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I am getting the battery light on the dash. Took it to get the alternator tested but the tester said the battery is good but needs charged. Now I know from previous experience with the 88' F250 IDI I had that it could be one or both batteries. And there is no way to really know. So on that truck I converted it to a single Series 31 battery. And it made a huge difference for the better. So what I want to know, is it possible to convert a 2004 F250 to a Series 31 battery and just remove the drivers side battery and cables? If a 31 is to big physically, what is the biggest that will fit in that tray? And will a single battery give enough CCA to start the truck? I live in central NC, so cold weather is not a huge factor.
So I went and got 2 batteries instead of a single conversion. Only because nobody had any info for a single conversion. But the battery light was flashing while accelerating and stays on when idle or driving at constant speed. So it has to be the alternator. What a pain to get that thing off.
So I went and got 2 batteries instead of a single conversion. Only because nobody had any info for a single conversion. But the battery light was flashing while accelerating and stays on when idle or driving at constant speed. So it has to be the alternator. What a pain to get that thing off.