Frequently Asked Questions
How do I know if the battery is charged?
The charger’s FULLY CHARGED LED will illuminate (solid). Alterna-
tively use a battery hydrometer. A reading of 1.250 or more in each
cell indicates a fully charged battery.
I have connected the charger properly but the ‘CHARGING LED’
does not come on.
In some cases batteries can be flattened to the point where they have
very little or no voltage. This can occur if a small amount of power is
used for a long time, for example a map reading light is left on for a
week or more. 7-Stage chargers are designed to charge from as lit-
tle as 12V charger 2.0 Volts and 24V charger 4.0 Volts. If the voltage
is lower than 2.0 Volts and 4.0 Volts use a pair of booster cables to
connect between two batteries to provide more than 2.0 Volts and
4.0 Volts to the battery being charged. The charger can then start to
charge the battery and the booster cables can be removed.
Can I use the charger as a power supply?
7-Stage chargers are designed to only supply power to the battery
clips when they are connected correctly to a battery. This is to pre-
vent sparks during connection to the battery or if connected incor-
rectly by mistake. This safety feature prevents the charger from be-
ing used as a ‘Power Supply’. No Voltage will be present at the clips
until connected to the battery.
How can I know what stage the battery charger is in?
Compare the LEDs on your device with the explanation in the section
“Featuers” to determine the current charging stage.
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