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PROCEDURE 11FWD WHEELCHAIRS
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B. For Model RANGER II
250 SERIES
- the battery
charger rate decreases to a "trickle charge".
NOTE: If performing the charging procedures indepen-
dently, READ and CAREFULLY follow the individual in-
structions for each charger (supplied or purchased).
NOTE: If charging instructions are not supplied, consult a
qualified service technician for proper procedures.
Required Items:
TOOL QUANTITY COMMENTS
Battery Charger 1 Supplied
✪✪
✪✪
✪ Extension Cord 1 Not Supplied
✪ 3-prong plug, 15 ampere current rating; industrial type
1. Attach the battery charger connector to the charger
cable/battery harness.
2. Plug the charger’s AC power cord, or extension, into
the grounded 120 VAC wall outlet.
3. Wait until charging is complete.
NOTE: Allow eight (8) hours for normal charging. Larger
batteries (greater than 55 ampere-hours) or severely dis-
charged batteries may require up to sixteen (16) hours to
be properly charged and equalized.
NOTE: RANGER II
BASIC
and RANGER II
STANDARD
ONLY
- If the charger operates for sixteen (16) hours and is
unable to fully charge the batteries, an internal timer turns
the charger off and begins to fast blink the green light.
NOTE: If the batteries need to be charged more often or
take longer to charge than normal, they may need to be
replaced. Contact a qualified technician for service.
FIGURE 4- CHARGING BATTERIES
From Battery Charger
Battery Charger
Connector (on side
of Wheelchair)
NOTE: Position of Battery Charger Connector may
vary depending on wheelchair options.
CHARGING BATTERIES (FIGURE 4)
WARNING
Never attempt to recharge the batteries by
attaching cables directly to the battery termi-
nals or clamps. Always use the recharging plug
located on the side 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
several days.
The range per battery charge using recommended bat-
teries should be approximately 5 to 9 hours of typical op-
eration. Extensive use on inclines or age of batteries may
substantially reduce per charge mileage.
Description and Use of Battery Chargers
The charger automatically reduces the amount of charge
from an initially high rate to a zero reading at a fully charged
condition.
SHUTOFF PROCEDURE.
A. For Models RANGER II
BASIC
and RANGER
II
STANDARD
-If left unattended, the charger will auto-
matically shut-off when full charge is obtained.
B. For RANGER II
250 SERIES
-The Charger output and
green light will stay ON until the power switch on
the battery 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 RANGER II
BASIC
and RANGER
II
STANDARD
- this is indicated 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 RANGER II
BASIC
and RANGER
II
STANDARD
- the green light will stay illuminated for a
longer period of time followed by a shorter off time.
REPLACING BATTERIES
WARNING
Most batteries are not sold with instructions. How-
ever, warnings are frequently noted on the cell
caps. Read them carefully, otherwise injury or
damage can occur.
NOTE: Invacare recommends that both batteries be re-
placed if one (1) battery is defective.