Monaco DIPLOMAT 2004 Owner's Manual page 331

The chassis battery operates only chassis and engine functions. The
chassis battery is a crank type battery, producing the high amperage needed
to start the engine. Engine starters initially require a large amount of current
to crank an engine. Initial starter amperage draw exceeds 1200 amps. The
type of application in which the engine battery is used differs from the house
battery application. The engine battery state of charge remains consistent.
Maintenance is still required with an engine battery. Regular electrolyte level
checks and hydrometer readings should be performed. High electrolyte
consumption, or inconsistent hydrometer cell readings, may indicate a
charging system problem. Perform a charging system and current draw check
if the battery is exhibiting abnormal hydrometer readings.
NOTE: Replacement batteries should have the same cold
cranking amp (CCA) rating.
Application
12 Volt Chassis*
Group 31p - LHD (2 each)
6 Volt Domestic**
U2200 (4 each)
*Batteries connected in parallel. **Battery connections are made in a Series/Parallel connection.
†CCA Ratings are at 0º F. These are the minimum requirements.
Battery State of Charge vs. Voltage / Specific Gravity
Voltage Specific Gravity
12.66 1.265
12.45 1.225
12.25 1.190
12.05 1.145
11.90 1.100
Voltage Reading: Battery fully charged at rest for one hour.
CUMMINS ENGINE COLD CRANKING AMPS REQUIREMENTS
ISC 1250
CCA Rating are at 0º F. These are the minimum requirements.
ELECTRICAL SYSTEMS - CHASSIS
Ah (20hr) CCA†
750
450
State of Charge Depth of Charge
100%
75%
50%
25%
0%
CCA 12 VOLTS
RC (25A @ 80° F)
minutes
180 X 2 = 360
75Amp@
80º F. = 230 Min.
0%
25%
50%
75%
100%
DIPLOMAT 2004
BATTERY
- CHASSIS
BATTERY
SPECIFICATIONS
-CHASSIS
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