If you were to look at most of your high end electrical devices such as laptop, personal digital assistant, cell phone, MP3 player etc, most probably it will be powered by a lithium based battery.

Lead Acid - One of the most commons usage for this type is for laptop computers. It is long lasting durable and rechargeable but unfortunately it is heavy and full of lead lithium battery stocks P
 

Apple has an official out-of-warranty battery replacement program for shipping in the United States(see Europe Lithium mines Ontario and copyright pricing The policy requires that you send in your iPod any model and Apple will change the battery and ship it to you for plus handling and shipping. Technically, Apple in reality exchanges your whole unit with an equivalent original model or factory-refurbished model in a brand new cover, with its own 90-day service warranty; if it was previously engraved by Apple, it will be engraved again.

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.

This cordless driver comparison showed that Lithium-ion batteries hold a charge a lot longer than a nicad battery. A fully charged Lithium-ion batteries can hold a charge for up to a year. My cordless driver comparison did clarify to me that when comparing drivers its important to compare cordless drivers with similar power. Power wise a 12 volt Nicad battery has the same power as a 12 volt Lithium battery stocks ion battery and a 18 volt nicad battery has the same power as a 18 volt Li-ion battery. So don't expect the same torque found in a 18 volt nicad cordless drver from a new 12 volt li-ion cordless driver.

The next thing you can worry about is the power of the gun; the FPS. Your AEG's FPS is primarily determined by the strength of the spring. Most springs are recorded in meters. So the m100 spring for example is 100 meters per second (328 feet per second). The stronger the spring, the more power your gun will pack. Always remember when upgrading the FPS to make sure the other parts of the gun and gearbox can handle a stronger spring.

Next on the list is our gas weed wackers little brother the cordless weed wacker. Cordless weed wackers are great for smaller yards and the environmentally friendly. When looking at cordless string trimmers, you can't miss out on WORX. WORX products are known for being easy to use and operate by home owners. Without any hassle of using gas and oil, the WORX GT WG151 18-Volt Cordless Electric Lithium-Ion String Trimmer/Edger. This tool is easy to use right out the box, and does excellent finish work on trimming your yard. Also the built in edger capability makes this the best cordless weed eater of 2010.