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Chapter 6
Useful Information
Important Notice Concerning the Correct
Use and Charging of a Ni-MH Battery
Batteries, due to their construction, undergo some wear and tear. The life of a
battery also depends on correct maintenance. Charging and discharging are the
most important factors. You should take notice of the following to maintain
battery life for as long as possible.
A Ni-MH battery has the "memory effect". When the handset is used several
times for less than 15 minutes and then immediately recharged, the capacity of
the battery will be reduced to only 15 minutes. Therefore, you should discharge
the battery completely, i.e. use it in the handset until "
" on the display starts
flashing. Then recharge it as described in the manual. After the memory effect
has occurred, it is possible to achieve almost full capacity from the Ni-MH
battery by charging and discharging several times one after another.
A Ni-MH battery can also self-discharge depending on the ambient temperature.
At temperatures under 0°C, it will be at its lowest. At high humidity and high
temperatures, it will be at its highest. Also long-term storage will lead to self-
discharge. An exhausted Ni-MH battery should not be disposed of normally. It
contains toxic heavy metal Hydride and therefore should be recycled.
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