ARB-L14-1600U is a high capacity 14500 Li-ion rechargeable battery with a built-in micro-USB charging port. It also includes a protection circuit in the anode to help prevent short circuits, over charge/discharge and over heating. This battery can quickly be charged without the need for a separate charger. This not only save you money from purchasing a charger, but also convenience of not having to carry around another device. This will work in all of the models that utilize the standard AA battery. This battery is a great rechargeable alternative to alkaline AA battery.
These are AA battery replacements. If they were more than 1.5VDC than they would most assuredly damage the equipment you used them in, you cannot run a 3.7V battery or batteries in electronics built for 1.5V, (or combinations of 1.5V for multiple batteries)
Some of these reviews...yikes!
AA alkaline batteries are 1.5V, so are these, BECAUSE THEY ARE AA BATTERIES.
Excellent AA replacement
Seems to be very well made. Time will tell how it holds up.
I wish this size Li-ion battery were made with a 3.6V output, with the built-in recharger.
I thought I was buying 3.7V Li-Ion batteries but these are only 1.5V.