Advertisement
AUTOMATIC BATTERY CHARGER
AC Supply:
DC Output:
Battery Capacity:
Battery Size:
Normal Recharge Time:
PLEASE SAVE THESE IMPORTANT SAFETY AND OPERATING INSTRUCTIONS
For correct operation of the equipment, it is important to read and be familiar
with this entire manual before installing and operating the charger.
LOOK FOR THIS SYMBOL TO POINT OUT SAFETY PRECAUTIONS. IT MEANS:
BECOME ALERT—YOUR SAFETY IS INVOLVED. IF YOU DO NOT FOLLOW THESE
SAFETY INSTRUCTIONS, INJURY OR PROPERTY DAMAGE CAN OCCUR.
• Charger output characteristics are adjustable to charge gel cell and sealed or conventional replaceable liquid electrolyte
deep-cycle lead-acid batteries. Different charge characteristics are selected by a switch on the front of the charger.
• Patented electronic circuit monitors battery state of charge and automatically turns charger off as battery reaches full charge
• Line voltage compensation produces consistent charger output for AC supply voltage variations of + 3% from nominal.
• Convection-cooled design for maximum reliability and minimum maintenance.
INTRODUCTION
The Dual-Mode wheelchair battery charger is
designed to recharge deep-cycle, lead-acid batteries
of conventional replaceable electrolyte or gel cell
and sealed "maintenance-free" design. The different
charge characteristics required by these different
types of battery design are selected by sliding the
www.lesterelectrical.com
24 VOLT DUAL MODE
MODEL 18330-48
120 volts, 60 Hertz, single-phase, 3 amps maximum
24 volts, 8 amps tapering to 2 amps
Two series connected, 6 cell, 12 volt deep-cycle motive power batteries. Gel
cell and sealed "maintenance-free" or conventional replaceable electrolyte
deep-cycle batteries
28 to 90 amp hours
8 hours
DO NOT DISCARD THIS MANUAL AFTER READING.
TYPE 24EL8
Specifications
Features
"BATTERY TYPE" switch to the correct setting. A
patented electronic circuit turns the charger on and
off automatically.
Batteries used on wheelchairs are subjected to
severe deep-cycle duty on a daily basis. For this
reason, it is important that only Deep-Cycle batteries
be used.
1
∗33106∗
33106A
Advertisement
Table of Contents
Related Manuals for Lester 18330-48
Summary of Contents for Lester 18330-48
- Page 1 ∗33106∗ 24 VOLT DUAL MODE AUTOMATIC BATTERY CHARGER MODEL 18330-48 TYPE 24EL8 Specifications AC Supply: 120 volts, 60 Hertz, single-phase, 3 amps maximum DC Output: 24 volts, 8 amps tapering to 2 amps Battery Capacity: Two series connected, 6 cell, 12 volt deep-cycle motive power batteries. Gel cell and sealed "maintenance-free"...
- Page 2 AC INPUT CAUTION: THIS CHARGER IS FOR USE This battery charger must be grounded to reduce the ONLY ON 12 CELL, 28-90 AMP-HR (20 HR. risk of electric shock. It is equipped with an electric RATE), 2.38-2.50 VOLTS PER CELL MAXIMUM cord having an equipment-grounding conductor and VOLTAGE RECHARGEABLE,...
-
Page 3: Normal Operation
Gel cell and sealed "maintenance-free" deep-cycle GOOD WORKING CONDITION. DO NOT USE batteries are generally distinguished by non- CONNECTORS THAT CRACKED, removable cell caps. The physical appearance of CORRODED, OR DO NOT MAKE ADEQUATE the battery case is frequently the same as that of a ELECTRICAL CONTACT. -
Page 4: Proper Care Of Deep-Cycle Motive Power Batteries
battery voltage below volts (see normal charging. Larger batteries (greater than Troubleshooting). ampere-hours) severely discharged batteries may require up to 16 hours to be The charger has an under-voltage protection properly charged and equalized. If the charger mode which will terminate the charge if the operates for 16 hours and is unable to fully battery voltage does not increase above 18 volts charge the batteries, an internal timer turns the... -
Page 5: Personal Precautions
WHICH CAN CAUSE BODILY HARM. DO NOT 3. Wear complete eye protection and clothing PLACE WRENCHES OTHER METAL protection. Avoid touching eyes while working OBJECTS ACROSS THE BATTERY TERMINALS near battery. OR BATTERY TOP. ARCING OR EXPLOSION OF 4. If battery acid contacts skin or clothing, wash THE BATTERY MAY RESULT. - Page 6 a. Using the wheelchair before batteries are RED LIGHT GREEN LIGHT FUNCTION fully charged and charger is turned off No AC power or no battery connected shortens battery life and begins reducing STEADY STEADY Light test when AC connected daily range. This battery capacity loss is SLOW BLINK Charging (less than 80% charged)
- Page 7 c. Very deeply discharged batteries (100% a. Improper batteries used with charger. Must discharged) can require more than 16 hours be a 12-cell, 2.38-2.50 volts per cell battery to charge. system. d. Several failed cells in the batteries that do b.
-
Page 8: Wiring Diagram
WIRING DIAGRAM PARTS LIST FOR 24 VOLT DUAL MODE CHARGER MODEL 18330-48 TYPE 24EL8 120 VAC / 60 HZ PART NO. QTY. DESCRIPTION 31153S CASE ASSEMBLY 22458S SWITCH, ROCKER 04275S BUSHING, STRAIN RELIEF, FOR AC CORD 18363S BUSHING, STRAIN RELIEF, FOR DC CORD 23083S CORDSET, AC, 18/3, 102"... -
Page 9: Warranty
W A R R A N T Y Lester Electrical warrants each new Lester Battery Charger for defects in material and workmanship for a period of two (2) years from the date of manufacture of the complete unit. Repairs can be made at the Lester factory. To do so, first obtain a "Return Material Authorization"...
Need help?
Do you have a question about the 18330-48 and is the answer not in the manual?
Questions and answers
When I turn it on the green light comes on then goes off and the red light comes on and stays on.
When the green light on the Lester 18330-48 turns off and the red light stays on, it indicates that either the DC plug is not correctly connected to the battery, there is an open circuit in the wheelchair's internal circuitry, or the battery voltage is below 7 volts.
This answer is automatically generated
Is this type charger safe for charging a lithium iron phosphate battery? For wheelchair.? Model 18330
No, the Lester 18330-48 charger is not safe for charging a lithium iron phosphate battery. It is designed specifically for deep-cycle lead-acid batteries, including gel cell, sealed "maintenance-free," or conventional replaceable electrolyte types. It does not support lithium battery chemistries.
This answer is automatically generated