Owner's manual

6. CHARGING
The start rate of a fast charge battery can be as high as 40% of the batteries rated
capacity at the 6 hour rate. During the end of the day full charge, the charge rate should
taper down to the finish rate (approximately 5% of the rated capacity) by the time the
battery is 85% charged and may be even lower when the battery is fully charged. Short
running times and/or low end-of-charge specific gravities may indicate inadequate
recharge. Consult your local GNB representative on specific charging problems.
7. MAINTENANCE
KEEP RECORDS… Showing specific gravities, equalizing, charging, temperature,
cleaning and voltages on a monthly basis. These records are required to maintain your
warranty.
TEMPERATURE… Under normal fast charge operating conditions, the
electrolyte temperature shall be between 60-140° F. Operating temperature
above 100° F will reduce the battery’s service life. Operating temperature
below 60° F results in less capacity and special charging is required.
WATER ADDITIONS… GNB-approved fast chargers have the capability for equalize
charging at specific times and days of the week (e.g. Sunday 08:00). Water additions can
be made the following day prior to use, provided an equalization charge is confirmed to
have been performed.
EQUALIZE… Once a week.
DEPTH OF DISCHARGE… Do not discharge the battery below 80% of the rated
capacity. Over discharging shortens the battery life and voids the warranty.
CLEANING… Keep the top of the battery clean and dry. See Item 8.
PREVENTIVE MAINTENANCE SCHEDULE…
WEEKLY
• Check electrolyte levels (see water additions).
• Equalize charge.
MONTHLY
• Record electrolyte specific gravities.
• Visual inspection and confirmation that the battery-mounted monitor is
functioning properly.
• Inspect the cables and charging plugs.
• Clean the top of the cells.
SEMI-ANNUAL
• Inspect the charger. Confirm proper output voltage and current. Check for
external damage, frayed cables, or worn connectors.
• Clean the exterior of the battery.
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