ProMariner Digital Mobile Charge Battery User Manual

Digital Mobile Charge

Advanced Electronic In-Transit 4-Stage Battery to Battery Charger

Owner’s Manual and Installation Guide

Model Part Number Description

Digital Mobile Charge 05502 Advanced In-Transit 4-Stage Charger
24V to 24V Battery to Battery (Input 20 Amp, Output 20 Amp)

Digital Mobile Charge 05503 Advanced In-Transit 4-Stage Charger
24V to 12V Battery to Battery (Input 20 Amp, Output 40 Amp)

Digital Mobile Charge 05504 Advanced In-Transit 4-Stage Charger
12V to 12V Battery to Battery (Input 40 Amp, Output 40 Amp)

Digital Mobile Charge 05505 Advanced In-Transit 4-Stage Charger
12V to 24V Battery to Battery (Input 40 Amp, Output 20 Amp)

Your Satisfaction is Important to us. Do Not Return this Product to the Retailer or
Dealer for any Service or Warranty Requirements. Please Call our Customer Care
Department line at 1-800-824-0524 from 8 am to 5 pm (Eastern Time) for Warranty,
Service or Installation Assistance you may need. Thank you.

IMPORTANT SAFETY NOTICE - SAVE THESE INSTRUCTIONS

Please save and read all safety, operating and installation instructions before
Installing or applying power to your Digital Mobile Charge.

Table Of Contents

Product Overview page 3

Advantages of the DMC page 3

Details of Operation page 4

General Safety Instructions page 4

Personal Safety Precautions page 5

Installation Warnings page 5

Installation / Wiring page 6

Positioning Battery Type Switch page 7

Start up and Test Procedure page 8

Description of LED’s page 9

Specifications page 10

Customer Service and Warranty page 11

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Digital Mobile Charge Overview :

The best way to charge a battery is using a 4 step battery charging curve, which cannot be
achieved from a standard alternator. Additionally a standard alternator cannot output a large
enough charge to power an auxiliary battery bank.

First and foremost, On Board Solutions’ Digital Mobile Charge ensures at all times that the power
required to run the primary system of the vehicle or boat engine is not affected. The engine start
battery is constantly monitored and receives top charging priority. The surplus power created by
fooling the alternator is amplified into a higher voltage by the Digital Mobile Charge and is used to
charge a secondary battery bank using a totally isolated digitally controlled 4 step charging curve.
The engine start battery cannot discharge through this system, even in the event of a unit failure.

In summary, the Digital Mobile Charge provides your extra battery system a charge that is
approximately 5 times faster than could be achieved in using the vehicles alternator. This provides
in-transit charging of extra battery banks and increases the life of the batteries by de-sulphating
them. The Digital Mobile Charge provides the same utility as an advanced regulator, a zero loss
battery isolator, and a 4 step battery charger.

Advantages of the Digital Mobile Charge:

1) Installation: Low Cost and Simple installation. Simply connect the unit to your start battery and
to your additional domestic battery bank.

2) No direct connections to the standard engine alternator, or to the outboard.
The Digital Mobile Charge replaces the need for a battery isolator and an advanced regulator, all
while providing in-transit charging.

3) The Digital Mobile Charge always ensures the engine start battery is maintained and top
charging priority.

4) Multiple Digital Mobile Charge units can be used. For example, if you have a 60 amp
alternator, and 3 battery banks (engine start, domestic bank, and bow thruster) then 2 units can be
used to run the domestic bank and the bow thruster bank. Internal programs will adjust their
charger patterns to accept the second unit, all while ensuring only excess power is used and the
primary start battery is not placed in jeopardy.

5) Ensures there is no voltage rise on the engine management system, eliminating the risk of
alarms or damage to the system.

6) The Digital Mobile Charge isolates both the engine start battery and domestic battery bank,
preventing any feedback through the unit.

3

Details of Operation:

Digital Mobile Charge begins operation by monitoring the engine start battery. The unit will not
start until the battery voltage exceeds approximately 13 volts for 12V models (26V for 24V
models), then waits for 2.5 minutes to ensure that some charge is placed quickly into the engine
start battery. After that, the Digital Mobile Charge pulls the engine battery down to no less than 13
volts for 12V models (26V for 24V models), which enables the engine battery to still receive a
small charge and ensures the alternator works at its full potential.

Additionally, to further ensure the engine battery is O.K., every 20 minutes the Digital Mobile
Charge stops for 3 minutes, allowing the engine start battery to be charged exclusively by the
alternator. After the 3 minutes, the Digital Mobile Charge resumes battery bank charging by pulling
down the engine start battery to 13 volts for 12V models (26V for 24V models) and so continues
the charging cycle. After a period of time, calculated by the software, when the battery bank
batteries are full, the system will float the batteries at 13.5 volts for 12V models (27V for 24V
models) all while ensuring the viability of the engine battery comes first.

Other features included in this system are an alternator temp sensor, a remote battery temp
sensor and a fully automatic sleep sensor, which switches the unit off when the engine has
stopped.

General Safety Instructions:

• Before connecting your batteries, read all instructions and cautionary markings on

the battery charger and batteries.

• CAUTION - To reduce the risk of injury; charge only lead acid type rechargeable batteries
(lead acid, gel cell and AGM). Other types of batteries may burst, causing personal injury.

• Use of attachments not recommended or sold by On Board Solutions or Professional
Mariner, LLC may result in a risk of fire, electrical shock or personal injury.

• Do not operate the charger if it has received a sharp blow, direct hit of force, dropped or
otherwise damaged in any way.

• Do not disassemble the charger. Call the factory directly when service or repair is required.

• Incorrect assembly may result in risk of electrical shock or fire.

WARNING: RISK OF EXPLOSIVE GASESWORKING IN THE VICINITY OF A LEAD ACID
BATTERY IS DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL
BATTERY OPERATION. FOR THIS REASON IT IS OF EXTREME IMPORTANCE THAT EACH
TIME BEFORE USING YOUR CHARGER YOU FOLLOW THE SAFETY INSTRUCTIONS
FOUND IN THIS MANUAL.

To reduce risk of battery explosion, follow these instructions and those published by the
Battery manufacturer, and of any equipment you intend to use in the vicinity of a battery.

Review all cautionary markings and labels.

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