Husky MP2500 Manual page 69

Note: If non-rechargeable batteries are fitted, you must select disabled.
When you have finished, press E and then C to leave the HOT
key.
If the HOT key does not work or the Power option is not displayed, the
application may provide similar facilities. If you are not sure, refer to the
application's user instructions, or ask your system provider.
If the HOT key shows that the batteries are chargeable, but they still will not
recharge, they may need replacing. See section 8.2.2.4 for details.
You will find more details on the HOT key and charging configuration in
section 11.5.
Note: Even if the main batteries are removed or completely discharged,
the contents of the RAM and clock will still be preserved by another
independent battery which is fitted internally. This should protect the
contents of the memory for 2 to 3 days, but does not allow
operation. If the MP2500 may be without power for more than a few
days, copy any files that you want to keep to disk.
8.2.2.3 Caring for rechargeable batteries
In normal use, the rechargeable battery stick will last 12 to 18 months
before needing to be replaced, although its life is reduced by repeated or
prolonged total discharge and by excessively high temperatures. During this
period, the capacity should only decrease slightly. However, batteries may
also exhibit a "memory effect" which reduces their capacity (temporarily) if
they are repeatedly recharged when only partly discharged. This memory
effect applies to NiCd batteries, but is less noticeable with NiMH batteries.
Therefore, to maintain battery capacity, follow these simple rules:
•
NiCd batteries should not be recharged when they still have a
significant charge remaining - they prefer full discharge cycles.
•
NiMH batteries should be topped up with charge frequently - they prefer
shallow discharge cycles.
•
However, don't leave recharging until the batteries are completely
exhausted.
Chapter 8: Regular Maintenance 47