Aeon AT56-69E, Service Manual, Page: 31 / 196

MAINTENANCE
2-21
BATTERY CHARGING (SEALED BATTERY)
The sealed battery is already filled with electrolyte and has
been sealed at the factory. Never pry the sealing strip off or
add any type of fluid to this battery.
The single most important thing about maintaining a sealed
battery is to keep it fully charged. Since the battery is sealed
and the sealing strip cannot be removed, you must use a
voltmeter or multi-meter to measure the DC voltage at the
battery terminals.
1. Check the battery voltage with a voltmeter or multi-meter.
The battery voltage should read 12.8 VDC or higher.
2. If the voltage is less than 12.8 volts, charge the battery at
1.2 amps or less until battery voltage is 12.8 VDC or greater.
NOTE: When using an automatic charger, refer to the
charger manufacturer’s instructions for battery
charging directions. When using a constant current
charger, follow the guidelines in the following table:
STATE OF
CHARGE
VOLTAGE ACTION CHARGE
TIME
100% 12.8 - 13 VDC None, check
again in 3
months
None
Required
75% - 100% 12.5 - 12.8
VDC
May need
slight charge,
check again in
3 months
3 - 6 hrs
50% - 75% 12.0 - 12.5
VDC
Needs Charge 5 - 11 hrs
25% - 50% 11.5 - 12.0
VDC
Needs Charge At least 13
hrs, verify
state of charge
0% - 25% 11.5 VDC or
less
Needs Charge
with
de-sulfating
charger
At least 20 hrs
BATTERY INSPECTION
When installing a new battery, make sure it's fully charged
prior to its initial use. Using a new battery that has not been
fully charged can damage the battery and result in a shorter life.
It can also hinder vehicle performance.
Note:
Fully charged: over 12.8 V
Failure charged: under 12.5 V