Dual Batteries
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Junior User
Joined: Jan 2005
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From: indian rocks beach fl
Dual Batteries
I just traded my 05 250 gas for a 06 350 dually due to a major change in my towing needs. The 350 had to have certain options so I settled for one that had a camper package. It wasn't till I got home to find two batteries which I guess is part of the camper package or do they all come this way? Not to sound stupid, but some education on dual batteries. I assume they are for running extra accessories one would put on the truck. Do the batteries discharge at the same rate , is one battery in reserve. I wonder if this is a liability and increased cost down the road. If it comes with two batteries, I guess two will always have to be installed?? My new truck is to tow a large RV a few times a year. A primer on dual batteries would be appreciated. Thanks
Senior User
Joined: Sep 2005
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Diesels are all about heat and compression, so they take extra torque and heated glow plugs to start up. That's why there are two batteries. Also, should also have a dual alternator system on your PSD that puts out 260amps, so you get the bonus of a higher capacity system to run accessories, recharge batteries, etc. The downside is you have to maintain and replace two batteries at a time.
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