Marine & Deep Cycle Batteries

Deep Cycle Battery Frequently Asked Questions
https://www.solar-electric.com/deep-cycle-battery-faq.html#Battery%20Size%20Codes

  Topics include: (Go to link, above for in-depth information!)

• -What is a Battery?
  -Types of Batteries
  -Battery Lifespan
  -Starting, Marine, or Deep Cycle?
  -Deep Cycle Battery as a Starting Battery?
  -What Batteries are made of
  -Industrial Batteries (fork lift type)
  -Sealed Batteries
  -Battery Size Codes
  -Gel Cells (and why we don't like them)
  -AGM Batteries (and why we do like them)
  -Temperature Effects
  -Cycles vs Lifespan
  -Amp Hours - what are they?
  -Battery Voltages
  -Battery Charging (Here is where we get into the real meat)
  -Charge Controllers (for wind/solar)
  -Mini Factoids - Some small facts about batteries
  

Rescuing And Restoring Almost Dead Lead-Acid Batteries
https://www.askaprepper.com/rescuing-and-restoring-almost-dead-lead-acid-batteries/

  Most batteries in cars, trucks, motorcycles, and boats, as well as solar electric back-up systems, continue to be the lead-acid batteries. You all know them. They can last a very long time, if they are cared for properly. That means:

    They must be kept at full charge
    They must be watered regularly (if not the sealed type)
   Their terminals/posts must be kept free of corrosion.

But I am sure almost all of us have mistreated them at one time or another.

From a prepper’s point of view, you need to know about batteries well enough to have them available and fully charged in an emergency.   ---CONTINUED---

The 12volt Side of Life (Part 1)
http://marxrv.com/12volt/12volt.htm

Welcome to the page of all things 12 Volt! The information here was either excerpted from various sources on the web and in the public domain, or results directly from my personal experience. When researching battery specs for this page, I was amazed at the wide variance in some of the information. ---CONTINUED---

The 12volt Side of Life (Part 2)
http://marxrv.com/12volt/12volta.htm

OK, now that you know all about batteries and charging, lets put some of that stored energy to use. There are a lot of things that you can do to make your RV home more comfortable and energy efficient. There are even a few projects illustrated to spur your creative urges. ---CONTINUED---

For those of you that have a solar system with 12 volt batteries, no matter if they are car batteries, deep cell marine batteries, agm batteries or lithium batteries, when is the battery fully charged, half charged, etc..

From modernsurvivalblog.com, here's a chart on the voltage of batteries when charged or when they are dead:

https://modernsurvivalblog.com/alternative-energy/battery-state-of-charge-chart/