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High ampmeter reading not charging

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My 520hc has a high amp meter reading but the battery looses charge over time.Need information on what to check what should the readings be

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if it's losing charge over time, then something is still consuming power. You may need to check switches, lights, etc with a meter. 


It could be that the ignition switch is broken...

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You could also have a bad battery.

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Save Old Iron

First check to see if the ammeter returns to a "0" indication with the tractor turned off.  If the meter is offset to a positive reading with engine off, replace the gauge or mentally subtract the amps displayed when off from the amps displayed when charging.


If the ammeter correctly shows a high charge all the time, measure the battery with the tractor off. A classic dead cell battery will read about 10.something volts and never charge to 12.6 volts. This can also be checked using an external battery charger.


Check your charge circuit. Engine off, battery should read around 12.6 volts if fully charged. With the engine running, 13.8 to 14.5 ish volts should be at the battery terminal.


There is a post in the instructional section on checking for parasitic current draw with the engine off. Check out that post or use the search feature for the word parasitic.

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FYI - If you have a 520H you do not have an amp meter, you have a volt meter.

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