Ultralight 1.5V Alkaline Button Cell Battery LR521
The LR521 is a type of disposable primary button cell with an ultra-light design. It uses manganese dioxide as the anode, Zinc as the cathode, and potassium hydroxide as electrolyte. As the materials say
The LR521 is a type of disposable primary button cell with an ultra-light design. It uses manganese dioxide as the anode, Zinc as the cathode, and potassium hydroxide as electrolyte. As the materials say, LR521 is one of the alkaline batteries, which comes in the shape of a squat cylinder and has a voltage of 1.5 volts. With lots of power in a small pack, LR521 is typically used to power watches.
Alkaline manganese button cell
Nominal voltage (V)
Cut-off voltage (V)
Rated capacity (mAh)
Average weight (g)
Bulk shrink or blister card
4.1 year warranty
Founded in 2007, WinPow is an ISO9001 and BSCI-certified battery manufacturer headquartered in Huizhou, Guangdong. Initially known as one of the largest 23A/27A series battery suppliers in China, WinPow has now accumulated a great wealth of experience in battery R&D and production and greatly broadened its product portfolio from a single one series to eight product lines.