Maglite’s used(?) 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 ...

If you've owned a laptop for a few years, you've no doubt encountered the problem that the battery eventually loses its ability to hold a charge. Generally what happens is that one or more of the ...

Lithium-ion cells deliver very high energy densities compared to many other battery technologies, but they bring with them a danger of fire or explosion if they are misused. We’re mostly aware of the ...

Tesla’s battery supplier Panasonic is considering switching 18650 battery cell production lines, which currently supply cells for Tesla’s Model S and Model X, to 2170 cell production, according to a ...

Chicago-headquartered NanoGraf Technologies, which claims it has enabled the highest energy-density cylindrical 18650 Lithium-ion cell in the world, today announced that its battery has achieved a new ...

The vast majority of our portable electronic gadgets, and the new wave of electric transportation, are powered by lithium batteries. Texas-based startup Group1 has developed a more sustainable ...

The Consumer Product Safety Commission is warning customers against purchasing loose lithium-ion battery cells that can be used for vapes, flashlights and other small devices. In particular, the CPSC ...

Since the late 1990s, the 18650 lithium-ion rechargeable cell has been a common standard cell used in many devices and a host of applications. Like the ubiquitous AA, AAA, C, and D alkaline primary ...

I salvaged a large batch of 18650 cells from old laptop batteries and needed a way to figure out which ones were still worth using. In this video I walk through a 4-channel 18650 charger, discharger, ...