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nickdalzell1 · 12-06-2019, 08:12 PM

In my experience the 'incomplete' light comes on when the charger fails to reach the voltage threshold for a fully charged status cut-off within the timeout period (~16 hours). It's not a 'smart' charger aka a dv dt type, it just wants to reach a pre-defined voltage for x number of minutes to determine 'full.' If it doesn't get to that point it times out and throws that light.

Can happen if batteries get sulfation or if they're extremely low when the charge cycle starts.

12-06-2019, 08:12 PM	#4
nickdalzell1 Resident Curmudgeon Join Date: Oct 2011 Posts: 1,279	Re: Battery charger "Incomplete" issue In my experience the 'incomplete' light comes on when the charger fails to reach the voltage threshold for a fully charged status cut-off within the timeout period (~16 hours). It's not a 'smart' charger aka a dv dt type, it just wants to reach a pre-defined voltage for x number of minutes to determine 'full.' If it doesn't get to that point it times out and throws that light. Can happen if batteries get sulfation or if they're extremely low when the charge cycle starts.