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<p>[QUOTE=&quot;Terlingua, post: 12223094, member: 324541&quot;]I believe most of the larger fleets that hire new drivers have stopped spec&#039;ing diesel APUs on the trucks.&nbsp; They either rely on opti-idle, which auto-starts and stops the engine when the batteries get too low and for cooling/heating, or a combination of opti-idle with a battery powered EPU.&nbsp; 1200-1500 watts seems pretty standard for the inverter rating.&nbsp; I haven&#039;t had a truck with opti-idle yet, but I would think it should keep the batteries up as long as the inverter is large enough to handle the load.&nbsp; My current truck has a diesel APU, but only because it&#039;s one of the older ones in the fleet.&nbsp; They&#039;re getting to be more rare as the older trucks are cycled out.[/QUOTE]</p><p><br /></p>

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