POWERTECH PLUS MB-3622 User Manual

15Amp Intelligent Battery Charger

Suitable for SLA, Gel, Maintenance Free, AGM, Deep Cycle batteries

MB-3622

D THESE INSTRUCTIONS BEFORE USE

REA

AND RETAIN FOR FUTURE REFERENCE!

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CAUTION!

When working near batteries, care should be taken
at all times as batteries can generate explosive
gases during charging and operation. Remove
personal metal items prior to use. Use care when
using metal tools.

UTION!

CA

Some batteries require vent plugs to be removed
before charging.

UTION!

CA

Only to be used with 12V Lead-acid (Wet, Gel, and
Sealed type) Batteries with 12-250Ahr capacity.

CA

UTION!

For negative chassis-earthed vehicles, connect the
positive lead from the charger to the battery
positive terminal first. Then connect the negative
lead from charger to the battery negative terminal,
or the vehicle chassis. After charging is complete,
disconnect the battery charger from the mains
supply, then remove the negative lead from the
battery, and lastly remove the positive lead from
the battery.

UTION!

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This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience or
knowledge, unless they have been given
supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Children should be supervised and instructed not
to play with the appliance.

INTRODUCTION

MB-3622 intelligent battery charger with 12-bit AD
microprocessor

– Charges with 12 V, 15/10/2 A DC (22/15/3 A RMS)
– Self-identifying multi-stage characteristic charging curve

Soft Start tests the battery condition. Severely discharged
batteries need the soft start step. The charging starts with a
reduced current until the voltage reaches 10V.

Bulk is the main step where most of the charge is returned
(60-80%). The charger delivers maximum current until the
terminal voltage has risen to the set level of 14,2V for Normal
battery selection and 14.0V for Gel battery selection and 14.4V
for Deep Cycle battery selection.

Absorption completes the charge up to virtually 100% at a
constant voltage. The current tapers off after the current reached
the minimum level.

Float is maintenance charge at constant voltage, keeping the
batteries at 100% charge. Normal charging mode is time-limited
(max 10 days) while Supply mode goes on indefinite without
damaging the battery.

Pulse is maintenance charge for maximum battery life. Charging
varies between 80% and 100% state of charge. The battery
receives a pulse, starting a new charge cycle, when voltage drops
to set limit. This keeps the battery in perfect condition when it is
not in use. The charger can be connected for months keeping the
batteries fresh.

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SPECIAL FEATURES

Temperature Control Fan

To protect the charger from overheating, a fan is includ ed for heat
dispensation. Also to increase the life span of the fan, a sensor
will control the on off of the fan, where the fan will not use when
the HFC is not in a hot condition.

Temperature Compensation

A sensor will automati cally adjust the charging volt age if the
temperature deviates between – 20°C to +50°C. At a high
temperature environment the unit lowered the output voltage and
at a freezing condition, the unit will adjust a higher output voltage.

Voltage compensation:

Because of some voltage drop in the cables, the actual voltage at
the clamps of the battery can be lower than the charger output
voltage. A special circuitry inside the unit will monitor the true input
voltage to the battery and adjust the output voltage of the unit
accordingly. This will maximize the charging efficiency.

Buzzer Warning

A built in buzzer will hel p to warn the user when connect the
clamps to the battery wrongly.

Display

 Reverse Polarity - Reverse Polarity Connection to Battery

Pole.

 Battery Fault – Faulty Battery Indicator.
 Charging – While Battery is Charging.
 Full Charge – When Battery is Fully Charged and in

Maintenance Mode.

 3 X 7 Segment LEDs Display for Charging Current, Battery

Voltage, & Charging %.

Cable Management

The casing is designed with AC and DC cables storage
compartment. This will help to avoid cable damage and
subsequently any possible danger to user.

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