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VI. BATTERIES AND CHARGING
Frequently Asked Questions (FAQs)
How does the charger work?
The battery charger takes the standard electrical outlet voltage of 120 VAC (alternating current) and converts it to 24
VDC (direct current). The power chair batteries use direct current to run your power chair. When the battery voltage is
low, the charger works harder to charge the battery. As the battery voltage approaches full charge, the charger doesn’t
work as hard to complete the charging cycle. This explains why the ammeter drops as it approaches a full charge. This is
how the charger maintains a charge but does not overcharge the battery.
Can I use a different battery charger?
You should use the charger supplied with the power chair. It is the safest, most efficient tool to charge the batteries. We do
not recommend using other types of chargers (e.g., an automotive battery charger).
NOTE: Your power chair’s charger will not operate after the batteries have been discharged to nearly zero
voltage. If this happens, call your Quantum Rehab Specialist for assistance.
How often must I charge the batteries?
Many factors come into play when deciding how often to charge the batteries. You may use your power chair all day on a
daily basis or you may not use it for weeks at a time.
! Daily Use
If you use your power chair on a daily basis, charge the batteries as soon as you are finished using your power chair.
Your power chair will be ready each morning to give you a full day’s service. It is recommended that you charge the
batteries 8 to 14 hours after daily use.
! Infrequent Use
If you use your power chair infrequently (once a week or less), you should charge the batteries at least once per week
for 12 to 14 hours.
NOTE: Keep your batteries fully charged and avoid deeply discharging your batteries. Do not charge the
batteries for more than 24 hours at a charging cycle.
How can I get maximum range or distance per charge?
Rarely do you have an ideal driving situation such as smooth, flat, hard terrain with no wind, hills, or curves. More often you
are presented with hills, sidewalk cracks, uneven and loosely packed surfaces, curves, and wind. All of these factors will
affect the distance or running time per battery charge. Below are a few suggestions for obtaining the maximum range per
charge:
! Always charge the batteries fully prior to your trip.
! Plan your trip in advance to avoid inclines if possible.
! Limit baggage weight to essential items.
! Try to maintain an even speed and avoid stop-and-go driving.
What type of batteries should I use?
We recommend deep-cycle batteries that are sealed and maintenance free. Both AGM and Gel-Cell are deep-cycle
batteries that are similar in performance. Refer to the Specifications Table for more information regarding the batteries used
with your power chair.