L-Series Wagon 4WD F4-1781cc 1.8L SOHC Turbo (MPFI) (1985)
Technical Service Bulletin # 074390
Date: 900122
Battery - Testing and Charging Procedures
NUMBER
07-43-90
DATE
01-22-90
ALL SUBARU MODELS 1977 TO PRESENT INCLUDING
APPLICABILITY LEGACY AND LOYALE VEHICLES
SUBJECT:
BATTERY TESTING AND CHARGING PROCEDURES
Attached is the manufacturer's testing and charging procedures for OEM and Subaru replacement batteries.
Part Number
Application
Specifications
SOA4071110
All models 1977 to present
^
Group size: BC1 = 21
except Legacy vehicles
^
Reserve capacity at 27~C
(80.6~F) = 90 minutes
^
Cold cranking amperes (CCA)
at -18~C (0~F) = 525 amps
^
Maximum recommended charging or
operating temperature = 52~C (125~F)
^
Weight 33 lbs.
SOA4071120
All Legacy models
^
Group size BC1 = 35
^
Reserve capacity at 27~C (80.6~F) = 110 minutes
^
Cold cranking amps (CCA) at -18~C (0~F) = 490 amps
^
Maximum recommended charging or
operating temperature is 52~C (125~F)
^
Weight 37 lbs.
NOTE:
Both of these batteries can be used in the Justy. The post position of the SOA4071120 matches that of the OEM Justy battery, however.
General Information
The most accurate means of checking the state of charge of a lead acid and/or maintenance-free battery is measuring the specific gravity of its electrolyte.
This is accomplished using a good quality battery hydrometer. The hydrometer should be the hydrometer-thermometer type such as Snap-on BB4B
which permits the user to adjust the observed specific gravity reading based on the temperature of the electrolyte.
The specific gravity range for state of charge is:
1.265
- 1.299
Full Charge
1.235
- 1.265
3/4 Charge
1.205
- 1.235
1/2 Charge
1.170
- 1.205
1/4 Charge
1.140
- 1.170
Barely Operable
1.110
- 1.140
Completely Discharged
Testing Procedures -
Safety Precautions
Visual Inspection