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 ...

to be the king of flashlights, but replacing those pesky D-cell batteries is kind of ridiculous in this day and age. So [Travis] decided to upgrade it to make use of the ever-so-common ...

The following summarizes our test results at 900 cycles on 18650 batteries: GEN3 silicon-anode material batteries demonstrate exceptional capacity and durability [1], They Outperform leading ...