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Frequently Bought Together
Technical Details
- The pack contains two AA batteries that are inserted inside hollow D size cells (converters)
- These smart and handy, two-in-one batteries are 100 per cent compatible with all your applications
- Highest capacity hybrio technology means batteries stay charged for longer when not in use
- Rechargeable 1000 times
- Ready to use straight from the pack
Product details
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Product Description
Product Description
These smart and handy two-in-one batteries are 100 per cent compatible with all your applications. The pack contains two AA batteries that are inserted inside hollow D size cells (converters). Ultra range from Uniross replaces 1000 ordinary batteries, saving battery waste/pollution and saving you money (approximately 1p per use over life of the battery). Contains highest capacity hybrio technology, which means batteries stay charged for longer when not in use, making these batteries ideal for use in devices such as digital cameras, remote controls, toys, torches and wireless keyboards/mouse.
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Customer Reviews
Most Helpful Customer Reviews
9 of 9 people found the following review helpful
Amazon Verified Purchase
This is basically a pack of two AA hybrio batteries (2100mAh, 1.2v, NiMH), with two AA-to-D converters.
The hybrio batteries naturally come pre-charged, and hold their charge for much longer than conventional rechargeables.
The converters are plastic barrels which simply expand the radius of the AA battery. This is quite neat, and the converters themselves are adequately strong, however the arrangement is quite limited. The "quick and easy" aspect of the converter is also its downfall.
The size of the 'converted' terminals is the major issue. The top contact (positive end) is reduced in area compared to an actual D battery, and doubles as a button for 'ejecting' the AA battery from the barrel. The bottom contact (negative end) is basically the unmodified foot of the AA battery. Thus if you want to use this converted AA battery in appliances which use a spring to push against the negative end of your row of D batteries, and the spring is wider than an AA battery at the narrowest point, then you're stuffed.
I for example bought these for use with a 3D Maglite torch, and it simply won't work. I am having to buy a box of duracells instead. Sadly I cannot think of anything else in the house that will use D cells, but I have at least gained another four AA hybrios for my photo equipment. I'll just not think about how much more I paid for these ones than for the normal 4xAA packs...
So yeah, in short "exercise caution". Before ordering, compare the terminals of an AA battery to the contacts in the device you are intending to power with these. If it looks like it will work, go for it - hybrios are ace. Otherwise... avoid!
The hybrio batteries naturally come pre-charged, and hold their charge for much longer than conventional rechargeables.
The converters are plastic barrels which simply expand the radius of the AA battery. This is quite neat, and the converters themselves are adequately strong, however the arrangement is quite limited. The "quick and easy" aspect of the converter is also its downfall.
The size of the 'converted' terminals is the major issue. The top contact (positive end) is reduced in area compared to an actual D battery, and doubles as a button for 'ejecting' the AA battery from the barrel. The bottom contact (negative end) is basically the unmodified foot of the AA battery. Thus if you want to use this converted AA battery in appliances which use a spring to push against the negative end of your row of D batteries, and the spring is wider than an AA battery at the narrowest point, then you're stuffed.
I for example bought these for use with a 3D Maglite torch, and it simply won't work. I am having to buy a box of duracells instead. Sadly I cannot think of anything else in the house that will use D cells, but I have at least gained another four AA hybrios for my photo equipment. I'll just not think about how much more I paid for these ones than for the normal 4xAA packs...
So yeah, in short "exercise caution". Before ordering, compare the terminals of an AA battery to the contacts in the device you are intending to power with these. If it looks like it will work, go for it - hybrios are ace. Otherwise... avoid!
3 of 3 people found the following review helpful
As already pointed out, the converters simply expand the radius of one AA battery using a plastic frame, and there's a spring at the top in an attempt to make the positive terminal fit in the battery compartment. The bottom of the AA battery sticks out of the frame at the bottom to make the negative contact. The AA fits loosely into the frame, which might present problems. Thus each converter effectively converts just one AA battery into something which might work where a D battery would. It seems likely that the charge might go down quite rapidly though compared with a regular D type battery, but this would be offset by the low rate of discharge for this type of battery compared with other rechargeables, such as NiMH. Because the AA batteries are loose, they may require some fiddling around to get them in place, and even then they may not work. It's a pity that at the moment there don't seem to be any low discharge C or D rechargeable batteries available, as they would surely be a better product. For functional reasons it may be better to stick with non rechargeable batteries at present, though whether that could considered economic is questionable. Having a torch which doesn't work when you need it is probably not good, even if it might be a cheap option - though this can happen with regular batteries as well as rechargeables. Green enthusiasts may be more inclined to these batteries than others.
Like other reviewers I bought these specifically for gadgets such as torches which take large batteries. I do have some rechargeable D batteries, but almost inevitably, when one wants to use a torch the batteries have run down. I have been building up a collection of low discharge batteries, such as Eneloop and Hybrio, and have generally been very pleased with them. If you want just the batteries these packs are an expensive way of getting them. The plastic D frames will work out at approximately 50p-£1 depending on the supplier. There is a similar product for C type batteries.
I'd recommend buying these in small quantities first, to see if they are suitable for your application.
Like other reviewers I bought these specifically for gadgets such as torches which take large batteries. I do have some rechargeable D batteries, but almost inevitably, when one wants to use a torch the batteries have run down. I have been building up a collection of low discharge batteries, such as Eneloop and Hybrio, and have generally been very pleased with them. If you want just the batteries these packs are an expensive way of getting them. The plastic D frames will work out at approximately 50p-£1 depending on the supplier. There is a similar product for C type batteries.
I'd recommend buying these in small quantities first, to see if they are suitable for your application.
Amazon Verified Purchase
I bought two pairs of these. Although one pair was fine, the other pair was flat on arrival - 0.6v on each cell. Nevertheless they charged up fine overnight, which I checked by leaving them in a switched on torch for several hours. It was not a problem for me, but it would have been a problem for somebody needing to use their new purchase urgently.
Most Recent Customer Reviews
As described
Good set of batteries - fits perfectly fine into the standard slot for D size battery. Quite clever way to re-use your standard AAA rechargeable
Published 3 months ago by meekao
Superb
Don't think twice, buy it
Does what it says on the tin, have been using mine for years now !
Does what it says on the tin, have been using mine for years now !
Published 5 months ago by miagod80
Uniross 2 x D Converters with 2 x AA 2100mAh Hybrio rechargeable...
These D converters are a great piece of kit, they have revived a torch which would of been stuck in the cupboard doing nothing as I like many other's do not have D cell... Read more
Published on 26 April 2010 by Skowey
Great stuff!!
I've had these for a while now, love the batteries, hold their charge for ages when stored, and the adapters will take any AA battery, and although makes the battery a little bit... Read more
Published on 12 April 2010 by Mr. W. Waller
Excellent batteries that hold their charge.
I decided to buy this item instead of rechargeable D type batteries as I knew that I would use the included AA batteries a lot more often than D ones and at least the convertors... Read more
Published on 17 Jun 2009 by Reinvent
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