The voltage will increase but the amperage will stay the same. For instance: Connect 2 12 volt 100 amp batteries in series and you will have 24 volts at 100 amps.
The amperage is governed by the load that is connected to the battery circuit. Divide that amperage into the 1.6 amp hours and that will give you the endurance of the battery in hours.
Sony estimates that the battery charge time is two to six hours for the standard capacity battery, and three to nine hours for the large capacity battery.
The capacities of batteries are rated in amp hours. The higher the amp hour rating of a battery the longer the device connected to the battery will operate. Depending on what the connected load draw in amps is, will determine how long the connected device will operate.
It depends on what you want to do with the batteries. They can be connected in series to give you a total of 12 VDC. In a series connection a jumper is required between battery one's negative post to battery number two's positive post. If you want to increase the amp hours delivered at 6VDC they can be connected in parallel. In a parallel connection two jumpers are required. Battery one's negative post to battery two's negative post. Likewise the same procedure with the positive posts.
You need 3000 x 24 watt-hours or 72,000 watt-hours. A typical car battery has a capacity of 50 Ah or 600 watt-hours, so you would need 120 car batteries, connected in the right combination of series and parallel to give the right voltage for the inverter.
would discharge in 18 hours
The AH means Amp Hours and is a measure of how much electricity the battery can store. Thus if the 12AH and 15AH batteries were connected to THE SAME device (one after the other) the 15AH battery would run the device for longer than the 12AH battery.
The battery life on the Compaq Presario c700 series laptop doesn't seem to be that good it tends to run for around 2 hours with no recharge, overtime this will worsen as the battery ages.
Canadiantire.com is great for new batteries. I purchased a new battery for my bike recently. They will charge the battery up for you. It will take 4-6 hours. I also recommend a trickle charger for you bike so this does not happen again.
3 to 4 hours if you have a brand new battery but if not up to two hours Modern laptops have Li-ion batteries that will not get overcharged. You can leave the charger connected fro weeks as long as the equipment is not faulty.
Connecting two 12 volt batteries together in series would doubled the amp hours ie 125amp hour +125amp hour = 250amp hour and the voltage stays the same at 12 volts. Connect them in parallel and the voltage will double to 24 volts and the amp hours will stay the same ie 125 amp hours.
Its battery life is 3 to 4 hours.