CR220, 6V Flooded Manual

Troubleshooting
When properly maintained and charged, Crown deep cycle batteries will
provide many years of trouble-free service. However, failure to follow the
operating and maintenance guidelines listed above may result in poor
performance or premature failure. The following addresses some of the
typical errors in operation and maintenance:
Condition Check For
Poor Battery Performance
Undercharged Battery
Sulfated Battery
Cold Operating Environment
(Less than 32°F / 0°C Temperature
Reduces Usable Battery Capacity)
Defective Connectors or Cables
Low Electrolyte
Old Batteries
Defective Charge-Level Gauge
Unequal/Low Specific Gravities
Over-filling
Undercharging
Excessive Water Service
Overcharging
Container Leak
Old Batteries
Odor During Charging
Low Electrolyte
Overcharging
High Temperature
Overcharging
Battery Overworked
Opportunity Charging
Charging Guidelines – EV or Motive Power Service
Original equipment systems usually include an automatic
charging system for battery charging. To maximize battery life and
performance, batteries should be charged as outlined in the operating
instructions included with the charging equipment. In the event of a
charging-related battery performance problem, consult the OEM or
Crown Battery service department to seek technical support. Extra
care spent in proper charging will ensure battery performance.
Battery charging equipment varies in terms of output and overall
charging performance. For new or replacement chargers used in EV
or motive power service, Crown Battery recommends electronically
controlled automatic chargers that are programmed to deliver a high
constant current rate of 12 to 18 amperes per 100 ampere-hours (20
Hour Rating) of battery capacity. The constant voltage phase begins
after the gassing point is achieved (2.37 volts per cell). This stage of
charge will last approximately 5 hours for a fully discharged battery.
During the constant voltage phase the charger voltage is limited to the
gassing level (2.37 volts per cell), and the input current is allowed
to gradually diminish. When the input current falls to the finish rate
setting of 3 to 4 amperes per 100 ampere-hours (20 Hour Rating) of
battery capacity, the charge phase will change from constant voltage
to constant current at 3 to 4 amperes per 100 ampere-hours (20
Hour Rating) of battery capacity – with a maximum charging voltage
of 2.65 volts per cell. The charge will be terminated approximately
3.5 hours from the gassing point by an approved charge termination
method such as DV/DT. Please note that fixed ferro-resonant
chargers using this profile must have finish voltages set at 2.58 volts
per cell or higher.
Batteries should always be recharged immediately following a
complete discharge period. A weekly equalization charge – with the
finish rate charge time extended 3 hours for a total of 6 hours from
the gassing point – will ensure reliable discharge time and battery
life. The charge factor of the standard recharge cycle should be
equal to or greater than 1.08 (108%), while the charge factor of the
equalization cycle should be equal to or greater than 1.15 (115%). To
ensure optimum battery performance, total recharge time should in
all cases be limited to 10 hours.
Power off the charger before connection to the battery to avoid
sparking. To avoid battery explosion, never charge a frozen battery
– warming the battery to room temperature before charging service
begins. Charging service should be terminated if batteries become
excessively hot or if violent gassing or discharge of electrolyte
occurs during charge.