Li-Ion AA or 14500 size battery - 3.7 V 800 mAh 2.96Wh with solder tags

This battery is a Lithium Ion AA sized battery, known as a 14500 because it it 14mm in diameter and 50mm in length.
It has a voltage of 3.7 and a capacity of 800mAh.
The battery has solder tags or tabs at either end so it can be soldered into position with other batteries or directly onto electrical equipment.