I have 8 duracell rechargeables that are 15 minute charging time. They work just as goode as disposables. I have saved a ton of mula. Ask Bernie, when he returns, about his battery system. I started using his technique and now, I am never without charged batteries.. I can't say the same for myself.. I need charging every 4 hours. Usually Fuddruckers will do... Mike ----- Original Message ----- From: Andrew Senger To: geocaching@xxxxxxxxxxxxx Sent: Saturday, July 14, 2007 10:17 AM Subject: [GeoStL] Rechargeable Batteries Do any of you use rechargeable batteries in your GPSr? If so, how well do they work in relation to "throw away" types? I bought some rechargeables the other day and will probably use them for the GPSr and the digital camera. My idea is to keep track of how often I charge them and how many charges they last to compare their price to normal batteries. Thanks! Andrew (yawetag)