On Thursday, May 20, 2021 at 2:57:20 PM UTC-4, wrote:
Am trying to get back into flying with a glider which had a Compaq Aero 1500. Would like to fly before making any changes to instruments. Somehow this PDA doesn't want to wake up any more. Does anybody still have one of these archaic PDAs lying around, and in working order?

Thomas

Amazon has (expensive) replacement batteries still available.
https://www.amazon.com/Replacement-C...1538804&sr=8-1