Rechargeable Batteries: Great for the environment short on juice.
Mike Adams writing over at News Target investigates just why it appears rechargeable Energizer "D" batteries are manufactured with lower capacities than their "throw away" alternatives. 'Why are Energizer "D" batteries so weak? To find out the answer, I decided to take one apart and see what was inside. As this picture reveals, inside the "D" battery is a much smaller battery! The Energizer "D" battery is actually just a cheap plastic shell surrounding a much smaller, low-capacity battery similar in size and capacity to an "AA" battery (2500 mAh). This explains why the Energizer "D" rechargeable battery has such low power capacity to begin with. The company doesn't even try to make it a high-capacity "D" battery, it seems. They're filling part of the inside of the battery body with nothing more than cheap plastic and useless air. And how much does Energizer charge for this "D" battery? More than $12 each!'