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!
It’s true: These inferior “D” batteries cost around $25 for a pack of two. These are known as “Energizer E2 Rechargeable Batteries, Size D,” rated at 2500 mAh each. (mAh is a measure of how much power is contained in the battery. It’s sort of like the fuel tank in your car. The bigger the number, the more power the battery delivers.)
By comparison, an Energizer AA battery rated at the exact same capacity — 2500 mAh — costs about THREE dollars!
Found by ECA.
#40 I’m not surprised. If he just found out that technology has gotten more efficient and you only need that size for standard compliance. I give him 20 years to learn that AA can be had cheaper
Well Duh! That’s why these adapters are so popular!
http://starbatteries.com/dsibaadforaa.html
Stop buying cheap ass Energizer’s and get yerself some GP’s, last I saw they had D cells at 9000 mAh!
Standard alkaline batteries are much cheaper than NiCd or NiMH and can apparently be recharged up to 10 times. Go to Hammacher Schlemmer’s website and search for “alkaline battery recharger.”
http://www.hammacher.com
Has anyone here tried recharging alkaline batteries?
ALSO, dont use those CHEAP BATTERY CHARGERS, they ruin your batteries. get a SMART charger and you can make them last YEARS AND YEARS..
#41, ‘dro,
I give him 20 years to learn that AA can be had cheaper
And I give you at least that long before you discover you know nothing about batteries, electronics, or physics. Well, you might know enough to turn your DELL Laptop off if the flames from the battery start scorching your legs.
FYI, sometimes size matters for a reason.
#45 Oh, poor conFused felt stomped over again. That’s what happens when you get into a conversation that you don’t get. I know, you used to know a bit about it but sadly, you’re way too conFused to make anything of what’s being written here.
# 46 pedro, you are just too funny. I am not sure why, but rampant stupidity in one person is just hilarious.
I know, must people feel sorry for you, but; me, I think your hilarious.
Please post more often, please.
#47 said: “I am not sure why, but rampant stupidity in one person is just hilarious.”
Curious, that’s exactly how I feel about your posts. Another proof positive that lefty loons, aside from being detached from reality, love to project their faults & shortcomings onto others.
Keep it up!
#48, ‘dro,
You still have no idea of the difference between a “D” and “AA” sized batteries and why a designer might choose one over the other. Hell, why not just use a “SR44″ to power your little toys?
Energizer NiMH are designed to internally deplet their power over a period of shelf life. The engineer I spoke with said they were designed to be kept on charge. If your going back country camping, better have a solar battery charger or use a different brand. Radio Shack will hold their charge for three months.
Thats a common thing. Even the cheap chinese batteries sold at Harbor Freight are merely AA batteries in a C and D plastic shell. You can feel them just by heft, they weigh as much as a AA.
If they used the whole battery size it would be about 6000Mah.
If you want NiMh batteries that don’t discharge so quickly, look at Sanyo Eneloops.