Service work
B-Series18 | Ottobock
4.7.2 Replacing the batteries
Accumulation of explosive gases in the battery compartment due to use of incorrect batteries
Severe injuries due to explosion in battery compartment
f Use only AGM or gel batteries which have been approved for this product by the manufacturer. Please contact
Ottobock regarding the purchase of replacement batteries.
Unauthorised battery replacement
Battery damage due to unauthorised changes to the product
f Battery replacement may only be performed by qualified personnel trained by the manufacturer.
f 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.
f Prerequisites:
Optional: Move the seat to the lowest seat height (see Seite 12).
Switch off the control unit and deactivate the main fuse (see Seite 12).
If necessary: Remove the legrests.
f Tools: open-ended or ring wrench size10
Removing the batteries
1) Fold up the seat (see Seite 13).
2) Remove the battery cover (see Seite 14).
3) Remove the insulator caps from the battery poles (see Fig. 17, item 1).
4) INFORMATION: Note the installed position of the batteries, battery cables and cable attachments.
Unscrew all battery cables from the battery poles (see Fig. 17, item 2).
5) If necessary: Remove the cable attachments on the battery cables (see Fig. 17, item 3).
6) If necessary: Carefully move transverse cables aside (see Fig. 17, item 4). Remove additional cable attachments
if necessary.
7) WARNING! Risk of tipping due to changed centre of gravity. Secure the seat and the wheelchair against
tipping and falling with the active support of a helper.
Lift the batteries up and out by the handles (see Fig. 18).
Installing the batteries
1) Use the handles to carefully set the batteries into the battery tray in the mobility base.
INFORMATION: Reestablish the original, crosswise placement of the battery poles (see battery circuit
diagram in the battery cover and on Seite 96).
2) Connect all battery cables to the battery poles according to their original installed position (see Fig. 17, item 2).
Tighten the screws on the battery poles to 6 Nm.
3) Place the insulator caps onto the battery poles (see Fig. 17, item 1).
4) Fasten the cable attachments between the battery cables (see Fig. 17, item 3).
5) If necessary: Move transverse cables to their original installed position and secure with cable attachments if
necessary (see Fig. 17, item 4).
6) Attach the battery cover (see Seite 14).
7) Fold down the seat (see Seite 13).
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