I don't think it's a matter of being stupid.... I mean sure you can estimate your usage time but if you're 5% off each day it would cause problems in the longrun...

cycco: that maha looks sweet. Its crazy expensive but still cheaper than the smart charger that light & motion sells. would it really fit the L&M battery though? I know they claim it's universal but this connector looks kinda proprietary.

I think I'll just go for one of these L&M solos for now and hope the trickle charger doesn't kill my battery until I can get something better...