Mine does the same, ---- sometimes! I've left it for 10days, turn on with charger, and it shows full charge, next morning put it on while rigging, by the time I'm on the water it's down to 20%. I suspect the battery, it's getting old now. But I don't want to spend money on this one, the buckle is broken and the adjust button rusted off. I'm just hoping Julien can start making big motions again. Other wise I may have to dust off the ancient mobile and use gpslogit for on water feedback

Could be it's done irs last session..
I've always thought it was a stupid design in that you can't delete the last session unless it connects to the utility..

Yes, replacing battery is tricky, the buzzer is between the two halves of the case, and is easy to break a wire, (I've just left mine off, can't hear it anyway). The seal is a bit fiddly to get back on, And the soldering needs a fine iron a steady hand and good eyesight. But would be fairly easy, for a keen amateur, or say a phone repair tech.

sboardcrazy said..
I might get a quote from a phone repair guy to replace the battery.
Any idea what sort they use?

Just use your Motion mini, Just better in every way!

sboardcrazy said..
I might get a quote from a phone repair guy to replace the battery.
Any idea what sort they use?

Somebody else has been through this, and it's hard to get the exact battery, but he came up with this one that fits

That's 602025 for the new. 552425 for the old.
The new is 6mm thick 20mm wide and 25mm long.
The old is 5.5mm thick 24mm wide and 25mm long.

Here's a quick search
www.ebay.com.au/itm/133597366146?chn=ps&norover=1&mkevt=1&mkrid=705-159824-816807-4&mkcid=2&itemid=133597366146&targetid=4584551175747623&device=c&mktype=&googleloc=&poi=&campaignid=398426035&mkgroupid=1295224947604288&rlsatarget=pla-4584551175747623&abcId=9300410&merchantid=136820&msclkid=4dd1d68ded681c80c546b6aaa3045a98