| 1/2 AA | AA | | | Nominal cell voltage | 3.7V | 3.7V | | | Typical operating voltage | 3.5 to 3.65V | 3.5 to 3.65V | | | Capacity | 1.0Ah | 2.0Ah | | | 50% capacity achieved | 40mA | 55mA | | | Energy density | 420Wh/kg | 420Wh/kg | | | Capacity loss (typical) | 2% per annum | 2% per annum | | | Operational life (typical) | 10 years | 10 years | | | Operating temperature | –55°C to +70°C | –55°C to +70°C | | | Dimensions | 25.4 x 14.5mm | 50.8 x 14.5mm | | | Weight | 9g | 16g | | | Eternacell part No. | TO48AA-9 | TO68AA-9 | | | Order code | 18-0430 | 18-0435 | | |
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