Join Date: Dec 2013
Location: Puget Sound, and Allegheny County (PA)
I second MAZ4ME's comments. Additionally:
If the engine was unusually cold, there could be no problem that will outlast the cold spell. If the cranking was significantly slower than usual, that would be consistent with extra amperage required due to increased oil viscosity. Or, if the engine was not particularly cold, slow cranking could indicate battery resistance having increased near to the "useless for starting" point.
Since you have a voltmeter and a battery tender connection, you can use for former, connected to the latter, to assess battery resistance. The voltage should not drop below 5-6 Volts during cranking. Going below that would indicate excessive battery resistance or an extremely cold engine. If it was quite cold, I suggest waiting for warmer conditions before trouble-shooting (or even worrying much.)
BTW, "excess battery resistance" is approximately equivalent to the "cannot ... provide full amperage capacity" that MAZ4ME mentioned.
Last edited by Trepidator; 02-14-2019 at 07:17 PM.