I am quite happy with the ultra-slim extra battery for the HP 2710p that provides me an additional 5 hours of battery life when I need it but for devices I’ve used in the past without that option I have gotten good use out of an external battery. A jkOnTheRun reader emailed me about such a battery and couldn’t say enough good things about it so I thought I’d pass it on to everyone. The Electrovaya PowerPad 95 is a 2 pound external battery that provides 6-9 hours of additional battery power for laptops for $200. The PowerPad 95 will reach an 80% charge in 2.5 hours according to Electrovaya which means it would be a nice companion for business trips. There is an LCD battery gauge so you can tell how much juice is left at any given time and there are two USB ports for charging cell phones and the like. Pretty nice solution it appears to me. Electrovaya is famous for their advanced battery technology and they have a whole line of external batteries that offer up to 22 hours of power for laptops. That’s a pretty outstanding battery solution but that one will set you back $600 so you’d need to be heading out to Antarctica for a while to make that one worthwhile.