For an iPod Nano-video 3rd generation, it should take twenty-four hours to drain with playing only music, and five hours to drain with playing video.
That battery model will give about 1.5 hours of battery life before needing to be recharged.
No they don't they must be charged before they can be used
It is always good to charge a battery to its full capacity before it is fully charged.
My advice is to charge the battery with a battery charger before starting the engine. You will be putting a heavy load on the alternator if you allow it to charge a dead battery. This could damage the alternator.
No, you do not have to have a 100% battery to download music.
i normally do, before recharging
The reason why you have to charge a new phone for 8 hours before you first use it is to allow the battery to completely charge. This is what the manufacturers recommend. It usually does not take 8 hours for the battery to be full so you can unplug the charger when it is fully charged.
the average time it takes for most rc racing boats before needing a recharge is about 30 mins depending on how long you charged it before you used it. http://www.bananahobby.com/rc-watercrafts-high-speed-racing-boats.html
Rechargeable batteries normally have to be charged fully before first use.
Sony claims that its standard battery for the VAIO VGN-P530H/Q provides 4 continuous hours of running time before needing a recharge.
Either your ignition is broken, or (& this may sound really stupid) except for I've done it before. Make sure your car is completely in park. If not that, jiggle the steering wheel a little.
the battery may be getting old or you somehow overcharged it and destroyed the battery, or you used it before you charged it when you first got it. If you use it before charging it when you first open it, you could severely shorten battery life. Not just for a DS or whatever Nintendo thing you mean, but for anything chargeable.