Gonna toss my 2 cents worth again, lol. When you run multiple batteries, best practice is to run your circuits off opposite ends of the buss bar. Say bats "A, B, and C" are your 3 bat bank. Hook your positive lead the A end of the pos buss, your ground to the C end. Hooking both to the same end can result in a single battery handling most of the load. Another often neglected test when you get charging problems is to check for ac leakage in the alternator diodes. Charge your bat(s), fire up the engine, then hook an ac voltmeter between your hot and ground. If you get ac, any ac, it's killing your bats nice and slow. It's also a "slow leak" drain on your bats. A single diode being "just a little reverse bias leaky" can make you spend dough on bats better spent on groceries, lol. Some ac meter schemes will show a reading when hooked to DC however. To eliminate false reading, check both running and engine off. Should read the same on ac scale. If you see a volt or more difference, guaranteed leakage. Love the channel Gordon!

CLR and hot water cleans all that stuff off quickly.

Excellent video’s Gordon.Educational and informative.Thanks so much from Edmonton, Alberta!!

Every time I had to reuse an old battery. It would shorten the new battery's life. I did it a few years ago. My truck took 4 battery's, and by using 2 of the old ones that tested good. The 2 new ones, only lasted 14 months. But when I would put all new ones in place. I would get 3 to 5 years out of them.

Sr. Gordon excelente video y sobre todo me fue de mucha utilidad para cuando conecte mis baterías, que Dios lo bendiga, un abrazo.

With good batteries and a gear reduction starter and good cables and ground connections. That Detroit would spin over in 0 degree weather.

Wrap the red cable on the negative side with black electrical tape

Watching your classic vids💲📺❤

Thank you for your excellent videos

Good information

The spark at 10:30 when connecting the ground strap to the middle battery negative post indicates there is a parasitic draw, which can cause the batteries to go dead over time, if the truck is not run.

anybody else see the sparks fly when The starter kicked? your youtube timeline indicator may be in the way.. ? (min:17:02)

Keep the videos coming!

Gordon, how do you test an alternator? Can you do a video please. Thanks for sharing.

Have a question Gordon. My truck sat for awhile and my inverter ran the batteries down I have driven a few days now and mostly been starting ok but sometimes when I try to start it the starter locks up just makes a clunking instead of rolling over is it the starter? Or are my batteries still low? I never had starter problems before it's a detroit like yours.

to check battery should have each one unhooked the way u did was pulling from other one on + side

Every three to five years you wanna replace the batteries. Doesn't matter if it's a semi or a car

Well you keep saying this old truck. Well that old truck will last longer then this new crap. Last winter I had to run down to erie pa from buffalo in the wrecker to do a tractor swap for yrc. The unit I was bringing back from pa went into derate mode. Well I showed up and the driver asked me. That wrecker got def on it. No sir that's a 93 kenworth with a 60 series and a 13 speed. We buy or build order stuff without the def. He said lucky you lol. It was freezing cold that night lucky the tractor stayed running to keep him warm

Question sir, when I check my batteries while connected parallel it shows a lower CCA than when they are individually tested. Am I doing something wrong or are my cables bad? Voltages on both batteries are the same.

Gordon can you explain how a non-mechanic truck driver can jump start a 3 battery setup? Is there a way to do it with a $600 pro mechanic style jumper? Got a dead kenworth right now and in-lieu of trickle charging each battery with a 12-volt charger I'm looking for way to jump start. Any help appreciated, thanks

Where do you buy the battery nuts with the open threads?

you mentioned that the original 9/16s nuts that go originally with the batteries tend to get loose and thats my case big time any suggestions on how to eliminate that problem budd?

That a Boy Gordon

I think you need to look at the ground on the frame it shot out sparks at 17:02

hoooopi.

...Those 'Continental' batterys....how good are they....what kind of $$$ and life do you get....nice job cleaning all the 'semi-conductor' dirty stuff.....!

I can charge Solar panels

Gordon - where do you live?

Dead cells