re 66i battery

I accidentally left my Garmin 66i on after use and the battery completely drained and stayed flat for 5 days. Will this have permanently damaged the battery? I'm guessing the battery voltage is not actually dropping to zero but just to some minimum operating voltage?

0 twolpert over 1 year ago

"Typically", smart devices protect themselves against battery damage on both ends - overcharging and running to full discharge. Most such devices stop drawing battery power when the battery voltage drops to a level safely above the damage threshold.

That said, I don't know for sure that the 66i does this. Anecdotally, I have discharged the device to the point where it shuts down. As far as I can tell, there was no significant decrease in run time after recharging.

You'll have to open a support ticket to find out for sure.

0 trig_01 over 1 year ago in reply to twolpert

Thanks twolpert, yes I'd like to think that's the case after all it wouldn't be that uncommon to run it completely flat in the field (if one didn't have a power bank or some other means of charging with them). I guess for me it was just the extended period I left it flat. I read somewhere it best to recharge within 24hrs of running flat for optimum battery performance. I'll see how it performs battery wise on my next trip.