Darryl&Rita Posted January 23, 2019 Report Share Posted January 23, 2019 Freightliner and Peterbilt in Fontana. I guess the golf shirt crowd doesn't need to service their HDT's. Try the Ford dealer at Palm Springs Motors, they're claiming a commercial vehicle division. ETA: Too far for me to travel over there to help with the battery swap. I have been wrong before, I'll probably be wrong again. 2000 Kenworth T 2000 w/N-14 and 10 speed Gen1 Autoshift, deck built by Star Fabrication 2006 smart fourtwo cdi cabriolet 2007 32.5' Fleetwood QuantumPlease e-mail us here. Link to comment Share on other sites More sharing options...
Randy and Helen Posted January 23, 2019 Report Share Posted January 23, 2019 Looked on line and desert battery is listed as a battery supplier. Mine are Deka but interstate also supplies a group 31 battery with center post on the ends. I suspect that two 12 volts side by side would have the same dimensions from one brand to the next for a group 31. Desert battery is located right off the 10 freeway but any interstate battery dealer that sell truck batteries should have or could get. That phone number is 760-346-3762 Link to comment Share on other sites More sharing options...
hemsteadc Posted January 28, 2019 Author Report Share Posted January 28, 2019 Well, I'm a bit confused now. I thought weak batteries and voltage readings sort of went together..maybe not. They've been holding 12.6-12.7 for several days now, but I still have the struggle when starting. Can batteries show a good charge and hold one but still be weak? Link to comment Share on other sites More sharing options...
Randy and Helen Posted January 28, 2019 Report Share Posted January 28, 2019 Is that for each battery Link to comment Share on other sites More sharing options...
GeorgiaHybrid Posted January 28, 2019 Report Share Posted January 28, 2019 You can have batteries that have the correct voltage but will not start your truck if the battery connections are corroded and or loose. If your batteries are reading 12.7 volts, check to see if all of the posts and connections are clean and tight. You will also need to check the connections at the ground where they occur. 2017 Kenworth T6802015 DRV 38RSSA Elite Suites2016 Smart Prime Link to comment Share on other sites More sharing options...
DQDanny Posted January 28, 2019 Report Share Posted January 28, 2019 batteries can show good voltage, or a surface charge, but still not have the amps to spin that starter. The batteries are beginning to sulfate or short between the plates. I have seen this personally, and I too was totally confused as to the condition you are describing. You could have only one cell beginning to fail & the rest are good. This will make accessories that require 12 volt appear to work, but really only the ones that require small amps properly work. It takes a proper "load" test to determine the health of the batteries. The batteries probably have to come out to do this test. Link to comment Share on other sites More sharing options...
hemsteadc Posted January 30, 2019 Author Report Share Posted January 30, 2019 Yes, both batteries measure the same. Link to comment Share on other sites More sharing options...
jenandjon Posted February 8, 2019 Report Share Posted February 8, 2019 Use a load tester. They may show 12 now but with a load a bad battery will drop real fast. Farmer, Trucker, Equipment operator, Mechanic Quando omni flunkus moritati-When all else fails, play dead I'm a man, but I can change, if I have to, I guess. Link to comment Share on other sites More sharing options...
hemsteadc Posted February 17, 2019 Author Report Share Posted February 17, 2019 I've been watching the batts closely. They charge up and hold 12.5+ for days. I started it yesterday after putting it on the block heater for a couple hours. Started right up, no problem. I'm wondering if there's something else going on.... Link to comment Share on other sites More sharing options...
Cotreker Posted March 19, 2019 Report Share Posted March 19, 2019 Since your batteries are difficult to reach I am only guessing that you are not adding distilled water on a regular basis? Have you tested the acid with the floating balls menthod? My guess is that the acid level is low and the plates have been damaged. Terminals need some TLC, when replacing make sure to use plenty of dia-electric greese. Your application is a good one for AMG type batteries, they need no water, well worth the money. Volvo 670 / 2006 10-Speed ATV's & Sleds 2017 Host Mammoth Slide-In Camper on Deck Jackalopee Build article published here Link to comment Share on other sites More sharing options...
hemsteadc Posted March 19, 2019 Author Report Share Posted March 19, 2019 They are not hard to reach, they are AGM. Don't need grease. I haven't seen any batteries for my truck that require watering. Link to comment Share on other sites More sharing options...
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