Originally Posted by CuriosityBus
Okay, I need a crash course in batteries/solar.
Basically, I have no idea how many batteries or how much solar I'll need. I've never worked with electrical before.
The things I'm going to have in my bus requiring power are as followed:
1. Dual Zone Mini Split AC/Heater
18000 BTU's total. Roughly 8 hours/day without shore power.
Will run all night with shore power if it's hot enough out.
(I honestly have no idea what it will take to power this system. Any
advice would be much appreciated).
I would strongly suggest 2x 12000 units to keep everything on 120V and to simplify line set routing. Every other load on your list will be negligible compared to your AC demands.
2. Hamilton Beach 0.7 CU FT Microwave.
Walmart lists wattage as 700W.
Would I leave this plugged in 24/7 or only plug it in while using?
5-10 minute usage (not daily but for calculating's sake, we'll say
3. Stove that will run off propane.
I'm not sure whether this needs any power. I haven't researched it
Stove will not take anything really, but if the oven uses an electrical thermal igniter it will use quite a bit when oven is in use. Check the model
4. 9.9 CU FT Magic Chef Fridge
Will run 24/7.
Energy Consumption listed as 329 kWh/year.
329/365 = 0.901. 900W/day? I'm not sure how to calculate it.
I have a similar one and it uses about 100W when running. I have observed about 40 AH/day at 12V in cool weather.
5. Water Pump and Heater
I have no idea for this as I haven't planned my water system yet.
Pump will be negligible. Water heater should be propane. On demand is nice imo.
6. Laptop Charger
90W, roughly 2 hours/day.
7. Backup camera and GPS System.
Two things I'm not sure how they work yet, if you have either,
please let me know your average usage.
Should not be on your house system. Keep on chassis 12V system.
8. iPad and iPhone charging.
Roughly 1-2 hour increments, once or twice daily.
5 Watts for iPhone, 10 Watts for iPad.
9. LED Puck Lights.
Maybe 20 Max, depending on the size and placement.
Depends on what size, but if you are working with a decently sized bank, LEDs donít make much of a dent.
10. 32" Westinghouse Smart TV. (1-3 hours/day)
I don't know the watts on this.
I run a smaller color reference monitor and I donít even really notice the load.
11. Carbon Monoxide Detector. (24/7)
I believe that's everything that'll be plugged in and used on average. I plan on having a battery bank inside the bus, a generator (ideally as a backup only), and around 1600-2000W worth of solar on the roof.
If I'm missing anything that'll require power please let me know, and if anyone could help me calculate how much I'll need, that'd be great. I want to be able to go off the grid as much as possible, but on hot/really cold nights I'll plug in somewhere to run the mini split during the night.[/QUOTE]
If you have a propane furnace that takes a bit to run the blower.
My biggest notes are that it is near impossible to power AC with solar/batteries. If you are very well insulated, your chances go up. The reality is that you will probably need a generator for your AC. The cost and weight of batteries and panels will be huge for AC unless you are crazy well insulated.
I have a 400ah 12v bank and I can run 1 ton of mini split AC for a couple hours or so...