Hi guys, I have 2 batteries, 2000 mah IMR but not enough for me. Today, one last 7 hours before the other one is fully charged. It take 14 hours to charge each. I ordered 2 more from fasttech, but I figured that it'll take quite sometimes to get here. I found this from frys for real cheap, but I don't know much about battery, quality and safty. Can you pro tell me if this one is safe to use? First choice: FRYS.com | House Of Batteries. Second choice: FRYS.com | Tenergy