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6.0 Baeries, charging and range
6.1 Baeries
Baeries are the power source for almost all of the modern
mobility products available today. The design of baeries used
in mobility products is signicantly dierent to the baeries
used to start a car for example. Car baeries are designed
to release a large amount of power over a short period of
me, whilst mobility baeries (commonly called deep cycle
baeries) release their power evenly, over a long period of
me. Therefore, due to the lower producon volumes and
increased technological requirements, mobility baeries are
typically more expensive.
Commonly two 12 volt baeries are used together in a
mobility product, giving a total voltage of 24 volts. The size
of the baery (e.g. its available power) is expressed in amps
per hour e.g. 70amp/hr. The higher the number, the bigger
the baery size, weight and, potenally, the greater the
distance you can travel. Sunrise Medical only t as standard
maintenance free baeries into these types of wheelchairs.
This type of baery uses a method of carrying the electrolyte
commonly referred to as ‘gel’, that is held within the baery
case. As the name implies, no maintenance is required other
than regular charging. You can safely transport this type of
baery without fear of acid spilling. Furthermore, they are
approved for transportaon on aircra, trains and ships.
CAUTION!
• Do not t car baeries to the wheelchair. Fit only deep cycle,
maintenance free mobility baeries.
• When the baeries are worn out, take them to the local
authority disposal point.
• Do not expose any part of the baery to direct heat (i.e.
naked ame, gas re).
• Be extra cauous to reduce the risk of dropping a metal tool
onto the baery. It could spark or short circuit the baery
or other electrical parts that may cause an explosion. Also
take o all personal metal eects and dangling objects when
working on the baery.
• Return the baeries back to Sunrise Medical or directly to
the baery manufacturer for recycling, when they no longer
hold charge.
• The baery terminals need to be checked regularly for
signs of corrosion. If any corrosion is apparent, then clean
the terminals completely and re-grease the terminal using
Vaseline petroleum jelly, not ordinary grease. Ensure that
the terminal nut and bolt, cable clip and exposed cable are
completely covered with jelly.
DANGER!
• Do not expose any part of the baery to direct heat (i.e.
naked ame, gas re).
• Be extra cauous to reduce the risk of dropping a metal tool
onto the baery. It could spark or short circuit the baery
or other electrical parts that may cause an explosion. Also
take o all personal metal eects and dangling objects
when working on the baery.
Fig. 6.1
DANGER!
• Do not, under any circumstances, tamper with the baeries.
If in any doubt contact your local Sunrise Medical authorised
dealer.
• Avoid contact with acid on damaged sealed type baeries or
wet baeries.
• Baery acid can cause burns to the skin as well as damage to
oors, furniture and your wheelchair.
• If baery acid comes into contact with the skin or clothing,
wash immediately with soap and water.
• If baery acid comes into contact with the eye, immediately
ood the eye with running cold water for at least 10 minutes
and seek medical aenon immediately.
• Acid spills can be neutralised with baking soda and water.
• Take care to keep baeries upright at all mes, especially
when transporng your wheelchair.
Safety cut-outs
In the event of a short circuit there are several safety systems
built into your wheelchair to safeguard your electrical circuits,
(Fig. 6.1).
1. Fusible 100A links are connected into the baery harnesses
to protect the baeries and wiring.
2. 15A auxiliary power circuit fuses for auxiliary modules and
seang power supply.
To replace them contact your Sunrise Medical authorised
dealer, who will also diagnose the original fault.
Baery Connector
Baery Connector
Auxillary Power
100A
100A
15A
YELLOW
RED
RED
BLACK BLACK