On top of a great battery, the Makita BDF452HW has a 2-speed transmission and a 4-pole motor that operates at up to 450 in. lbs. of max torque and 285 in. lbs. of PTI torque. This ensures you will have plenty of power for almost any job you need to accomplish. All you need to do is switch between the two transmission settings and you're good lithium stock to go.
OLithium Polymer - The latest and greatest being used in cell phones. They have a higher power density than the other types. This allows manufacturers to provide either a thinner or lighter battery, or some combination of both. They can be hard to find. They are available for several Samsung phones. Lithium mines Ontario Polymer batteries do not suffer from the poor memory effect and can be recharged anytime.
On top of this wireless fun your iPad comes with Bluetooth 2.1 + EDR (ahh yes, rubs of chin all round, what the heck is all this stuff anyway?) the upshot of which is that you can connect it to accessories like wireless headsets, headphones or the Apple Wireless Keyboard if that happens to particularly float your boat.
Li-ion Batteries last longer and charge quickly. A Li-ion Lithium battery stocks and a quick charger make it possible to work all day with a cordless drill without stopping.
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.
So, it's easy to see how a lithium 18650 battery, and Li-ion cells in general, have found there way into the homes (and hands) of many modern consumers.