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Products
Knowledge
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| General
frequently asked questions about our products
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The rating for battery?
How do I charge my batteries?
what is "Memory Effect"?
What is a battery cycle?
Should I charger may new battery for more than 12 hours before first use? Should rechargeable batteries be fully discharged before recharging?
Does it really help to store batteries in the refrigerator?
Can I use my older Ni-Cad battery charger to charge my Ni-MH batteries?
Where can I find more information on charging
batteries for my notebook computer,digital camera camcorder or
others?
9. The
rating for battery
V (olts): The voltage of the new battery should always match the
voltage of the original.
mAh: It standards for milli-Amp hours (1 mAh=0.001Ah),High amp-hour
rating means a longer run-time and will not cause incompatibilities.
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10. How
do I charge my batteries ?
Our Ni-MH chargers are fully automatic. Plug your charger into
an A/C (or D/C power source for the Powerex MH-C204F-DC) and place
your batteries into the charger in matched pairs of two or four
batteries to begin charging. Red lights indicate charging in progress.
The lights will turn green when charging is complete and the charger
will automatically switch to a trickle charge. The trickle charge
will keep your batteries fully charged and ready for use. Refer
to our Charger Manuals page for more detailed operating instructions
for your model charger. (Return
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11. What
is "Memory Effect"?
Ni-Cad batteries, and to a lesser extent Ni-MH batteries, suffer
from what's called the "memory effect". What this means
is that if a battery is repeatedly only partially discharged before
recharging, the battery "forgets" that it has the capacity
to further discharge all the way down. To illustrate: If you,
on a regular basis, fully charge your battery and then use only
50% of its capacity before the next recharge, eventually the battery
will become unaware of its extra 50% capacity which has remained
unused. The battery will remain functional, but only at 50% of
its original capacity. The way to avoid the dreaded "memory
effect" is to fully cycle (fully charge and then fully discharge)
the battery at least once every two to three weeks. Batteries
can be discharged by unplugging the device's AC adapter and letting
the device run on the battery until it ceases to function. This
will insure your battery remains healthy.
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12. What
is a battery cycle?
Cycle life is measured by the amount of times a battery may be
charged and discharged. Every time a battery is charged and discharged,
it uses one cycle. Cycle life is very important in battery applications
such as laptop batteries and emergency light batteries. A Ni-Cad
battery has a cycle life of 500-1000 or more cycles.
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13. Should I charger may new battery for more than 12 hours before first use?
A:Generally speaking,No. most notebook batteries will automatically stop charging when they have heen fully charged.In general, the charging time is between 3 ~ 6 hours, especially with li-ion batteries used by most 3C products(Computer, Communication, and Consumer electronics)today, they do not alow excessive charging. Some Ni-MH or Ni-Cd battery chargers may maintain the charge by using small amount of current to continuously charging the battery after they are fully charged. In the case, there sould be no time limit.
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14. Should rechargeable batteries be fully discharged before recharging?
A: Theoretically speaking, the biggest benefit of Li-ion batteries is that it does not have memory effect so it's not necessary to drain them before recharging. But for Ni-Mh and Ni-Cd batteries, it's better to drain the power completely (use it up) before recharging especially with Ni-Cd batteries due to its tendency to have memory effect. However, it is helpful to the batteries' performance to regulary discharge them completely before recharging again, especially for laptop computer users.
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15. Does
it really help to store batteries in the refrigerator?
Yes, but only if they can be kept dry as well. The higher the
temperature, the more the free flow of ions or self-discharge
from the battery. Storing primary batteries (D's, C's, AA's, AAA's,
9 volt, etc.) in a cooler environment slows down this rate of
discharge that all batteries experience even when not in use,
hence a longer shelf life. However, if this is done, it is important
that the batteries be kept as dry as possible by keeping them
in an airtight container in the driest part of the refrigerator,
the door side for example. Long time exposure to moisture inside the
refrigerator can cause internal corrosion to the battery. When
removing batteries from the refrigerator, allow them to warm up
to room temperature before using them in your device.
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16. Can
I use my older Ni-Cad battery charger to charge my Ni-MH batteries?
No, you can use a new Ni-MH charger to charge your old Ni-Cad batteries
but you should not try to charge Ni-MH batteries with a Ni-Cad charger.
Here's why: Ni-MH and Ni-Cad batteries are chemically very similar
and when both are fully charged the battery voltage will start
to drop. The Ni-MH voltage drop is much more subtle and more difficult
to detect. Ni-MH chargers usually have an over-temperature sensor
and shutoff to prevent overcharge as well as a more sensitive
voltage drop detector where Ni-Cad chargers usually only use the
voltage drop to determine when to stop charging. If you charge
Ni-MH batteries in a Ni-Cad charger it will probably miss the voltage
drop and keep right on charging causing the batteries to overheat.
Overcharging and overheating Ni-MH batteries can damage them internally
and reduce battery life.
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17.Where
can I find more information on charging batteries for my notebook
computer,digital camera camcorder or others?
Try these links for a more detailed batteries selection for laptop,digital
camera,camcorder and battery
chargers.
For low price laptop battery,Try
laptop battery
For low price camcorder battery, Try
camcorder battery
For the best digital camera battery, Try digital camera battery
For the best batteries chargers, Try battery charger
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