Operation Manual

52
GRACE ONE 2013 Manual
Important tips and instructions for handling lithium ion batteries
If you don’t wish to use your GRACE ONE for an extended period of time (> 1
month), make sure that the battery voltage is not below 44 volts.
In this way,
you can extend the length of the life span of your battery pack.
You can read
the battery voltage off the display (page 63).
Lithium ion batteries have no memory effect, therefore you can charge your
GRACE ONE
at any time irrespective of the state of charge of the batteries.
However, we recommend that you use up the battery capacity fully at
regular
intervals to achieve the best possible life span.
If your GRACE ONE cannot be switched off as usual, there could be a defect in
the controls. I
n this event, contact your GRACE dealer immediately in order to
avoid long-term damage to the batteries.