

| Subject: | Re: Installing A Second Battery |
| From: | Mark McCulley |
| Date: | Tue, 16 Dec 1997 13:34:42 -0800 |
At 12:23 PM 12/16/97 -0800, Chris Uzzi wrote: >(1) I will be following the instructions listed at >http://www.vanagon.com/info/faq/. These instructions state "With this >configuration, the aux battery supplies cabin power whenever your >engine is not running." Does this include the 120V power sockets? Nope. You need to add something called an inverter to convert 12 VDC to 120 VAC. > For example, will I be able to plug in a heater or a laptop computer into >the power socket and get juice as if I was hooked up to a external power >source. Forget about running a heater off of your battery. Even if you had an inverter capable of supplying that kind of power, the heater would suck your battery dry in a matter of minutes. You can buy a small inverter for less that $100 that will nicely power a laptop. >(2) Referring to >http://www.vanagon.com/info/vehicles/beethoven/electrical.html I'm a bit >confused as to the purpose of "Getting a charge" procedure. Does the >trickle charger simply monitor the secondary battery's charge? Trickle chargers charge a battery very slowly over a long period of time. They are really designed to be used to maintain batteries in a charged state when they aren't being used. >someone explain in greater detail this statement from the above >procedure, "Another thing I wanted was to be able to plug my van into >the power grid and have my heater run right off the grid." What is meant >by "grid"? The grid refers to the country's power system, what you connect to when you plug something into a wall socket in your house. For examle, when you're camped out in the wilderness in your van, you're off the grid. When you pull into a RV campground and plug in to the 120VAC there, you're back on the grid. I believe the statement above is referring to the fact that a trickle charger generally won't supply very much power, so it's nice to have a bit more sophisticated & powerful charger that will supply lots of 12 volt power at the same time it's charging the battery(s). Such chargers cost quite a bit more money than trickle chargers, which can be obtained for $25 or $30.
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