TT531W-N WiFi Hidden Camera Clock Review

Titathink TT531W-N WiFi Hidden Camera Clock Review

The Titathink TT531W-N looks just like a regular alarm clock - a small, matte black cube about 3" square with the time displayed in red LCD. Hidden behind the face of the clock, ...

Simpowel V8 Portable Bluetooth Speaker Review

Simpowel V8 Portable Bluetooth Speaker Review

The Simpowel V8 Portable Bluetooth Speaker is perhaps the most impressive 18650 powered portable speaker currently on the market. In addition to supporting a wide range of sources ...

Rechargeable 18650 Battery Fan Review

Rechargeable 18650 Battery Fan Review

A portable, 18650 battery fan for under $15 This rechargeable 18650 battery fan has four 4-inch blades and runs on one lithium-ion battery (3.7 V). The fan has three settings ...

Bannixing D-72E FM Radio/MP3 Player Speaker Review

Bannixing D-72E FM Radio/MP3 Player Speaker Review

A very compact and portable device that, thanks to the included 3.7 V 18650 lithium-ion battery, provides hours of music per charge. A radio/MP3 player, powered by a removable ...