I would prefer an AAA battery or even better, USB rechargeable. I saw this one on ebay :
http://www.ebay.co.uk/itm/3604681435...84.m1438.l2649
but I don't know if it's any good.
The e-luminator by M-edge seems pretty good too... But I don't understand if it goes only with the m-edge cases or if it can be used with any other cover.
Anyone tried those ?
The lyra light seems interesting, but I can't find it anywhere (I live in Switzerland, so it has to be shipped there).