MPI-525
– USER MANUAL
52
Note:
- As a result of interferences in the network it is possible that the process of charging of accumulators
will finish too fast. In the case too short a time of charging is detected it is necessary to remove the plug
of the charger and start charging anew.
Additional informations displayed by the meter
Message
Cause
Proceeding
Battery connection error!
Excessive voltage
at the accumulator
package
during
charging.
Check the contacts of the accumulator
package. Should the problem persist, re-
place the package.
No battery!
No communication
with the accumula-
tor controller or bat-
teries compartment
put in.
Check the contacts of the accumulator
package. Should the problem persist, re-
place the package. Put the accumulators
compartment instead of batteries.
Battery temperature too
low!
The ambient tem-
perature is lower
than 10
C
It is not possible to charge the accumula-
tors correctly in such a temperature. Place
the meter in a warm place and commence
the charging mode anew.
The present message may be displayed
also in the case of deep discharging of the
accumulators. It is then recommended to
try to turn the charger repeatedly.
Precharge error
A
damaged
or
deeply discharged
accumulator pack-
age
The message is displayed for a while and
then the precharge process begins again.
If after several attempts the message:
Battery temperature too high!
is dis-
played, replace the package.
6.4 General principles regarding using Ni-MH accumulators
- If you do not use the device for a prolonged period of time, then it is recommended to remove the
accumulators and store them separately.
- Store the accumulators in a dry, cool and well ventilated place and protect them from direct sunlight.
The temperature of the environment in the case of prolonged storage should not exceed 30ªC. If the
accumulators are stored for a long time in a high temperature, then the occurring chemical processes
may reduce their lifetime.
- Accumulators NiMH resist normally 500-1000 charging cycles. The accumulators reach their maximum
capacity after being formatted (2-3 charge and discharge cycles). The most important factor which in-
fluences the lifetime of an accumulator is the depth of discharge. The deeper the discharge of the accu-
mulator, the shorter its lifetime.
- The memory effect is limited in the case of NiMH accumulator. These accumulators may be charged
at any point with no serious consequences. However, it is recommended to discharge them completely
every few cycles.
- During storage of Ni-MH accumulators they are discharged at the rate of approximately 30% per month.
Keeping accumulators at high temperatures may accelerate this process even 100%. In order to prevent
excessive discharge of accumulators, after which it would be necessary to format them, it is recom-
mended to charge the accumulators from time to time (even if not in use).
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