Permobil Chairman Entra, Owner'S Manual, Page: 11 / 44

Fig. 3. Batteries and electronic unit
Electrical system
The wheelchair batteries are situated under the chassis cover, behind the electric
motors. Permobil recommends that you use maintenance-free gel batteries.
If you use acid batteries it is important to check the electrolyte level regularly.
A battery with an electrolyte level that is too low can boil dry, resulting in increased
temperature and damage to the battery.
Owner’s Manual Chairman Entra Design and Functions
- 11 -
When using acid batteries, use the acid-proof battery bag to avoid damage
to the chair and adjacent surfaces.
Fig. 4. Acid batteries should be
placed in the battery bag before
being placed in the wheelchair
Electronic unit
Batteries