Yea, having a wireless telnet client in the early 2000's was a really cool trick. The built-in rechargable NiMH batteries in the Cybiko Extreme's are natorious

Yea, having a wireless telnet client in the early 2000's was a really cool trick. The built-in rechargable NiMH batteries in the Cybiko Extreme's are natoriously bad. Mine were very old new-in-box stock when I got them and already had a short life-span. They can sometimes be kicked back to life with a voltage spike. Disconnect the battiery and hit it with a 12V supply (or higher) at a couple amps of current and it will break-up the crystals that form in the battery. Do that for a few minutes. If it works the batteries will immediately start taking a charge again. However after a few months the crystals will reform and you are back to square one. I finally just put a four cell AA battery pack on the back of mine and wired it into the unit.