Thanks for your thoughts Peter. I thought my thread might have brought a few more replies considering it was a sought after model when first marketed along with the 396 and 496. When I first returned it to Transair a few years ago, their comment was "O not another one". So its also been back to Garmin direct as well. Works fine on a new battery and charges. 2 months later-Zilch, Nada. Pity a lead acid jelly battery couldn`t be made that small.