zkgiant

I recently picked up the Edge 500. The start guide says to charge it up fully first thing...
However, I have heard several tech-minded people (usually as part of a cell phone conversation) tell me that these batteries perform better if you run them completely dead initially.
Does anyone have any thoughts/experiences on this?
Thanks!

lazerzxr

Li Ion batteries should never be run completely dead, they have a protection circuit to prevent that ever happening anyway. There is no benefit in running them dead, the best thing you can do is fully charge before first use. In the old days of Nicad batteries maybe, but these are completely different chemistry. They ship them with a small charge as shelf life is best at 40% charge and room temp. The natural self discharge is long enough that they will not go completley dead on the shelf which would damage them. If Li Ion is allowed to actually genuinely go completely dead through self discharge (the protection circuit will prevent you doing it directly ) they will be permanently damaged, resulting in significant loss of capacity or total inability to accept a charge. google up Li Ion, there are sound chemistry reasons for this

aham23

so these tech minded people know more then a company that spends millions on R&D developing the most popular GPS cycling computers in the world?

follow the Garmin instructions and you will be fine. later.

back4more

+1 these tech minded people are probably thinking about old NiCad batteries that would pick up a memeory and the discharge was a good idea. but with the lithium ion batteries it is no longer necessary.

zkgiant

Good enough for me. Thanks all!!!