Outback Power Systems 80 user manual Suggested Battery Charger Set Points, State Of Charge

34. SUGGESTED BATTERY CHARGER SET POINTS

The battery manufacturer should provide you with specific instructions on the following maintenance and voltage set point limits for the specific batteries. The following information can be used when the manufacturer’s information is not available.

SEALED LEAD ACID – AGM / GEL	V	24V	48V
ABSORB voltage set point	14.4V	28.8V	57.6V
FLOAT voltage set point	13.4V	26.8V	53.6V
NON-SEALED LEAD ACID	V	24V	48V
ABSORB voltage set point	14.8V	29.6V	59.2V
FLOAT voltage set point	13.8V	27.6V	55.2V

Note: Higher settings can be used with non-sealed batteries, but water consumption will be greater and excessive temperatures when recharging may occur.

Battery Voltage and State of Charge

A battery’s voltage can be used as a guideline to estimate the amount of power stored in the battery that is available for use. When referencing the battery voltage on the display, be sure the battery is not under significant recharging or heavy loads. Otherwise, the DC voltage is not reflective of the battery state of cycle. Often the best time to check the battery voltage is in the morning (pre-charging) or at night (post-charging), with the battery disconnected from charging sources and loads and a rest for at least three hours.

Operation of a battery below 50% state of cycle will adversely affect the long term health of the battery system and will result in premature failure. Keeping the battery above the 50% level and recharging it completely once a month will ensure proper operation and good performance.

STATE OF CHARGE

Nominal Battery	Charged	Good (~75%)	Average (~50%)	Low (~25%)	Discharged
Voltage
12V	over 12.6V	12.3V	12.0V	11.7V	under 11.4V
24V	over 25.2V	24.6V	24.0V	23.4V	under 22.8V
48V	over 50.4V	49.2V	48.0V	46.8V	under 45.6V
60V	over 63.0V	61.5V	60.0V	58.5V	under 57.0V

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