This is a VARTA Industrial alkaline AA (LR6) battery, VARTA type 4006, a single primary (non-rechargeable) cell from VARTA's Industrial range, which is sold in bulk packaging rather than retail blister cards for businesses that go through batteries in quantity. Typical uses include wireless microphone handhelds and bodypacks, remote controls, clocks, torches, test gear, toys and general portable electronics. Venues, rental companies and AV crews often buy industrial-grade cells by the box so that transmitters and packs can be fitted with fresh batteries before every show. VARTA's data sheet lists the LR6 cell as a zinc/manganese-dioxide alkaline chemistry with a nominal 1.5 V, a typical capacity of 2900 mAh (high-resistance discharge), a weight of about 24 g, a volume of 7.62 cm³, a permissible temperature range of -10 to +50 °C and a coded shelf life of 5 years. Maximum dimensions are 14.5 mm diameter x 50.5 mm (max). AV Distribution sells this item in multiples of 10, so the listed price is per cell but orders must be placed in quantities of 10. As with any alkaline cell, do not attempt to recharge it and recycle used cells responsibly.