RE: Light-Sport Aircraft Yahoo group Maxpro Battery monitor

Bill,

The most likely reason for,
"flashing red LED and the buzzer sounds (normally what the unit does if the voltage is way low)",
would be,
battery voltage low.
Can you borrow a multi-meter and measure the voltage across battery?
If it's more than 11, then measure the voltage on the two little wires going into this unit.

Did you start the engine using the battery?
If yes, did the battery sound strong?

If you keep the battery charging (hopefully) for awhile, does the unit stop buzzing?

Mike

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To: Sport_Aircraft@yahoogroups.com
From: wrhobson@aol.com
Date: Wed, 24 Mar 2010 20:43:44 +0000
Subject: Light-Sport Aircraft Yahoo group Maxpro Battery monitor

 

I realize this is a long-shot but I thought it would be worth a try. I bought a little doo-dad to serve as a low battery/alternator failure indicator (a whopping $6.00). It's called a Maxpro 3S and someone on this forum suggested that I put two diodes in series in the circuit. The unit seems to work fine when the engine isn't running, but when I fire the engine up and kick on the alternator the unit goes to a flashing red LED and the buzzer sounds (normally what the unit does if the voltage is way low). I (of course) have lost the little paper that came with the gadget, but I'm wondering if maybe it does this because of an OVER-voltage situation. Does anybody happen to know anything about how these circuits are typically built? Thanks.

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