1. Batteries Batteries are a BIG deal… as nearly everything runs on them. Why is it that devices that run on batteries ALWAYS die when you need them the most? How many of you have had a cell phone call dropped because your battery died? How boring can a lesson get, right? WRONG!

2. Keeping Your Device Going A little humor… –even this young kid understands the importance of keeping the camera running...with an external battery. –This is not me…but a picture from: http://michaelbluejay.com/batteries/ http://michaelbluejay.com/batteries/

3. Usages Entertainment –Microphones –Headphones –Remotes (TV, Toys) Work –Cell Phones –Cordless power tools (drills, sanders, leaf blowers) Other –Hybrid Cars –Battery Back Up Systems – Computers, Hospitals, etc. What other devices can you think of that use batteries?

4. Built In vs. Removable Battery Pack Which is better? Which would you buy? Why? A B 15-20 Minutes More Power 10-15 Minutes Less Power

5. Replacing an INTERNAL B&D tool battery.

6. Battery System

7. The flipside of the iPad's seemingly inexhaustible battery life is that the length of time it takes to recharge it is best measured in epochs. Turns out, some methods work better than others.

8. One last thing about iPad battery management: It's worth taking a peek at Apple's recommendations for optimal iPad battery lifespan. Of note, you ought to take your iPad through a full recharge cycle once a month. That means running it down completely, then charging it to 100 percent. It's actually the first part that's hardest, as we found out while trying to test all of these charging techniques. [Giz iPad Coverage]Apple's recommendationsGiz iPad Coverage

9. Why so many types? Main types of batteries: General Purpose –"Heavy Duty" is a big misnomer; these are really "puny duty". General Purpose are very susceptible to leaking. Sealed Lead Acid (SLA) –Used in UPS (battery backups for computers and TVs…the only true source of surge protection Alkaline –one time use Mercury –used in watches NiCd –original rechargeable, had a memory effect if you charged while the battery was not completely drained. NiMh –longer lasting, NO significant memory effect. LiON and LiON Polymer –Found in most current cell phones and laptop because they do not mind being "topped off" (charged daily)...i.e. NO significant memory effect. But you should still allow the battery to show some signs of discharge BEFORE recharging for maximum life of the battery. But it is not necessary to deplete the battery...in fact, LiONs do NOT like to be deeply discharged. Lithium –Newest latest greatest. Longer run time with less weight...great for cordless mice and other compact devices.

10. All batteries can leak, cheap ones even more so

11. Battery Life

12. Battery

13. Why so many types? Main difference in all the is the way the battery stores and distributes it’s energy and also how it discharges over time when not used. Standard disposable Alkalines, for example, have a long shelf life…but start to loose power right away. They start with 1.5v, put drop to below 1.2 VERY quickly. Most rechargeable batteries (NiCD and NiMH) hold more power longer…but loose power when not being used. They start at 1.25v…but keep 1.2v for a longer period of time.

14. Self Discharge All batteries loose some power sitting around…others loose more…as much as 1-2% per day. –So, after 30 days of non-use…you could have less than 50% capacity…which may not be enough to even power up the device.

15. Disadvantages of Rechargeables Do not like to be completely discharge (esp. LiON) Cost more initially…usually need two sets to cycle the batteries. Tip: Carry a set of Lithium's as a backup to your rechargeable. Takes time to recharge They die suddenly…most batteries that do not have smart chips inside of them and so do not REALLY know how much is remaining. 1-2% self discharge PER day…especially NiMh Require a great deal of “management” Require electricity and a charger to recharge Very little compatibility between chargers and types of battery. They can blow up…cause fires...here is a battery that blew up at my house...and very fortunately did not cause a fire...

