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eneloop:
- can be used right after the
purchase
- has a high performance
- has a long shelf life with no
loss of energy
- can be used everywhere
- is cheap in purchase and
usage
- is environmental friendly
- is easy to use
So far these
requirements could not be satisfied by a single type of
batteries.
The only choice was disposable batteries or rechargeable
batteries.
ADVANTAGES of
DISPOSABLE Batteries:
- they can be used immediately
- they have a long shelf life
with low loss of energy
- they are rather cheap in
purchase
- they are easy to use and no
charger is required
DISADVANTAGES of
DISPOSABLE Batteries:
- can be used only once and
therefore mean substantial waste and risk for the
environment.
- have to be purchased over and
over again and are therefore expensive considering
the life-time of your equipment.
- are not quite powerful enough
in certain applications ( like digital cameras )
- are being offered in many
varieties and special application-specific types,
which confuses the consumer.
ADVANTAGES of
RECHARGEABLE Batteries:
- high performance, especially
if high discharge currents are required ( like in
digital cameras )
- cheap in use, because they
can be recharged many times.
- environmental friendly,
because one rechargeable battery replaces 1000
disposable batteries.
- good performance at low
temperatures.
DISADVANTAGES of
RECHARGEABLE Batteries:
- After purchase, rechargeable
batteries have to be charged before they can be
used.
- Rechargeable batteries lose
the stored energy rather fast.
- The state of charge is hard
to determine.
- Continuous charging or
frequent charge ( without complete discharge ) can
destroy the battery.
- Proper charging is
complicated for an average consumer
- The charging takes quite
long and rapid chargers are expensive.
All these
negative attributes have one root-cause:
self discharge.
Which means
that a charged battery slowly discharges itself without
any equipment consuming any current.
This is the reason for rechargeable batteries being sold
in discharged state. When you came to use them the
energy
was gone. |