Question about Air Tools & Compressors
Where can I find an electrical schematic, wiring diagram, or a photo of the internal wiring of this battery charger?
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Posted on Jan 02, 2017
Intertherm does not offer a wiring diagram for the E1 series anymore. So I have included a link to the E2 series. They are very similar and you may find this service manual helpful for whatever problem you may be having.
Posted on Apr 11, 2009
The service manual has a diagram, but you need to zoom in to read the colors.
You can download a free one at
Posted on Nov 21, 2009
Relax, the charger is working fine. What it is doing is charging the battery to 15.5V. During this time, the "charge complete" LED is off, and the current meter shows the needle going to the right. When 15.5 volts is reached, the current is shut off, the needle goes back to the left, and the LED goes on. When the battery voltage drops to 13 volts, the current goes on again, etc. At the beginning, with a very depleted battery, the needle will be towards the right, then as the battery gets charged close to full capacity, the needle will bounce back and forth because the charger is feeding current in short pulses. Towards the very end of charging, the needle will stay longer and longer at the left end (the LED will be ON), and spend less and less time to the right (LED will be ON for longer periods, and "blink" OFF less and less). Finally, at full charge, the LED will stay ON, the needle won't make excursions to the right, etc.
Posted on Feb 06, 2010
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