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35
930373 Rev. B
34
930373 Rev. B
B. BATTERY CHARGER
A battery charger produces a direct current (DC).When applied to a discharged
battery,this reverses the chemical reaction that led to its discharge.
1. Charge Rate. How fast a battery will charge depends on:
• Its electrical capacity; state of charge;electrolyte temperature, and;
internal condition.
• The DC output of the charger.(The charge rate will vary if the alternating
current (AC) supply is higher or lower than 110 volts).
2. Caution — To Avoid Damage to the Charger:
• Never place the charger on top of a battery during charging. (Gases from
the battery can damage the charger and may lead to an explosion or fire).
• Never place a battery on top of the charger.
• Never expose charger to rain or snow.
• Never unplug charger by pulling on the electrical cord.This will damage
the cord.
• Never open a charger or attempt to repair it yourself. Return charger to
Sunrise or have repairs made only by a qualified person.
• Keep cord out of the way,where it will not be stepped on, tripped over,
or damaged.
3. Caution — To Avoid Damage to the Battery:
• Make sure you use the correct setting (located on the charger) for
“wet” or “gel” type batteries.
• Never charge a frozen battery.A fully charged battery will rarely freeze,
but the fluid in a discharged battery can freeze at 16 degrees Fahrenheit
(minus 9 degrees Centigrade). If you suspect a battery is frozen, thaw it
before charging.
Lead acid batteries generate explosive gas while charging. Completely read and follow
all warnings about the batteries in this user instruction manual and any labels applied
to the product.Failure to do so could result in fire,explosion,injury and/or death.
XI. BATTERIES
A. INTRODUCTION
1. Notes:
• Batteries supply the power for your chair.They contain a finite amount of
energy and have limits on how long they can store and supply energy.
• You can charge batteries only a certain number of times before they will
fail and no longer hold a charge.
• For answers to questions about batteries,consult your Sunrise supplier.
2. Use Proper Batteries:
Your chair operates on two 12 volt batteries.
• They should be 22 NF or U1 size with a minimum of 30 ampere hour
rating, and of the deep cycle type.
• When you buy a replacement,insist on a deep cycle type. Do not use a car
starter battery.
3. Breaking In:
• A battery requires “breaking-in” for the first 6 to 12 charges. It will not
accept a full charge for this period.
• It is best to limit the length of your trips until you break the batteries in
and you know the range of your chair.
4. Discharged Batteries:
• Never allow a battery to completely discharge. If you operate your wheelchair
until it has almost stopped,you will greatly reduce the life of your batteries.
• Never let a battery sit in a discharged condition. Give unused or stored
batteries a full charge once per month.
• Always fully charge the batteries.Avoid“topping Off” with frequent charges.
Never connect a life support or auxiliary device to a wheelchair battery.The electrical
system may fail, and result in severe injury to or death of rider.
XI. BATTERIES