What would you do without them? Seriously, if every single battery of every single type were suddenly zapped out of every single thing that it operated, what would any of us do?
When you do something processor intensive, plug in the charger. Not only because this usually triggers a higher performance setting and give you more horse power to play with, but because when the battery is discharged at maximum rate it's more probable to overheat, and heat is a great enemy of Lithium-Ion.
Most of the laptops now a day are equipped with eddy stock-ion batteries. Though there are Nickel-cadmium, Nickel metal hydride, etc, after the invention of Lithium-ion battery, because of its efficiency most of the laptop manufacturers are selling it along with their respective laptops.
At only 6 1/8 inches long and having a weight of 3.4lbs including the battery, you can transport it anyplace. It also arrives with a company bag and tool box, so you can take it anyplace without breaking it.
There are some concerns when it comes to these high powered batteries and how good they are for the environment. But all hybrid batteries are set to be recycled (Toyota has a $200 bounty on each Lithium battery stocks pack), and so unlike some lead batteries from conventional cars, they shouldn't end up in landfills.
Now yes, it depends on how you're using it. But the Apple creators say it will play movies solidly for hours for example before the Lithium mines Ontario iPad battery says feed me".
You cannot use the phone whilst initially charging. You can use the phone whilst charging even during the initial charge with no damage to the battery.
With government incentives, the cost of one of these EV's can be reduced to a more acceptable range, keeping the cost closer to a conventional gas vehicle. There are also reduce maintenance costs with an EV, no oil changes and the electric motors are mostly maintenance free.