Oddly enough I just bought a battery load tester to check my 680. Shows excellent voltage and load capability. Just won't turn the engine more than a few revolutions before it can't any more, when cold. And many are probably laughing at 55-60 degrees as cold....and you're right! Not very....
I sent mine back to Bohannon battery. They confirmed it was not any good and sent me another one. In the mean time I borrowed one from another rv'er here. It was a 2010. He changes batteries every two years and had a couple sitting around. That one works fine in my o320 and the new one is on the shelf.
Was looking into getting a new PC680 for first engine start & noticed on the Odyssey site that it's a PC680-P. Unless I missed something, I think the "-P" is new. Just wondering if this is the same PC680 that Spruce & Wicks sells, & what we use on our RVs.
__________________ Sam Evans
RV7-A O-360 C/S
VAF#812
Had mine for 14 months, then it did not want to start my -4. Like it had no capacity. Did the desulfurization and back to normal. Of course it was after I had already ordered a new one
Oddly enough I just bought a battery load tester to check my 680. Shows excellent voltage and load capability. Just won't turn the engine more than a few revolutions before it can't any more, when cold. And many are probably laughing at 55-60 degrees as cold....and you're right! Not very....
If a tester shows good voltage AND capacity, I wonder if the culprit may be the starter contactor. Several threads talk of weak starting when the contactor "contacts" get pitted and worn.
Has anyone figured this out yet? What's the difference between the PC680 and the PC680-P.
Mine is 8 yrs old and I am going to buy a new one. Planning to replace the Battery and starter contactors at the same time.
__________________
Bobby Hester - Builder/Pilot/A&P
Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
Web site: http://www.newtech.com/bobbyhester/RVSite.htm
Dec. 2019 VAF donator - alot better than any magazine subscription
I have a PC680 and Battery Tender Plus. I always connect the Battery Tender to the PC680 after every flight. Whether it sits for a day or a week, it's always plugged in no matter what. I've done this without fail for 2 years and have not had any problems whatsoever with the battery. All the literature I've come across says that to ensure long term reliability, you need to maintain the batteries on a float charger. So far I've been happy with the results. Just another data point for you.
I have done the same thing on my RV6-A since 2006 and my 9 year old PC680 cranks the 0-360 like new!
I do have a new...just purchased PC680 on the shelf ready just in case.
680
Linear Mode
