Yep, you don’t have to use the discharge, it’s just an option.
I picked one of these up for $40 from Electus Distributions – Jaycar’s wholesale arm. If you’ve got an ABN you can buy through them at better than retail prices, but if you can’t get to silverwater, then you’d have to pay for shipping. 🙂 You could always get some batteries and other stuff while you were at it. hehe
It seems to work well enough. It charges each battery individually which is a plus over my other charger. It is slow though. I have it on while I’m at work and it can take over 2 days (about 10 hours per day) to charge 900mAh AAAs! And the cells weren’t even fully discharged!
It does get very warm though – almost as hot as charging them at 1Amp on my other charger, but then it would take just over 1 hour.
Cheers, Graham.