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INTERNAL SHORT CELL BATTERY
• If the battery being charged has an internal shorted cell, the FAULT LED will light.
• If FAULT LED light comes on, Vector recommends you take your battery to a certified automotive service center
for evaluation.
BATTERY NOT ACCEPTING A CHARGE
• Make sure that the charger is plugged into a "live" 110/120VAC outlet and Power LED is lit.
• Unplug charger and check battery connections - ensure that there is a good connection at the battery terminal and/or
vehicle chassis.
• Check that the correct charge rate was selected for the battery being charged.
• Enusre enought charging time was allowed to charge battery.
NOTE: Charger will NOT operate on batteries below 2.0 Volts. If a 12 Volt battery is below 2.0 volts it is probably
shorted, open or sulfated and should be replaced.
VERY COLD BATTERY
If the battery to be charged is extremely cold (in temperatures less than freezing - 0º C/32º F) it cannot accept a high
rate of charge, so the initial charge rate will be slow. The rate of charge will increase as the battery warms.
WARNING: DO NOT ATTEMPT TO CHARGE A FROZEN BATTERY
CHARGING TIMES
The VEC1086B, a fully automatic Smart Battery Charger will automatically adjust the charge rate as the battery becomes
charged and stops charging when the battery is fully charged. For estimates of the time it takes to charge a battery refer
to the following table for details. Deep cycle batteries may need longer charging time. It is recommended to repeat the
charging cycle a second time beginning with the 2 AMP rate.
The following chart converts hydrometer readings into percent of charge values.
Refer to the chart below for approximate charging times.
SPECIFIC GRAVITY PERCENT OF CHARGE PERCENT OF CHARGE NEEDED
(HYDROMETER READING) IN BATTERY BY BATTERY
1.265 100% 0%
1.225 75% 25%
1.190 50% 50%
1.155 25% 75%
1.120 0% 100%
The times shown in the chart above are approximate and refer to an average automotive battery. For smaller batteries,
the charge time should be adjusted using the formula shown below and adding 1 hour to the time calculated.
To estimate charging time for a discharged battery, divide the amp hour (aH) rating of the battery by the charge rate
selected. This is the number of hours required to recharge the battery. For example, a 50 AH (12 volt) battery is
discharged (10 volts). How long should it be charged at the 10 Amp rate? Divide the 50 AH by 10.
Answer: 5.5 hours. Always round up the charge time by 10% to ensure full charge. In most cases, battery charging times
will vary depending on the age and condition of the battery. Smaller batteries should be charged at a lower rate (2 Amps)
and add an extra hour to charge time.
PERCENT OF CHARGE 75% 50% 25% 0%
2 AMPS 7 HRS 14 HRS NR* NR*
6 AMPS 2.5 HRS 5 HRS 7 HRS 9.2 HRS
10 AMPS 1.4 HRS 2.8 HRS 4.1 HRS 5.5 HRS
* Not recommended