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Battery Types
B–8 975-0263-01-01
Battery
Connections
Connections to battery posts must be made with permanent connectors
that provide a reliable, low-resistance connection. Do not use alligator
clips. Clean the connections regularly and prevent corrosion by using a
protective spray coating or Vaseline.
Battery State of
Charge
You can measure battery state of charge with a hydrometer or
approximate state of charge with a voltmeter. Use a digital voltmeter that
can display tenths or hundredths of a volt when measuring 10 to 30 volts.
Make your measurements when the battery has not been charged or
discharged for several hours. For a deep-cycle battery at 77º F (25º C), use
the following table:
Battery Voltage State of Charge
12.7–13.0 V 100%
12.5–12.6 V 80%
12.3–12.4 V 60%
12.1–12.2 V 40%
11.9–12.0 V 20%
Xantrex_PRO1800.book Page 8 Tuesday, April 24, 2007 11:33 AM