You will see this marketed using the compound’s chemical formula LiFePO4.Īccording to RELiON, “LiFePO4 batteries can be continually discharged to 100% DOD and there is no long-term effect. The most common type of lithium battery found in RVs is lithium iron phosphate. They work on completely different chemicals and metals than lead-acid batteries. They combine the maintenance-free aspect of AGM with the ability to withstand a much deeper depth of discharge (DOD). Lithium batteries are the newest kid on the RV battery block. Once again, battery manufacturers recommend only discharging these batteries down to 50% before recharging them. RVers like AGM batteries because they don’t require much maintenance, and when used properly, they typically last longer and can charge faster than open FLA batteries. Sort of like holding a soaked sponge to a plate. These are also lead-acid batteries, but instead of a free-floating liquid sloshing around, their electrolyte solution is held in an absorbent fiberglass matt. These are often referred to as sealed or maintenance-free because they don’t require you to add water. In other words, if your FLA battery says 100Ah, following best practices results in half or 50Ah of usable power. The important thing to note here is that it is recommended to only drain FLA batteries down to 50% capacity to get the most out of the battery life. If they are 6V batteries, they will be wired in a series to produce 12 volts. It is the least expensive type of battery, and RVs will commonly have either 12V or 6V versions of FLA batteries installed. This is the type of battery you have to maintain and add water to periodically. There are different types of deep cycle batteries used in RVs. Deep cycle batteries, on the other hand, are designed to output lower amp draws over a long period and to withstand being depleted and recharged regularly. Like the battery that starts your car or truck, starter batteries are designed to release a lot of power fast to turn over and fire an engine. Source: Amazon Starter Batteries VS Deep Cycle This sealed lead acid battery has the 100Ah capacity printed on the side. Typically the house battery (the one that powers your RV’s 12V system) will be labeled as a deep cycle battery, while the one used to fire up the engine will be a starter battery. Some RVs have more than one battery, and motorhomes will have a battery devoted to starting the engine and the rest will power the RV. A batterie’s amp-hours can be found either on a sticker on top of the battery or printed on the side. Finding Your RV’s Battery Capacityġ2V DC battery capacity is typically rated in amp-hours abbreviated as Ah. We’ll also touch on the most popular boondocking recharging methods to increase your boondocking capability. You will learn how to figure out your total battery capacity and two ways to estimate how long that battery capacity will last before recharging. For clarity, this article will assume that the question refers to how long your batteries will last without a charging source like solar or a generator. So you’ve decided to try boondocking, and like many before you, one of your first questions is How long will my battery last boondocking? It’s a pretty straightforward question, but the answer is relatively individualized to your RV and setup.
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