Chris Bryant wrote:
Most RV generators do not charge the battery, they power the converter, which charges the coach battery. That is why the coach battery starts it.
Chris said it, but that said there are a few exceptions, and in a very few cases (Relative) there is a 3rd battery JUST for the generator.I have found my Aux-Start or Emer-Start button (Also known as boost on some RV's) works both ways.. If the house is low, holding it will let the Generator start,, hold till the transfer switch transfers.
Lead-Acid Batteries
Lead-acid batteries are the most common type of battery used in generator systems.
They are also used in cars and trucks. Lead-acid batteries have some advantages and disadvantages.
They are typically less expensive than other types of batteries and have a lifespan. of about 2-3 years. However, lead-acid batteries require more maintenance during that time than other types of batteries, and are not as efficient as nickel-cadmium batteries.
How Do Lead-Acid Batteries Work?
Lead-acid batteries are the oldest type of rechargeable battery. Lead-acid batteries were invented in 1859 by French physicist Gaston Planté and are the forerunners of the modern automobile battery and are still primarily used in vehicles.
Lead-acid batteries contain lead and sulfuric acid. The lead serves as a positive electrode, and sulfuric acid is used as an electrolyte. When lead and sulfuric acid are combined, they create a chemical reaction that produces electricity.
Advantages
Lead-acid batteries have several advantages over nickel-cadmium batteries:
• They are less expensive than nickel-cadmium batteries. However, due to the shorter lifespan, the cost can be higher than a nickel-cadmium battery.
• They are less likely to suffer from self-discharge, meaning they can hold their charge for extended periods (about 3-4% per month).
• They can provide a large amount of power when needed.
• They are easier to dispose of and recycle than nickel-cadmium batteries.
Lead-acid batteries have some disadvantages when compared to nickel-cadmium batteries. This includes:
• They are heavier than nickel-cadmium batteries.
• They have a shorter life cycle.
• They are more likely to leak acid, which can damage the device.
• They also require regular maintenance, such as topping up the water level and cleaning the terminals.
• They are more sensitive to temperature changes, which can shorten their lifespan.
• They can produce hydrogen gas when charging, which can be explosive if it builds up in a confined space.
• They are not suitable for fast charging.