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Battery Chargers

Troubleshooting a Battery Charger:

1. No DC Output On Ammeter When Charger Is On.

Unplug the charger and make sure connections are secure.
Check for wall outlet for power.
DC circuit breaker is tripped. See "Charger Overload" below.
A dead battery (Specific Gravity near 1.000) shows very low output on ammeter. After 15 to 20 minutes the indicated current rises and normal charging occurs.

2. Charger Overload.

The charger is protected against overloads by a self-resetting DC circuit breaker. An overload is indicated when a full scale ammeter reading abruptly falls to zero accompanied by a distinct "click" of the DC circuit breaker as it trips. A 3 to 5 minute cooling off period is required before the breaker will reset itself. If the overload condition still exists, the cycle will repeat.

Listed below are the conditions that can cause the circuit breaker to trip:

A deeply discharged battery (Specific Gravity near 1.120). If the battery is in otherwise good condition, the circuit breaker may trip on and off several times until the battery recovers enough to allow a normal charge rate. If the tripping continues after 30 minutes, a larger charger should be used.
A battery with a shorted cell. A battery in this condition may cause the breaker to trip continuously. It will not accept a charge and should be replaced.
Charger leads are connected in reverse causing the breaker to trip continuously. May damage battery and charger.
Touching the charger leads together with the charger turned on. This causes a spark which is dangerous if near a battery and could severely damage the charger.
If proper hookup is observed and sparking does occur between charger clips and frame connection, DO NOT use the charger. Have it checked by a qualified service person.
CAUTION: Regardless of what is causing the overload, unattended or routine operation in this manner could result in serious damage to the charger and the battery.

3. Charge Rate Does Not Go To Full Amp Rating Of Charger And/Or Falls Quickly When Charger Is Turned On.

4. Current Indicated On Ammeter Falls Slightly Showing No Further Change.