Battery Capacity Comparison Table

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Battery Capacity Comparison Table

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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

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