HOUSTON (KTRK) --If you are looking for a back-up power supply for your mobile devices, here are some options that received good reviews from technology experts:
1. The Nomad Key: http://www.hellonomad.com
2. The Anker PowerCore: http://www.amazon.com
3. Luce Wallet: http://www.ahalife.com
4. Power It Up: http://www.impecca.com
5. RAVPower FileHub Plus: http://www.ravpower.com
Patricia Lopez has tips to boost your smartphone's power with these devices.