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23 Issue 4
General information
Batteries are the power source for
almost all of the modern mobility
products available today. The
design of batteries used in mobility
products is significantly different to
the batteries used to start a car for
example. Car batteries are designed
to release a large amount of power
over a short period of time, whilst
mobility batteries (commonly called
deep cycle batteries) release their
power evenly, over a long period of
time. Therefore, due to the lower
production volumes and increased
technological requirements,
mobility batteries are typically more
expensive.
Commonly two 12 volt batteries are
used together in a mobility product,
giving a total voltage of 24 volts.
The size of the battery, (e.g. its
available power) is expressed in
amps per hour e.g. 30amp/hr. The
higher the number, the bigger the
battery size, weight and, potentially,
the greater the distance you can
travel.
Sunrise Medical only fit as standard
maintenance free batteries into this
type of wheelchair.
Maintenance free batteries
This type of battery uses a method
of carrying the electrolyte
commonly referred to as ‘gel’, that
is held within the battery case. As
the name implies, no maintenance
is required other than regular
charging. You can safely transport
this type of battery without fear of
acid spilling.
Furthermore, they are approved for
transportation on aircraft.
Battery care
Below is set out a battery care plan
for maintenance free batteries. This
has been agreed between Sunrise
Medical and the battery
manufacturers, to enable you to get
the best out of your batteries. If a
different care plan is followed, this
may result in lower than expected
performance from your mobility
vehicle.
Batteries and charging