![]() ![]() The diamond-plated basement will feature a “step out” on both sides that not only houses multiple batteries, but also an inverter. One of the biggest changes to the Cirrus 820 exterior will be the revamped basement. While the floorplan has not been modified, the added upgrades and interior design changes greatly enhance the look and functionality of the camper. According to the press release, the updated 820 will come with aesthetic and functional design changes, component updates, as well as additional features and an interior color palette that will be refreshingly unique. For additional information on truck camper batteries and battery charging, check out our introductory Truck Camper Battery 101 article.Īsk Mike is a new feature that will be published from time-to-time here at Truck Camper Adventure.Ohio-based NuCamp RV, manufacturer of quality truck campers and teardrop-style trailers, recently announced the launch of its redesigned Cirrus 820 truck camper for 2021. We’ve published two articles outlining how this modification can be done in your truck and camper and something that we will soon be doing with the Truck Camper Adventure Rig. The benefit with this approach, of course, is that your truck camper batteries will receive a full charge each and every time time you drive your rig. The amount of charge, of course, depends on the alternator in your truck and the solenoid’s quality, but results this high are pretty common. A dedicated alternator charge system using 2 AWG cable can provide up to a whopping 100 amps for battery charging. The OEM charge circuit found in most trucks uses only 10 AWG wire that provides a trickle charge of maybe 4 amps. Of course, a dedicated, heavy-duty alternator charging circuit would be a much better option. This is a relatively simple modification that can be accomplished by anyone with a basic understanding of DC battery circuits. For those who have this problem, we recommend installing a battery isolator in the alternator charging circuit. If you do not disconnect the tow vehicle when stopped for long periods of time, the RV battery will drain your starter battery.” Since the Cirrus 800 is an early model-NuCamp’s first truck camper-we emailed the company to see if this problem has been corrected and we are waiting on a response. When we asked Joe if he was sure he said that he had confirmed this with NuCamp who emailed him, “the only way to completely cut power to the truck camper is to unplug the 7-pin tow connector. Every alternator charge circuit should have a battery isolator or solenoid to prevent draining the truck’s starting battery when connected to the camper. We use the word problem because it is, a BIG one. Thanks, Joe, for letting us know about this problem. Keep up the good truck camper coverage and stay well. Maybe we will just continue to monitor the camper closely and unplug if we are in a situation when there is the danger of potentially impacting the truck battery. You have had good coverage of upgrading truck charging capacity, but with a heavy-duty alternator I have not gone that route yet where a battery isolator could be installed. Why is there not more talk of this? Is this unique to the Cirrus? We are really running on three batteries. With all the chatter about types of batteries and charging I have missed any mention of including the truck battery as part of the system. This essentially means the camper is running on it’s two AGM’s with solar AND the truck battery! I have confirmed this with NuCamp. While doing some electrical wiring, I rediscovered that the only way to cut power in the camper was to unplug the camper from the truck. Hi Mike! We have a 20 and a 2016 Cirrus 800. We recently received this question from Joe in Vermont about the alternator charging circuit in his Cirrus 800 truck camper:
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