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7.9 Batteries/charging process
7.9.1 Safety instructions
CAUTION
Failure to check the charge level before putting into operation
Injury to the user due to stopping suddenly, problems due to unplanned stalling
► Check the charge level of the batteries before each use.
► Always make sure that the charge level of the batteries is sufficient for the planned distance.
► Never drive with the batteries almost fully discharged.
► When the batteries are almost fully discharged, charge them promptly.
NOTICE
Unauthorised battery replacement
Battery damage due to unauthorised changes to the product
► Replacing the battery or modifying the battery installation position may only be performed by qualified person
nel trained by the manufacturer.
► The charging profile of the battery charger established at the factory matches the batteries included in the
scope of delivery and may not be altered independently.
7.9.2 General
The power wheelchair is equipped with maintenance-free batteries. See the section "Technical data" for the battery
capacity.
The batteries are located under the seat of the power wheelchair, beneath the battery cover.
Prolonged driving when the battery is low results in deep discharge and battery damage. Shortly before, the driv
ing speed decreases and the user is warned regarding battery deep discharge (see page 43.
7.9.3 Battery charging information
Batteries may only reach their full capacity after approx. 20 charging cycles. Only if the full capacity of the batter
ies has been reached can the power wheelchair achieve the stated driving distance range.
At temperatures of < 0 °C/32 °F the battery capacity drops by up to 35 per cent in relation to the capacity for an
outside temperature of 20 °C/68 °F. This shortens the driving distance range of the power wheelchair accordingly.
Moreover, the charge level displayed on the control panel can differ from the actual rated battery capacity to a
greater extent.
The following information should be observed for an optimal charging cycle:
•
The batteries may be charged at any time regardless of the charge level.
It takes about 10 to 12 hours until a discharged battery (only one flashing segment) is fully charged. Sub
•
sequently leaving the power wheelchair connected is no cause for concern, since the battery charger has a
programmed recharging phase that maintains the full battery charge level.
•
If the power wheelchair is used every day, the battery should be charged every night.
•
Never discharge the batteries completely (deep discharge).
•
After charging the batteries, the battery cable should be disconnected from the plug connection on the control
ler if the wheelchair will not be used for more than three days. However, the battery cable has to be correctly
reconnected each time before charging and before using the power wheelchair (see page 13).
•
The batteries will gradually discharge if the wheelchair is not used for extended periods of time. If the power
wheelchair is not used for an extended period, the batteries should be charged once per week to maintain
their capacity.
•
Turn the power wheelchair's control device off during charging so that all of the charging current is supplied to
the battery.
490E163=*
Use
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