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Yo,
I bought one of these USB battery packs for charging my phone etc, and managed to kill it in a week by shorting the terminals or something.
So I have 2x li-ion batts in this thing, 3.7v & 2500mAh each.
Do any of you clever light makers or similar know of a PCB that will charge these from USB, and output USB?
Thanks
bump
Not off the top of my head
/googles
Ah, this might do..
[url] http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=27_56&products_id=160 [/url]
However I'd be slightly concerned about what state the batteries are in. Generally speaking the sort of device you originally had has an over charge and over discharge circuit, so shorting the contacts should just disconnect the battery from the load and reconnect it when the short has been removed. If however you've been experimenting, taken the batteries out and accidently shorted them, then they're probably stuffed.
/Edit
Scrap the above PCB suggestion, it won't give you USB out.
Hey thamks for that, it could work and that's a very handy site too.
I happened upon something like this today in a gadget shop
http://usb.brando.com/multi-cellular-batteries-usb-tiny-charger_p651c35d15.html
[img] 
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which I will do something with. I reckon I will have to use a seperate circuit for the output whatever I use.