u/Foreign-Sea-1977

Hello so I have a canon SD750 I got it secondhand so it didn’t come with a charger or anything. Obviously you have to charger the battery itself. For some reason it only lets me take like 5 pics before it just starts flashing the dead battery sign and then will just automatically turn off. I have some charger off Amazon that somewhat fits the battery but not perfectly. Is this just an issue with needing the proper charger for the battery? If so can someone recommend which one or if not what else the issue might be.