Question about Digital Cameras

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I just bought a refurbished canon A590 digital 8.0 meg, 4x optical zoom, LCD display screen camera via eBay. after only shooting 40 shots, some of them using flash (like 3 or 4 shots out of 40), i found the camera showed battery used up sign. then, it refused to shoot any more. i checked the voltage of the batteries with my old VOM. the batteries were not used up. the meter read they still had 1.35 out of 1.5 volts. i'm just disappointed that the camera can't use up the rest of the battery charges. 1.35v is to me, nearly still full! is something wrong with the camera? i remember when i had canon A550 digital with the same casing, different color, but of 7.1 meg pixel. the A550 was lost at a cafe. the older camera shot many many pictures B4 it registered low battery charge. but then, after about 7 months, the A550 acted the same as my current one. it started to report low bat charge and it's not even low, shot only fewer shots. i remember re-inserting and messing around with the camera's metal contact tabs for the batteries helped to shoot more shots. is something wrong with the canon model itself? i used both non-rechargable and re-chargeable batteries with the same problems. satoshi nakamoto temple city, calif

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Decentralize the batteries.

Posted on Mar 06, 2014

  • Thorkil Vrge
    Thorkil Vrge Mar 07, 2014

    Buy a new one with your bitcoins. (just kidding, I don't think you are the Bitcoin inventor)

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To properly test a battery it must be under load. This means that it has to be loaded by the device that is using it or an equivelent load resistance, and at the same time the voltage reading taken.

If a battery is tested with without proper loading, then there is no way to know its true output. All batteries have internal resistance. As the battery is depleted its internal resistance goes up.

I found that with chargeable batteries, on the average after about 2 to 3 years they start to require replaceing.


Jerry G.

Posted on Dec 04, 2008

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