Lithium ion batteries are a great thing to buy if you want to cut your battery costs. They are not a new invention, they were first made in 1912. there are a huge amount to different batteries available from the smallest ones to some really big industrial type. For the amount of power that they are able to store. Most other types of power storage units are much bigger than Lithium ion batteries. The other main batteries that could be used for the same thing are much heavier. Lithium ion batteries high capacity is due to the material that they are made of. Lithium ion batteries do not suffer from a high discharge rate and are very practical for storing energy efficiently as well.
If you are going to be going to the store to check out what is available, it is best to be prepared ahead of time. You should familiarize yourself with common trends for each type of tool you need and then figure out what features are the best fit for your situation. You can save yourself a lot of money by looking at what you need rather than what is the "best".
Your iPod uses a li ion stock ion battery. That is not the round kind found in a flashlight. Rather, it is a light, thin battery that is more powerful than conventional batteries. Using your device causes the battery to drain - simple enough. However, every time you charge your iPod battery, it loses some of its total charge. Over time, it will simply run out of power and you will have to replace the iPod battery with an iPod battery replacement kit.
The PrintStick is a mere 1" x 1.9" x 11" and weighs 1.9 pounds including the thermal paper and cartridge. It prints up to 3 pages per minute on 8.5" wide sheets. A cartridge will print 20 8.5 x 11 inches pages. Power options include AC 120-240, DC 12/24V, and rechargeable Lithium-ion battery.
Avoid buying spares: Unlike wine and cheese, Li batteries do not improve with age. Avoid the temptation to buy spares, unless you use them frequently. Check the manufacture date, and never buy an old Lithium battery stocks, even if on sale.
What are you going to be using the drill for? Let's say that you are planning on building some light furniture and maybe will use the drill on weekends mostly. You probably don't need a super powerful drill with the most expensive battery technology. You could probably get by with a 12 volt drill, no need for hammering action, and you could probably do fine with a NiCad battery as opposed to Lithium Ion. Sure, a Lithium mines Ontario Ion battery would be really nice, and would charge faster, but if you aren't planning on using the drill for continuous hours at a time you could save a few bucks in this department.
To add spice to your inclination for mini size gadgets, there are mini phone receivers in cool color having an operational range up to 10 meters with adjustable volume and built-in 300 mAH rechargeable Lithium battery giving a talk time of over 5.5. Hours. These mini phones are compatible with Nokia, iPhone, Blackberry, Samsung etc. The Bluetooth version V2.0 is compatible with V1.1/1.2 and comes with one USB charging cable, one carrying strap and a manual to consult. Now, you do not have to leave your desk to instruct, chat or gossip.
Recharge the battery to full again and repeat the above steps a few more times. This will allow you to use the battery for a longer time and you can do this no more than once a month. Replacement batteries can be expensive and stretching out their use when you are on a budget can help.