MAJORCHARGE 24/25, 48/20, 36/20, 12/10, 12/5 Owner's Manual
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MAJORCHARGE
Battery Charger
Owner’s Manual
GEL, PRO, HD SERIES
6/8/12/16/24/36/48 Volt
Standard Features of all Chargers
◊ Battery Type Switch (BTS)
◊ High energy return, fast charging
◊ Constant current first stage
◊ Dual voltage limit (cyclic/standby)
◊ Proportional timed cyclic charge stage
◊ Constant voltage float standby
◊ Automatic safety override timer
◊ Start delay on battery connect
◊ Short and reverse connector shutdown
◊ Rugged SCR phase control
◊ Mains zero-crossing battery sensing
AND PROPER USE OF THE CHARGER
***SAVE THESE INSTRUCTIONS***
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***CAUTION***
READ THIS MANUAL CAREFULLY
FOR RULES OF SAFE OPERATION
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12/24/36/48 Volt
DIMENSIONS
• 12”L x 7”W x 7”H
Model Input Output
MajorCharge12/25 117VAC, 60Hz, 480VA 12VDC, 25A
MajorCharge24/25 117VAC, 60Hz, 850VA 24VDC, 25A
MajorCharge36/20 117VAC, 60Hz, 1120VA 36VDC, 20A
MajorCharge48/20 117VAC, 60Hz, 1400VA 48VDC, 20A
Suitable for use with all types of lead-acid batteries,
including the new types of maintenance-free and gelled
electrolyte batteries.
OPTIONAL EXPORT AC INPUT RATINGS
• 100 V – 50 Hz AC Input (Japan)
• 115/230 V – 50 Hz AC Input (Europe) (CE)
• Full Wave Phase Controlled Rectification
CONTROL
• Voltage limited to 2.42 V/Cell (Normal Mode)
• 2.33 V/Cell (Gel-Cell Mode)
• 2.62 V/Cell (Liquid Electrolyte Mode)
• Current limited to AMP rating MEAN DC
• Automatic timer starts when first stage voltage
limit reached. Proportional CV stage timer –t/2+1
hour.
• Constant voltage 2.3 V/Cell after timeout, with
temperature compensation.
PROTECTION
• Electronic reverse polarity.
• Short circuit shutdown and current limit.
• Combined circuit breaker and power switch on
front panel.
BATTERY TYPE & RATING
• HD Chargers are for use with Lead Acid Batteries
of minimum capacity 50 AH, Gel Cell, Absorbed
Electrolyte or Liquid Electrolyte types by using the
BTS (Battery Type Switch)
12/24 Volt
DIMENSIONS
• 6”L x 6.5”W x 5.25”H
Model Input Output
MajorCharge12/5 117VAC, 60Hz, 110VA 12VDC, 5A
MajorCharge12/10 117VAC, 60Hz, 220VA 12VDC, 10A
MajorCharge24/5 117VAC, 60Hz, 200VA 24VDC, 5A
MajorCharge24/8 117VAC, 60Hz, 320VA 24VDC, 8A
Suitable for use with all types of lead-acid batteries,
including the new types of maintenance-free and gelled
electrolyte batteries.
OPTIONAL EXPORT AC INPUT RATINGS
• 100 V – 50 Hz AC Input (Japan)
• 115/230 V – 50 Hz AC Input (Europe) (CE)
• Full Wave Phase Controlled Rectification
CONTROL
• Voltage limited to 2.42 V/Cell (Normal Mode)
• 2.33 V/Cell (Gel-Cell Mode)
• 2.62 V/Cell (Liquid Electrolyte Mode)
• Current limited to AMP rating MEAN DC
• Automatic timer starts when first stage voltage
limit reached. Proportional CV stage timer –t/2+1
hour.
• Constant voltage 2.3 V/Cell after timeout, with
temperature compensation.
PROTECTION
• Electronic reverse polarity.
• Short circuit shutdown and current limit.
• AC input fuse in AC input connector.
BATTERY TYPE & RATING
• PRO Chargers are for use with Lead Acid
Batteries, Gel Cell, Absorbed Electrolyte or Liquid
Electrolyte types by using the BTS (Battery Type
Switch)
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6/12/24 Volt
DIMENSIONS
• 6”L x 6.5”W x 5.25”H
Model Input Output
MajorCharge6/6 117VAC, 60Hz 6VDC, 6A
MajorCharge12/2 117VAC, 60Hz 12VDC, 2A
MajorCharge24/3 117VAC, 60Hz 24VDC, 3A
MajorCharge36/3 117VAC, 60Hz 36VDC, 3A
MajorCharge48/5 117VAC, 60Hz 48VDC, 5A
Suitable for use with all types of lead-acid batteries,
including the new types of maintenance-free and gelled
electrolyte batteries.
OPTIONAL EXPORT AC INPUT RATINGS
• 100 V – 50 Hz AC Input (Japan)
• 115/230 V – 50 Hz AC Input (Europe) (CE)
• Full Wave Phase Controlled Rectification
CONTROL
• Voltage limited to 2.4 V/Cell
• Current limited to AMP rating MEAN DC
• Finish voltage 2.3 Volts/Cell
•
•
Proportional Timed Cyclic Charge Stage
Flashing Yellow LED to show 80% state of charge
PROTECTION
• Electronic reverse polarity.
• Short circuit shutdown.
• Low voltage start.
Optional temperature compensation.
•
BATTERY TYPE & RATING
• GEL Chargers are for use with Lead Acid, Gel Cell
Batteries
SAVE THESE INSTRUCTIONS – This manual
1.
contains important safety and operating
instructions.
2. Before using this battery charger, read all
instructions and cautionary markings on (1) the
battery charger, (2) the battery, (3) product using
the battery.
3. CAUTION – To reduce risk of injury, charge only
lead acid, maintenance-free, or flooded lead acid
type rechargeable batteries. Other types of
batteries may burst, causing personal injury or
damage.
4. Do not expose charger to rain or snow.
5. Use of an attachment not sold or recommended
by the battery charger manufacturer may result in
a risk of fire, electric shock or injury to person.
6. To reduce risk of damage to electric plug and
cord, pull by plug rather than cord with
disconnecting charger.
7. Make sure cord is located so that it will not be
stepped on, tripped over or otherwise subjected to
damage or stress.
8. An extension cord should not be used unless
absolutely necessary. Use of improper extension
cord could result in risk of fire and electrical shock.
If an extension cord must be used, make sure:
a. That pins on plug of the extension cord are
b. That the extension cord is properly wired
c. That the wire size is large enough for the
Length of cord
AWG Wire Size
9. Do not operate charger with damaged cord or
plug. REPLACE THEM IMMEDIATELY.
10. Do not operate charger if it has received a sharp
blow, been dropped or otherwise damaged in any
way; return it to a qualified service source.
11. Do not disassemble charger if repair or service is
required; Incorrect reassembly may result in a risk
of electrical shock or fire. Bring charger to a
qualified service source.
12. To reduce risk of electrical shock, unplug charger
from outlet before attempting any maintenance or
cleaning.
the same number, size and shape as those
of the plug on the charger.
and in good electrical condition.
A/C ampere rating of the charger as
specified in the table below:
25 ft 50 ft 100 ft 100 ft
18 18 16 14
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