I wanted to charge and update my Garmin GPSMap 495 but discovered that both my batteries do not work anymore. Grrr ! The reason is probably because I did not use my GPS for a year. I called the Garmin support service desk in the UK…and they confirmed that this was indeed the reason. They can’t be revived…they’re dead ! The guy on the phone told me I need to charge them at least once a month. I’m very much surprised by his answer, I think there must me other pilots who don’t charge their battery every month. Too bad, now I’m obliged to purchase a new battery. Is anyone reading this having an idea on how to revive my two old batteries ? Any suggestion is welcome