Batteries and How They Work
		Battery amp-hour, watt-hour and C rating tutorial
		BATTERY CAPACITY AND EFFICIENCY
		How To Test Standard AA, AAA, D, C, and 9V Batteries with a Multimeter
		9V Alkaline Battery Construction
		How to choose a battery: A battery chemistry tutorial
		Power Consumption / Battery Capacity
		How a lead-acid battery works
		Volt LED Torch!
		9V Battery Explosion