Quote:
quote:Originally posted by EagleRunner
Everything I have read on this says if you are replacing batteries in a dual battery system, both batteries should be replaced at the same time. This serves two purposes; first both are identical and secondly, both are the same age. A weak or older battery could drain a new one in short order, rendering your battery system incapable of sustaining a load.
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Just to bring me up to speed, does this mean I should buy a second battery.I had to replace one of my TV batteries last year. Should I also replace the other? I have an '02 F350 7.3. One battery is OEM and the other is now 1 year old.