08-08-2011, 09:44 PM
(08-08-2011, 12:09 PM)AlanBeckett Wrote: If they're new why do you need to charge them? They may already be fully charged.
It's normal for a long charge - 14 hours - to use 0.1C, that is 10% of the capacity, so in your case 300mA.
The USB Port can potentially supply 500mA, but that shouldn't do any harm.
When you overcharge them they get very hot, although they should survive OK. Check the terminal voltage. If it's at 1.4 volts or slightly above it's full.
Alan
These batteries came by post, as far as I know you are not allowed to send fully charged batteries through the post and as it happened these batteries were not charged. I think the problem was the mini charger it didn't appear to have a lot of regulation, I've now put them into a wallwart type charger and they seem to be charging nicely with a gradual voltage rise and not overheating ............
