Originally Posted by slvoid
Generally batteries also have a tolerance. So if the battery has a 3 hr life and u used it for 2 hours, it's safe to assume it needs a 2/3rds charge. If a full charge takes 9 hours, you can safely set the timer for about 6.5 hours and it might over charge like 5%, which won't kill it, and it'll be full. the danger is if you use one that constantly is set for 9 hours, so you end up overcharging it by 1/3rd instead of like 1/20th.
Problem with a battery pack and getting a dV/dT temperature based charger is, while the thing can detect dV, it can't detect dT w/o a probe. Mmm... probe... *snaps on glove*
exactly
cyccommute....
To elaborate on this a little, the bike light that will come with an "overnight charger" will explain this in the instructions. (about partial charging and the time) . Only they will not have any timer on the charger.
That is why I suggested a timer. It works, and it is being done every day for this kind of a product in this example. It's much better than staying nearby and trying to remember to unplug it when it's done, which is what the light company is actually having you do without the timer. Of course it is not as good as an automatic charger, but it's an improvement. You still need to know your usage time, it's not sophisticated but it works.
slvoid.... I can't believe I even responded to a post that mentions the "glove" and probe in it. AAGGHH !!
