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Tenergy Battery Adapter - Convert AA size to C size Battery (80047)

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For using AA size battery as C size battery.

Features and Specifications:
  • Convert a AA size battery to C size, and make AA battery more useful
  • Capable for all applications using C size battery.
  • Easy to use, just plug and go.
  • Specially designed for high capacity NiMH rechargeable AA battery, and 1.5V 2900mAh AA Primary Lithium battery
  • Size: 26.14 mm (1.029 inches) in diameter x 48.2 mm (1.9 inches) in height empty; 50.3 mm (1.98 inches) in height with AA installed.
  • Manufacturer's Part Number: 80047
Note: When AA installed, slightly longer than standard C. Diameter slightly greater than standard C cell. May not fit all devices.
4 Reviews
75% (3)
25% (1)
0% (0)
0% (0)
0% (0)
By David
Placerville, CA
Good value
January 9, 2020
Thought I'd try these out as an alternative to buying rechargeable C's. I have a couple of dozen rechargeable AA and just seemed to be a cheaper option. Works well.
By Mike
Marysville, WA
Good, but had to lathe down the outer shell a little
November 30, 2015
-- One person said they "just almost fit but were a tiny hair to large" & they had to "removed the labels, cleaned the adhesive off and they fit perfectly." I had to go one step further and that was to put them on a lathe and remove just the tiniest fraction of plastic on it so that they would fit into my Pedi-Paws device. After that they worked great. And you might find that you have insert a penny or round piece of metal to make contact with the spring. I didn't do that, instead I just grabbed the spring (in my device to which I would be inserting the battery into) with a pair of needle-nosed pliers and bent the spring inward more to touch the AA battery in order to make contact.

ProsThe AA battery slides in just right. These will cause you to save money, cuz AA batteries have always been cheap. C's & D's are expensive and this product helps circumvent that useless expense. Would I buy this again? YES, cuz I don't know of elsewhere to buy it cheaper.
ConsYou may have to "remove the labels" & "clean off the adhesive" in order to make them fit. And, if you don't have a lathe like I do, just sand them down if you need to go further.
By Ed
Battery adapter
April 22, 2015
Works well, have used it many times over. Never a problem and well worth the price.
Prosdoes the job, price
By Richard
Work very well
May 26, 2012
I ordered 4 of these, 2 to use and 2 spares for my Maglite ML100 2C light. They just almost fit but were a tiny hair to large...removed the labels, cleaned the adhesive off and they fit perfectly now and come out easily. They hold the AA cells securely with no rattle. Good stuff.
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