camera charger boosts the charging speed

1
Batteries
How boring can a lesson get, right? WRONG!

• 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?

2
Keeping Your Device Going

• A little humor
• even this young kid understands the importance of
  keeping the camera running...with an external
  battery.
• http//www.danelopower.co.uk/battery-phone-and-pda
  -battery/

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
Replacing an INTERNAL BD tool battery.
5
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
  TVsthe 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.

6
Battery Life
7
Disadvantages of Rechargeables

• Do not like to be completely discharge (esp.
  LiON)
• Cost more initiallyusually 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 suddenlymost 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 dayespecially 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 upcause fires...here is a battery
  that blew up at my house...and very fortunately
  did not cause a fire...

8
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 newsat the endat least with AA
  and AAA

9
Battery Ratings

• Rechargeable batteries are rated by how much
  power they will deliver over a period of time,
  calledAmperes 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.

10

• 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.