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Indicator for lead-acid battery charger

Indicator for lead-acid battery charger
This unit is intended as an add-on for the many lead acid battery chargers that have no charge indicator. A green LED shows that the battery is connected with correct polarity. A red LED indicates that the battery voltage has reached its operatmg voltage, that is, the battery is fully charged. Ayel~ low LED functions as on/off indicator, that is,shows that the mains is connected.
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