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I have a tiny Sony DSC-W570 camera. It has a 600mah battery, which does not last long (maybe, enough for 100 pictures or so, depending on outside temps and whether flash is used each time). I have a spare battery as well, but what if I need it to last for the whole day, or even multiple days without a need for an AC socket?

Is there some kind of AC charger on-the-go with built-in battery for 6000-9000mah, which stays in a backpack (for example), where I can stick my smaller battery (through a regular wall charger) and charge it while the backup battery is working? Once drained, switch them, and keep taking pictures.

This way I could increase battery life 10 times. Especially useful for occasions when AC plug is not expected to be available soon (i.e. hiking and similar).

I googled hard before asking this question, and all I found was such chargers with USB connectors, so they are only useful for charging phones (iPhone, Android and the like).

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  • It can't charge over USB? That's the only way my Sony charges, not a W570 though.
    – Paul Cezanne
    Feb 17, 2013 at 23:05
  • @PaulCezanne: I wish it could. Mine uses a regular AC wall charger. So I just remove battery from the camera, insert into a charger and plug it in.
    – Victor Zakharov
    Feb 17, 2013 at 23:34

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Obviously it's a little easier if you can get a USB charger, but no worries- this is still pretty easy. What you are looking for is a "power pack". These are accessory batteries with USB and/or inverters built in. They are generally designed to charge a laptop on the go, so running small(er) battery chargers is even easier.

Here's an older model on Amazon with an inverter. I can find plenty of newer and better models but they appear to be USB-only.

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  • +1. Thanks for a new term, now I know how to call that thing. I found an Energizer XP18000, but it uses laptop-like tips, means you cannot connect a regular AC plug. So I either need to find a tip-type charger for my battery or a tip-to-AC plug adapter (which would be the universal solution, of course), kind of the opposite of what's being sold on a large scale on eBay and similar. Can you suggest anything?
    – Victor Zakharov
    Feb 20, 2013 at 2:22
  • that does 12v and 19v. I bet you can find a cigarette/12V charger for your camera on ebay. The only thing remaining is to find the perfect tip that hooks into the charger. This is a fairly generic charger that includes a "car outlet". Just replace that cord with the XP18000. Here's another option (better option, imho). Again, just get a tip for the XP18000.
    – tedder42
    Feb 20, 2013 at 5:43

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