![]() For example, a laptop uses 5 amps of power.This will give you the total power consumption of that appliance for the day. Multiply the number of amps each application requires by the number of hours you plan on using that appliance per day.Determine how many amps each application requires in order to run.Start by making a list of all of the appliances on your RV.Calculating the total power (in amp hours) that your appliances require per day will help you determine the size and number of batteries you need to run your applications. How Many Batteries Do I Need to Power Multiple Appliances?Ĭhances are you're probably going to be powering multiple applications in your RV simultaneously, which may exceed what a 100Ah battery can provide. Using a 100Ah battery, you could power your laptop for 2.5 days before the battery needs to be recharged. If you plan on using it for 8 hours a day, you will require 40Ah of capacity for a single day. So, let's break that down into more concrete terms. A 100Ah hour battery will supply 1 amp of current for 100 hours, 2 amps for 50 hours or 100 amps for one hour. How long it can run depends on the electrical requirements of the applications you're powering and how many of them there are. How Long Will a 100Ah Battery Last?Ī 100Ah battery has 100 amps of capacity at its disposal. To cater to high voltage systems, 12V batteries can be used, with caution, in series. Keep in mind though that if one of those two batteries goes bad, you won't be able to use the remaining 6V battery to power your appliances. ![]() You can either go with a 12V battery or use two 6V batteries in series. Most RV appliances and lighting require 12 volts of electricity. RVs typically use 12V batteries, but 6V, 12V, 24V and 48V systems exist. For that reason, it's important that the voltage of your battery matches the voltage requirements of any appliances it will be powering. Likewise, appliances are designed to operate at a specific voltage. Batteries always have a fixed average voltage. It is important to make sure that your battery's voltage matches that of your appliances. Why is It Necessary for the Appliances to Match the Voltage Source? It's also reasonably priced, takes up relatively little space and packs enough energy to run lights, charge cell phones, and run small accessories. The 100Ah 12 volt sealed lead acid (SLA) battery size is widely used because it is the largest capacity 12V SLA battery that can be easily moved by one person. Why are 100Ah Batteries So Popular for RVs? Amp hours would tell you how much water will flow through the hose over the span of an hour. Voltage is the hose's water pressure and watts are the amount of water coming through the hose. ![]() In this analogy, amps represent the speed of water flowing through the hose. How is the Flow of Electricity Similar to the Flow of Water?Īn easier way to understand the terms above is to compare electricity to water flowing through a hose. A 100Ah battery means that the battery can supply a load of 100 amperes in one hour, or 50 amperes for two hours or 10 amperes for 10 hours. Watts are calculated by multiplying the number of amps by the number of volts.Īh rating of a battery indicates the battery capacity or the amount of ampere hours it can handle.
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