Description LR621H is very popular coin/button cell battery often used in wrist watches, small toys, remote keys, and similar small and compact devices. Alkaline battery LR621 nominal voltage is 1.5 volts. LR621H Battery is a direct replacement for SR60, SR621, SB-AG/DG, 280-34, T, V364, D364, 602, S621E, GP364, AG1, AG-1, 364, L621, SG1, LR60, LR620, SW621, GP164, 364X, 364A, AG1/364A, SB-AG, E364 batteries.
