EVOPower Black 2 USB Port Compact External Portable Rechargeable Emergency Backup Battery Charger (5000mAh) - Includes USB Charging Cable - for Sony Walkman 4GB 8GB Video MP3 Player E353 E354 / Walkman 8GB 16GB Video MP3 Player E344 E345 / Walkman 8GB 16GB Video MP3 Player S544 S545 / Walkman 16GB 32GB Video MP3 Player X1051 X1061
This Battery Backup is exactly what was needed for my EVO phone. I have the 3500 mAh battery installed in the phone, and this charged it from 26% in less than 2 hours. Even better, it still had enough charge left to keep my Power Hungry EVO usable for 3 full days of use without a recharge. My mini-cam accepts a 32gig memcard, but the  battery will only last long enough for 2gig recording time. This 5500mAh battery keeps my camera recording for hours instead of minutes. A must have for recording the Kids sch