Battery Capacity Comparison Table
Selecting the right battery for the right application is a common choice. Trade offs in battery selection are cost, size and capacity, and internal resistance. Battery capacity is rated in Amp-hours. If you know how many Amps the device will draw, you can figure out how long the battery will last by dividing the capacity by the current draw. If a battery has a capacity of .5 Amp hours, that means it can drive .1 amps to a load for 5 hours or conversely .5 amps for 1 hour, until the voltage drops to a specified threshold, which is typically about half the rated voltage.
The following table is a comparison between various common battery types.
| Type | Description | Voltage | Capacity | Manufacturer | Cost - Qty 1000 |
Diameter (mm) |
Height (mm) |
| AAA | Cylinder Carbon Zinc | 1.5 | 540mAh | Energizer | $0.19 | 10.49 | 44.50 |
| AA | Cylinder Carbon Zinc | 1.5 | 1100mAh | Energizer | $0.12 | 14.50 | 50.50 |
| C | Cylinder Carbon Zinc | 1.5 | 3800mAh | Energizer | $0.22 | 26.19 | 50 |
| D | Cylinder Carbon Zinc | 1.5 | 8000mAh | Energizer | $0.25 | 34.01 | 61.49 |
| N | Cylinder Carbon Zinc | 1.5 | 250mAh | Energizer | $0.13 | 11.99 | 30.20 |
| CR1220 | Coin Lithium | 3 | 40mAh | Energizer | $0.19 | 12.5 | 2.00 |
| CR2032 | Coin Lithium | 3 | 225mAh | Energizer | $0.17 | 20 | 3.20 |
| CR2450 | Coin Lithium | 3 | 600mAh | Energizer | $0.72 | 24.5 | 6.9 |
| 9V | Square Carbon Zinc | 9 | 400mAh | Energizer | $0.61 | 26.49x17.50 | 48.09 |
| A23 | Cylinder Alkaline | 12 | 40mAh | Energizer | $0.44 | 10.3 | 28.5 |
| LR44 | Alkaline Button | 1.5 | 150mAh | Energizer | $0.06 | 11.4 | 5.2 |
| LR44 | Silver Oxide Button | 1.5 | 200mAh | Energizer | $0.70 | 11.4 | 5.2 |
