I thought about that but keeping a battery in the wallet, doesn't that get really hot? Same with the one in the car. I was just thinking about long term damage to the batteries from heat/cold extremes. Heat/cold in the car may not be an issue depending on the weather and where you live though. Just that added thickness to my wallet would be horribly uncomfortable in my back pocket though.I went the other way; bought 2 spare batteries for a little less than a Zerolemon. Keep one in my wallet and one in the car and the phone size stays the same. I can use any case and my car and office dock still work. I can still carry the phone in my pocket or use my Seidio holster and it takes less than 10 seconds to switch batteries.
I thought about that but keeping a battery in the wallet, doesn't that get really hot? Same with the one in the car. I was just thinking about long term damage to the batteries from heat/cold extremes. Heat/cold in the car may not be an issue depending on the weather and where you live though. Just that added thickness to my wallet would be horribly uncomfortable in my back pocket though.