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Battery Gauge

Display

MKIV X, A OR A+ JOYSTICK

FIGURE 5 - WHEN TO CHARGE BATTERIES

NOTE: MKIV X Shown.

WHEN TO CHARGE BATTERIES
(FIGURE 5)

It is advantageous to recharge daily rather than only when
necessary. In fact, a battery’s life is extended if the charge
level is maintained well above a low condition.

NOTE: As a general rule, batteries should be recharged
daily to assure longest possible life and minimize required
charging time. Plan to recharge batteries when it is antici-
pated wheelchair will not be used for a long period of time.

MKIV RII Joystick

BATTERY DISCHARGE INDICATOR (BDI) is located at
the rear of the joystick housing and provides information on
the remaining charge in the batteries. At FULL charge the
BDI will be GREEN. As the battery becomes discharged,
the BDI indicator will turn AMBER (YELLOW), then RED
and finally FLASHING RED. If the BDI is FLASHING RED,
the user should charge the batteries as soon as possible.

NOTE: Accurate readings are displayed when in neutral.

MCC-MKIV X, A or A+ Joystick

BATTERY GAUGE DISPLAY (BGD) is the bar graph display
located on the MKIV X, A or A+ joystick. It will keep you
informed as to power availability. A visual warning is given
before the power becomes too low to operate the wheelchair.
At full charge the two (2) LEFT segments and the farthest
RIGHT segment of the bar graph will be illuminated. As the
battery becomes discharged, the farthest RIGHT segment
will progressively move to the LEFT until only the last two
(2) bars (LEFT) are illuminated. At this level the last two (2)
bars (LEFT) will start to Flash ON and OFF to indicate that
the end user should charge the batteries as soon as possi-
ble.

CHARGING BATTERIES (FIGURE 6)

WARNING

Never attempt to recharge the batteries by attach-
ing cables directly to the battery terminals or
clamps. Always use the recharging plug located
on the side/rear of the wheelchair frame.

DO NOT attempt to recharge the batteries and
operate the power wheelchair at the same time.

During use and charging, unsealed batteries will
vent hydrogen gas which is explosive in the right
concentration with air.

CAUTION

Always charge new batteries fully BEFORE initial use
or battery life will be reduced.

NOTE: As a general rule, batteries should be recharged
daily to assure the longest possible life and minimize the
required charging time. Plan to recharge the batteries when
it is anticipated the wheelchair will not be used for a long
period of time.

The range per battery charge using recommended batter-
ies should be approximately 5 to 9 hours of typical opera-
tion. Extensive use on inclines may substantially reduce
per charge mileage.

Description and Use of Battery Chargers

The charger automatically reduces the charge from an ini-
tially high rate to a zero reading at a fully charged condition.

SHUTOFF PROCEDURE.

A. For Models R2

BASIC

and R2

STANDARD

-If left unat-

tended, the charger should automatically shut-off
when full charge is obtained.

B. For R2

250 SERIES

-The Charger output and green

light will stay ON until the power switch on the bat-
tery charger is moved to the OFF position.

There are some basic concepts which will help you
understand this automatic process:

The amount of electrical current drawn within a given time
to charge a battery is called “charge rate”. If, due to usage,
the charge stored in the battery is low, the charge rate is
high. (FOR MODELS R2

BASIC

and R2

STANDARD

- this is indi-

cated by the green light on the charger. Initially, the green
light will stay illuminated for a short period of time followed
by a longer period of off time.)

As a charge builds up, the charge rate is reduced, and the
following will occur:

A. For Models R2

BASIC

and R2

STANDARD

- the green light

will stay illuminated for a longer period of time fol-
lowed by a shorter off time.

B. For Model R2

250 SERIES

- the battery charger rate

decreases to a "trickle charge".

PROCEDURE 14