16. Disadvantages or Rechargeables

17. Disadvantages of Rechargeables

18. And, not all batteries are created equal OEM (Original Equipment from the Manufacture) –More expensive –Usually less power than the competition Replacement (often OFF name) batteries made to spec (specifications of the manufacture) –A LOT less expensive –Push more power to boost the claim to a competitive edge –RISKY, RISKY, RISKY

19. OEM vs. Generic

20. Advantages MUCH less expensive over time Provide longer run time at a higher power rating in most cases - Cons seem to outweigh the Pros, huh? –There is good news…at the end…at least with AA and AAA

21. Battery Ratings Rechargeable batteries are rated by how much power they will deliver over a period of time, called…Amperes per Hours. –Except most consumer batteries you are familiar with are rated in milliamps per hour, mAh. The HIGHER the mAh, the better...but not all batteries are created equal. –Two batteries of the same rating (even of the same brand) may perform completely different. –Many devices need a certain voltage to power up the device. –And, the more power they start with, the quicker they loose the power.

22. The Good News In the last 5 years, a brand new rechargeable battery has emerged called Eneloop. This battery’s claim to fame is reduced self discharge. Normal NIMH batteries are pretty much useless after about 2 weeks. The Eneloop batteries are designed to be useful straight off the shelf at the store...and capable of sitting on a shelf for months with 90% of their capacity after 6 months.

24. Eneloop I have been using these batteries for about 4 years. As with anything new, there are concerns. BUT, this has been one of the ONLY batteries that will power up many of the newest devices and is proven to maintain a charge for the many weeks I have stored them and then relied on them for power. Other companies are now making these type of low self discharge, “Ready to Use” straight off the shelf, like Kodak LSD from Wal-Mart. Do NOT USE THEM…they are NOT as good.

25. Chargers Notes about chargers: Not all chargers are created equal either. The best chargers will charge each battery individually. Unfortunately MOST chargers will charge all of the batteries with the exact same amount of electricity, which is bad and can be dangerous. –SMART chargers come with a little chip to detect when the voltage (resistance) builds up in a battery and shuts off and/or switches to trickle mode. Watch out for too cheap of a charger...at the very least...it can damage the battery. Make sure if it has a NiCD/NiMh switch, that it is in the correct setting. –Attempting to charge a non-rechargeable or the wrong type of battery could be a disaster. La Crosse Alpha Battery Charger and Recovery System BC-900 Battery charger – is one of the best chargers on the market.

26. Rechargeable Battery Industry is BIG Business Here is an ad that shows the changes to the rechargeable battery industry. This first ad shows how chargers have changed (the plug is built in…no heavy brick power adapter).

27. This 2nd ad shows the impact of the Lithium Ion battery (i.e. cells phone, laptops)...lots of power...in a small package (the CAMEA couldn’t REALLY jump start a car).

28. Charger Differences The top two are pretty basic, delivering the SAME amount of current (i.e.. charge) to all four batteries. The charger on the bottom is a SMART charger (it has a computer chip) …and is a much better charger because EACH battery gets it own specific, dedicated charge that is JUST right for the internal resistance of the batter, whether it be between brands or with in the same brand.

29. How to get rechargeables to work for you It is true, rechargeable batteries are lots of work. –If it were just for the money savings and doing what is right for the environment, most people wouldn't bother. –But today's devices REQUIRE the capacity and type of discharge rate possible with a NiMh or LiON battery...so it is necessary that we learn to deal with rechargeable. My recommendation is to always have three sets of batteries. –Run the first set down and have the other set ready to go. –If your camera is using AA batteries, the third set should be NON- rechargeable, preferably Lithium, so they do not loose their charge. Tip: –For AAs, keep them all going the same way for GOOD batteries, and mixed up for BAD batteries. –For LiON packs, number them so you know which is which.

30. UPS One of the only ways to protect your computer is to use a UPS. Your computer will actually be running on a battery that is charged by the wall outlet. The UPS battery is one of the best way to protect against power surges Think about this…when does a light bulb always seem to burn out

31. Video Clips Internet Storage (Computer related)