How long to charge a batterry

Jon wrote in post #7428544
See above - the light stops blinking at around 90% charge; you need to leave the battery in longer to trickle charge to 100%; the charger won't blow out the battery if you leave it in "too long".

However, Li-Ion batteries live a bit shorter lifespans if they're always pushed to 100% charge. Pulling the battery out of the charger when the light stops blinking is probably a good idea when you know you're not going to use it fully. The power setups for many new laptops allow the user to set recharge to just less than 100% for that reason.

http://www.batteryuniv​ersity.com/parttwo-34.htm has the best information on the web about rechargeable batteries. Isador Buchman is president of a company that produces rechargeable battery analyzers and rechargers, so he knows his stuff and has no interest in any particular battery company.

I charge it 3 hours or usually half an hour after i see the light not blinking.

Because of lithium-ion batteries' innate instability (remember all the recalls of cell phones and laptops years ago because they blew up?), their latest technology in making these safer -- and so the higher cost to us -- means adding more protection circuits. These kind of batteries are unable to absorb overcharging, so trickle charging (and I'm not sure whether the charger even allows this) is not a good thing. Also, because these lithium-ion batteries are not affected with memory problem, a frequent charging is not a problem. So, to be on the safe side, just unplug it when the orange light goes off and recharge it again when the juice runs low.