Interesting Engineering on MSN3mon
World’s first 18650 Potassium-ion battery debuts, can replace lithium cells
In a noteworthy advancement, Group1 has launched the world’s first Potassium-ion battery that has been designed within the ...
Hackaday10y
Maglite 18650 Battery Conversion
So [Travis] decided to upgrade it to make use of the ever-so-common, 18650 lithium-ion battery. Not looking to purchase any components [Travis] performed this hack using simple recycled household ...