Amazon.com: Customer Reviews: Duracell Rechargeable D Size Batteries - Pack of 2
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Customer Reviews

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Don't be fooled by the hefty size of those DURACELL D RECHARGEABLE BATTERIES. Each so-called 'D battery' is a mostly empty shell with a sub-C cell inside. The capacity of this sub-C cell is just 2200mAh, which is similar to that of a typical AA rechargeable NiMH cell (2000-2500mAh).

To put this capacity number in perspective: a typical alkaline D battery such as Duracell Coppertop is rated 18,000mAh (when driving a light load of 50mA), or 8x higher than the rechargeable counterpart. So let's say a set of alkaline D cells can power your baby swing for a week to 10 days. When you switch to those rechargeable D cells, you need to recharge them once every day.

Instead of those low-capacity Duracell D cells, consider other alternates with higher capacity and/or lower cost. For examples:
Rayovac Platinum Low Self Discharge NiMH D Size Batteries: those provide 1/3 higher capacity (3000mAh) for just half the cost.
Tenergy Centura D Size Low Self-Discharge-LSD NiMH Rechargeable Batteries: those contain nearly 4x the capacity (8000mAh) for about the same cost.

One word of caution: Most inexpensive 'universal' chargers cannot fully recharge batteries with capacity over 3000mAh. So if you want to use D rechargeable batteries with higher capacity, you'll need a charger that specifically says it can handle high capacity batteries. Consider, for example, the Tenergy Advanced Universal Charger TN190.

In the long run, using rechargeable batteries will save you money and is good for the environment. You just need to pick your batteries and chargers wisely, so that you won't over pay for an inferior product such as this one.
44 comments| 53 people found this helpful. Was this review helpful to you?YesNoReport abuse
on November 5, 2012
After receiving the batteries, noticing the old looking packaging I gave Duracell a call. After a 15 min wait I was reassured that THEY HAVE NOT PRODUCED RECHARGEABLE D CELL BATTERIES FOR 5 YEARS. Amazon needs to take this down. The batteries have to all be expired.
44 comments| 26 people found this helpful. Was this review helpful to you?YesNoReport abuse
on March 15, 2012
Be sure to check the expiration date on your batteries when they arrive. I got some supposed to have a 5 year expire date and they only had 3. AMAZON tried to make it "right" and send me some with 4 year expiration dates while allowing me to keep the ones with 3 year expire dates::::-CAVEAT EMPTOR
11 comment| 17 people found this helpful. Was this review helpful to you?YesNoReport abuse
on November 18, 2012
These are AA batteries in a D casing. They will work ... about as long as an AA battery powering a D battery device. And yet they sell them for the same price as a real "D" battery. Your money is better spent on true rechargeable D batteries.
0Comment| 8 people found this helpful. Was this review helpful to you?YesNoReport abuse
on January 10, 2013
At 2200 mAh, the capcity of this battery is 25-50% less than many of the other rechargeable D batteries available. Tenergy's Premium D (at 10,000 mAh) certainly seems to be a much better deal. Duracell used to lead the pack in battery performance and value, but sadly this product just doesn't deliver.
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on February 19, 2013
Please do not buy this product. Instead spend some more to buy Tenergy D Size 10,000mAh.
This seems to me like fake rechargeable batteries. I have also purchased the other brand I mentioned for comparison.
Tenergy last for 3/4 weeks in the device I use while Duracell just 5-6 days.
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on July 13, 2013
Did not pay close attention to liyer's boilerplate. Maybe they said they could substitute these low performance duds for Tenergy D cells. The weight of the cells suggest they have the capacity of an AAA cell. Check the terms of your supplier.
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on October 12, 2013
When a nickel metal hydride battery could easily hold a 10,000 mah charge, why would anyone want to settle for this Duracell D, which holds about a fourth as much. Even Radio Shack's D rechargeable is rated at 5,000 mah, which is a C size capacity. Spend a little more on a set of Tenergy or Powerex D batteries. Don't let a big name fool you.
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on April 24, 2014
I bought these yesterday and paid extra to get them fast. I'm sorry I did because they aren't worth the money. I was disappointed. I barely used them and they are already dead and sitting in the charger. It takes any D battery a long time to recharge but you expect them to last a little while before you have to recharge.
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on April 29, 2016
so far so good. been using, recharging, reusing daily for about 9 months. like new batteries every time so far. the aluminum casing dents and damages easily while inserting and taking out of rechargers, just be careful and take your time and it reduces that negative.
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