Search My Blog

Saturday, March 23, 2013

Cameras - Extending Battery Life - Ultimate rechargable AA batteries for Canon camera by zapmaker

I like this idea. I will have to check the voltage, in my Camera. But, I think it may work in my Camera too...


Ultimate rechargeable AA batteries for Canon camera


rebuild, remake, create

This one begins with my frustration with the poor rechargeable battery performance in most Canon point-and-shoots using two AA size batteries. Canon cameras that use two AA batteries seem to be pretty much useless with normal NiMH rechargeables, as they last for about 10 shots or so, if you are lucky – that’s because they produce only 2.4 V.

Solution: Use a single LiFePO4 3.2V AA cell coupled with a dummy cell.

LiFePO4 is Lithium Iron Phosphate, a safer alternative to the usual Lithium Ion or Lithium Polymer. See

The dummy cell is just a chunk of wood filed down to be cylindrical and the same length as a AA cell. A hole is drilled down the center and a 2″ long wood screw is screwed in. The end of the screw would be ground down, as it is usually too sharp to put into the battery enclosure. One can also put a small amount of crushed aluminum foil over the end of the screw so that it fits nicely in the battery enclosure.

Although LiFePO4 batteries are safer than most Lithium-based batteries but this comes at a price: About half or third the power capacity. Fortunately, because they hold their voltage well over their discharge cycle, this isn't a big problem on cameras. Plus you can carry extra as they are light and you only need one when in the past you needed two!

A few cautions


Cameras - Extending Battery Life

LiFePO4 batteries work much better in a camera than NiMH
Ultimate rechargable AA batteries for Canon camera | zapmaker
Extending battery life while taking time lapse photos
GoPro HD Hero Camera Controller
GoPro User Forum • Index page
LiFePO4 Rechargeable 14505 Cell: 3.2V 600 mAh, 0.6A Rate, 2.22Wh (Button Top, Standard AA size), UL/UN Approved

No comments: