i think it can hold the data.... cuz it holds a lot of history (my original one still had all the rides from the first day i got it)

i did buy the battery pack for longer rides.... and did test it at home.... didn't charge it... and after a few days... plugged in the pack and rode with it.. it charged and recorded the ride...

i did find AFTER saturday... that people were getting freeze ups and dead garmins when plugging it in to the usb or power supply WHILE ON.... i did that saturday! was at that last 15 miles of my ride and erring on the side of caution... purposely stopped to plug it in... that's when it died... i didn't turn it off first.. just plugged it in.... SO..... what i need to do now... is a retest... but not til after this weekend's ride! but soon enough before next weekend that i can get another replacement if it dies again!

cuz ya... if i can't use the battery charger... then it's kinda no use to me on long rides! so far i've gone 10 hours with it... it's got life of 12 according to garmin.... but i'm sure that's pushing it! i did get the "low battery" signal... but it will go a while after getting that!

the bugs just frustrate me!