Charging; Automatic Charge Stage - Sena HFGC4DVL Instruction Manual

a. Test the battery for state of charger with a hydrometer or electronic percent-of-charge
tester.
b. Determine the size of the battery in Amp-Hour or Reserve Capacity. If the ratings are not
printed on the battery, contact your local battery dealer for this information. These are the
only ratings that can be used to determine length to charging time.
c. Use the battery rating, the charge level of the battery, and amp setting to be used on the
charger in the formula provided below.
Amp Hour Rating of Battery × Percent of Charged Needed
× 1.3 = Hours to Charge
Amp Setting Selected On Charger
NOTE: The length of charge times are approximate and varies from the battery to battery.
Always follow the battery manufacturer's specific charging instructions.

CHARGING

NOTE: Before using the charger, please review all safety and connection directions. Failure
to do so can damage battery and cause serious injury or death.
·Connect the charger to battery per the operating instructions.
·Connect the charger to AC outlet.
·Select the appropriate charging mode for your batteries.
·If the charger does not detect a properly connected battery, the Reverse Polarity Indicator
LED will light or the Error Code will appear on LCD display until such a battery is detected.
Charging will not begin while the Reverse Polarity Indicator LED is on or the error code di-
sappears. When the charging begins, the charging process Icon on LCD display will appear.
·When charging is completed, unplug the charger from the AC outlet first and then discon-
nect the batteries with charger.

AUTOMATIC CHARGE STAGE

Stage 1 - Diagnosis: Analyze if the battery can accept a charge or not, and then prevent
charging from proceeding on the a defective battery;
Stage2- Desulphation: The charger can rescue most drained batteries with voltages up to a
Min 1.5±0.5V
Stage 3 - Pre-charge: If the battery voltage is less than 12V, charge it at the smaller current,
which will protect the battery better;
Stage 4 - Soft start: Charge the battery to the maximum current gradually and never sud-
denly.
Stage 5 - CC1/CC2/CC3 (Constant Current): The charger automatically adjusts the current
according to the battery status in constant current, which benefits the battery for a long life;
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