1. one 3.2V, has AA, AAA, C, D size 2. low internal resistance, 3. low self-discharge, 4. 1-hour quick charge ... . full battery One Ronda LiFePO4 battery is 2000 dry regular AA, AAA ... AAA/AA Li-ion Battery all in one package Home package RD-9905 (New). One Li-ion battery provide 3.2V voltage ...