AA Battery Replacer for using lithium 14500 batteries

This battery replacer lets you use rechargeable lithium 14500 batteries in place of AA batteries, in devices that use multiple AA batteries.

Lithium 14500 rechargeable batteries are the same size as AA batteries. They operate at 3.7v and are charged to 4.2v. Thus, they are not interchangeable with AA batteries, which have a nominal voltage of 1.5v.

This battery replacer allows you to power devices that use multiple AA batteries with a 14500 lithium battery. You can replace 2 or 3 AA b