Sujoy,
I am not sure... Charger indicates that the battery is fully charged but it's too quick. My charger out put is 900mAH, so it's supposed to take to 2+ hrs to fully charge but ever since I bought these batteries it took around 100 min. I thought the batteries won't drain all the way to 0% (like inverter batteries) so no doubts then...
Yeah, I started doing that (conditioning - charging and discharging). You may have used AA batteries in your previous cameras. Have you ever noticed that your battery is getting charged quicker than normal?