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.
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.