Sizing An RV Solar System: Part 3

Camper Mods, Solar, Technology, , ,

How Much Power Will Your Solar System Actually Harvest?

In Part One and Two of this series we discussed how to measure how much energy is used daily, how to determine needed power storage (what size battery bank), and how to size the solar array.

This post (Part 3) will take a look at all the components and conditions that impact how much solar power will actually be generated. This is the final step to see how the previous calculations will really work for a real world RV solar systems. First we need to define some terms.

Continue reading Sizing An RV Solar System: Part 3 →

New Telescope Remote Power System

Camping, Telescope, ,

Do Lithium (LiFePo4) battery deliver on the manufacturer’s claims. We’ll explore my 30 month experience, which didn’t live up to expectations. But there are some factors that need to be investigated as part of my conclusion. Then I’ll share me new LiFePo4 battery system for my remote telescope kit.

A couple years ago I shared my remote kit  set-up for astrophotography. It included a Lithium (LiFePo4) battery bank consisting of three 16AH lithium batteries wired in parallel. I built this in April of 2021 and was my first experience with LiFePo4 batteries.

Continue reading New Telescope Remote Power System →

Sizing An RV Solar System: Part 1

Camping, Solar, Technology, Telescope, , ,

Planning a Simple Small Solar System

This post will detail how to calculate a small solar system including how to determine what battery and solar panels will be optimum.

I am following up on the two previous solar system posts:

  1. 20 Year Review of the TriMetric Battery  Monitor
  2. Solar Charge Controllers: PWM vs MPPT

It isn’t a theoretical exercise, but looks all the steps I followed for my small remote power system for my telescope rigs.

This system is smaller than what most people might want for a camper. Although it could work for a van setup. The methodology is important and is applicable for any RV Solar System planning.

Continue reading Sizing An RV Solar System: Part 1 →

Solar Charge Controllers — PWM vs. MPPT

Solar, Technology, ,
Fifteen Morningstar TriStar MPPT solar charge controllers hooked up in a parallel off-grid charging system

I can’t count the number of times on the internet (especially forums) I have seen the comment that a MPPT solar controller is far superior to a PWM controller. Often times, if someone is seeking advice about their first RV solar system, someone will pop up and state they need MPPT without having any information about the other components that will be part of the system.

The bottom line is that MPPT is not superior to PWM solar charger. For specific systems one type can be better than the other. 

Let’s find out more about the MPPT vs PWM debate. If you are thinking about installing a RV solar system or expanding your current system which solar controller you choose is very, very important. Continue reading Solar Charge Controllers — PWM vs. MPPT →