P.O. Box 1306
Newport Beach
California 92663
Phone: 714-751-0488
Fax: 714-957-1621
E-Mail: techservice@newmarpower.com
www.newmartelecom.com
Table 4 Table 5
S4 - Back-Up
Hysteresis
Pos 4
Pos 5
Pos 6
1 Volts
OFF
OFF
OFF
1.2 Volts
ON
OFF
OFF
1.4 Volts
OFF
ON
OFF
1.6 Volts
ON
ON
OFF
1.8 Volts
OFF
OFF
ON
2.0 Volts
ON
OFF
ON
2.2 Volts
OFF
ON
ON
2.4 Volts
ON
ON
ON
INTERNAL BATTERY CHARGING & REPLACEMENT:
The MDP internal battery is a sealed lead acid and requires no maintenance. Battery life is typically up to five years, but
will vary depending on use and operating environment. The battery should be replaced no less frequently than every five
(5) years to guarantee proper operation of the MDP. (Request part # 591-0712-0)
To determine the age of the battery, check the date code located on top of the battery. The four digits refer to the year and
month of manufacture. For instance, a unit with a date code of “1035” was manufactured the 35th week of 2010.
To replace the battery first remove power to the MDP input wiring and turn off all 12 Volt loads connected to MDP. Remove
the fuse from the holder labeled “BATTERY”. To access the battery, loosen and back out the four front Battery Access Plate
securing screws and remove Battery Access Plate.
Once the plate is removed, you will see the battery is secured in position by a Locking Plate. Loosen and back out the two
Locking Plate locking screws. Lift Locking Plate up from bottom and remove battery. When the terminals are exposed,
disconnect the push on connectors and remove the battery. Reinstall the new battery by lifting up on the Locking Plate
and sliding the battery partially back into the compartment, re-attach the terminals (confirm proper polarity or damage
can result) and push the battery all the way back in until the Locking Plate can shut properly. Dispose of the old battery
properly. Re-tighten the two battery retaining bracket securing screws. Re-install the battery access plate and re-install
and tighten the four battery access screws. Although the battery is sealed, it is a Lead-Acid type, so there are restrictions
on its disposal.
S4 – Charger Re-Start Interval
Pos 1
Pos 2
Pos 3
6 Hrs
OFF
OFF
OFF
7 Hrs
ON
OFF
OFF
8 Hrs
OFF
ON
OFF
9 Hrs
ON
ON
OFF
10 Hrs
OFF
OFF
ON
12 Hrs
ON
OFF
ON
24 Hrs
OFF
ON
ON
48 Hrs
ON
ON
ON
Battery Access Plate
Front Screws
Lock Screws
Locking Plate
Battery
Terminals
+
-
CAUTION: Observe correct battery polarity!
8
Fig. 5: Internal Battery Charging & Replacement
