Maintenance & Troubleshooting Manual
HB-P527
SUPO-643
REV A
8
SECTION 2 | MAINTENANCE
2.1 | BATTERY MAINTENANCE
Battery cycle life will vary significantly depending on the depth of discharge. The deeper the depth of dis-
charge the fewer cycles a battery will deliver. Conversely, the shallower the depth of discharge the more
cycles a battery will deliver. To optimize the health of your battery, limit discharge to 80%.
The performance and life of a battery will vary with application, usage, temperature and depth of discharge.
AGM batteries tend to deliver higher than their rated capacity (up to 10-15% higher) for -30 cycles until they
are “broken in” and settle at their rated capacity.
Operating batteries above 80°F (27°C) will yield runtime above the rated capacity and operating batteries be-
low 80°F (2rC) will yield runtime below the rated capacity. Cold temperatures can significantly reduce battery
capacity. Although higher temperatures increase the battery capacity
they also accelerate corrosion and reduce overall battery life.
2.2 | BATTERY MAINTENANCE WET CELL BATTERIES
If this unit is equipped with a deep cycle 12-volt Group 27 battery, the care and maintenance of your battery
has much to do with how well this unit functions. Battery wiring and water level should be checked month-
ly. Do not overfill. When the cells are too full, fluid will seep out when charging. The solution is at its prop-
er strength when the battery is manufactured. Use distilled water and keep fluid up to proper level. When
required, water should be added to battery after charging, unless water level is below the plates.
• Slide cabinet open to access battery.
• Remove battery caps and check fluid level.
• Fill each cell (if needed) to split ring with distilled water.
• Reinstall caps.
• Wash all dirt, debris, acid, etc., off battery whenever corrosion is detected. Use a solution of 5ml bak-
ing soda per 0.95 liters of warm water.
• Coat terminals with a commercially available coating.
• Close cabinet and latch in place.
2.3 | CHARGING THE BATTERY
This unit is equipped with either a deep cycle 12-volt AGM maintenance-free battery or a deep cycle Group
27 battery. Batteries should be fully charged after each use. Opportunity charging can be done but the batter-
ies should be fully charged at least every other day if they are used daily. Charge in a ventilated area as gases
may be released through the pressure relief valve if the batteries are excessively over-charged.
NOTE: The surrounding temperature greatly affects the power reserve within a battery. Example:
A battery that is 100% charged at 80° F (27°C) drops to 65% at 32°F (0°C) At 0°F (-18°C), this battery
will drop to 40% efficiency.
WARNING
BATTERIES GENERATE EXPLOSIVE GASES. KEEP SPARKS AND
FLAME AWAY FROM BATTERIES. DO NOT SMOKE WHILE
CHARGING.
