Yes, anything above 4.8 is good to go. If you look at a battery discharge plot, you will see that the battery will begin at 5.3 - 5.5 volts and drop down to 4.8 - 4.9 within the first, say 10 minutes. The battery will hover around 4.8 for a lllooonnnggg time, but at around 4.6 volts, the plot starts to drop pretty quick. Gotta love that Orbit Microlader.