If you have a laptop computer, do not expect your battery to last forever. They have a life span that can be measured mostly by how may times you charge it up. Generally it is about 300 to 500 times if you have a lithium-ion battery.

The Bosch AKE 30 Li feels light in the hands, but the torque packed into that engine is incredible. It oils itself to keep the chain from drying out, and it is easy to check the level of the oil. This is an important feature, because letting the oil run out will damage the chain, guide and workings of the saw in just a small amount of time. Another thing that adds to the easiness of the Bosch AKE 30 Li is ergonomics. The handle is made of a spongy material cobalt ontario copyright that is easy on the hands. This allows you to use the saw from several positions in comfort. This feature on the Bosch AKE 30 Li also will get you through hour after hour of sawing without much damage to your hands and wrists.

1) Makita BTD144 - Class leader for run-time. LXT Lithium-Ion batteries provide 35% longer time between charges. Class leader for impact rate. Delivers up to 3,400 IPM, about 10% higher than average.

So how do they work? Well the all-electric cars both work in a similar way. The petrol/diesel tank is replaced by lots of batteries which provide the electric "fuel". There are three types of batteries lead-acid, nimh and li-lithium ion batterty stocks, with li-ion batteries storing the most energy in the least amount of space.

Why Lithium-ion battery? Because it provides high energy density, runtime, and is light in weight. To run a power-sucking laptop, a battery with high energy density is required. The runtime of a laptop battery is based on what cobalt ontario copyright sort of applications you run. If you run basic applications for writing, reading, copying, chatting, etc, then your laptop battery runtime will be high compared to running a complex application that has a huge number crunching requirement.

If you use a lithium ion battery make sure it doesn't come in contact with other metals, as the ions might be disturbed leading to a defective battery. Jarring a battery by dropping your cell phone can cause damage even if the phone looks unharmed. Extreme weather conditions can also spoil batteries. Heaters, ovens, stoves and other hot items can cause a battery to overheat or melt. As with other electronic equipment, cell phones should never get wet. This directly affects the circuit and the battery and causes them to rust.

Besides helping me discover what cordless drill to buy as a gift, my cordless driver comparison helped me to better understand my tool. I now know how and why to use the clutch settings and am now taking the time to set it correctly.