[Make It Extreme] is working on a battery pack for an e-bike that has some interesting design features. The guts of the pack are pretty much what you’d expect – recovered 18650 lithium-ion cells.

French researchers have announced a prototype of an 18650 sodium-ion battery. If you’ve bought a powerful LED flashlight, a rechargeable battery pack, or a–ahem–stronger than usual LASER ...

In a noteworthy advancement, Group1 has launched the world’s first Potassium-ion battery that has been designed within the widely utilized 18650 cylindrical form factor. “We are excited to ...