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HDLARRY · 05-29-2009, 05:28 AM

Ray,

I think what the rep is saying is that as long as the voltage does not drop below 9 volts (during startup) it will indicate 100% battery life. I may be wrong but the 12.8V required for startup is an "at rest" reading if I remember correctly.

Whenever we push the start button, current from the battery sky-rockets and the voltage accross the battery goes down. So they are just watching how low this voltage drops to calculate how much relative battery life we have left.

Sounds like the monitor is latching onto the lowest battery voltage it sees and then holds it for indicating relative battery life. Just my best guess.

Wish I had brought my uninstalled battery monitor up here to Alaska with me. We have all the bench test equipment needed to figure out how this thing actually works.

05-29-2009, 05:28 AM	#25 (permalink)
HDLARRY Member Join Date: Oct 2007 Location: Tacoma, WA Posts: 317 My Bike(s): 05 Bulldog, 03 Road King My Biker Photos Rep Power: 3	Ray, I think what the rep is saying is that as long as the voltage does not drop below 9 volts (during startup) it will indicate 100% battery life. I may be wrong but the 12.8V required for startup is an "at rest" reading if I remember correctly. Whenever we push the start button, current from the battery sky-rockets and the voltage accross the battery goes down. So they are just watching how low this voltage drops to calculate how much relative battery life we have left. Sounds like the monitor is latching onto the lowest battery voltage it sees and then holds it for indicating relative battery life. Just my best guess. Wish I had brought my uninstalled battery monitor up here to Alaska with me. We have all the bench test equipment needed to figure out how this thing actually works. __________________ HDLarry Last edited by HDLARRY; 05-29-2009 at 05:46 AM.