Picking the best battery for your RV, boat, UTV, or other gadget or system is practically an art. You need to know how much battery juice to have on hand. That’s where amp hours (Ah) and watt hours (Wh) come into play. If you’re new to the world of batteries, these terms might be a bit confusing. We understand, but we’re here to simplify things.
In this post, we’ll break down amp hours to watts, and other important terms you may hear when referring to a battery’s power. We’re here to explain why these terms matter and what to consider when looking for the right battery. So keep reading to learn more!
Amp Hours & Watts Explained
If you’re hunting for a new battery, you’ll likely hear the terms amp hours and watt hours tossed around. For this reason, we’ll explain both in more detail and the purpose of each measurement. That way, you have the full scope and can more easily connect how these measurements work and why they’re vital.
Amp Hours: Endurance
Batteries have a capacity rating we typically measure in amp hours. This rating tells the user how much charge the battery can store and deliver over a period of time. It’s how much stamina your battery has (or doesn’t have). To simplify things, imagine amp hours as your battery’s stamina. Amp-hours (Ah) measure the electrical charge your battery can dish out in a given hour. Like a marathon runner who can keep going and going, the higher the amp hours, the longer your battery can sustain its electrical flow.
So in general, the higher a battery’s amp hour rating is, the longer its run time will be. If you’re running a large device like an RV, you’ll want a battery with a higher Ah rating than a small kayak trolling motor battery, for example. Because an RV will likely power multiple devices for many hours. And because your battery can power your device for longer, you won’t have to recharge or replace it as often.
Watts: Total Energy
Watt Hours are the champ of battery metrics because they give you a broader picture of a battery’s capacity. How? By taking into account both the current and voltage. Why is this important? Because it can come in handy when comparing batteries with different voltage ratings. Watt Hours gives you the total energy stored in a battery. It’s like knowing how much work that battery can do overall.
Calculating watt hours is pretty simple. Factor in the current (amperage) and the voltage of the battery. Here’s the equation: Watt Hours = Amp Hours × Voltage.
Picture this. You have a battery with 10 amp hours and a voltage of 12 volts. Multiply them together, and voila! You have yourself 120 Watt Hours. That means your battery can deliver a total of 120 units of energy. See?
Knowing your battery’s watt-hour measurement is helpful in several ways. It’s great for comparing batteries against one another, helping you size up battery backup systems, letting you know how energy-efficient your battery is, and more. So amp hours and watt hours are separate measurements, both critical for informed decisions.
Amp Hours Vs Watt Hours
By now you’ve probably realized that amp-hours and watt-hours are different but share a very close relationship, especially in terms of time and current. Both values can help you determine the performance of a battery based on your boat, RV, or other application’s energy requirements.
Again, amp hours measure a battery’s capacity to hold a charge over time. Watt hours are the measurement of the total energy capacity of your battery over time. This information can help you determine which battery is best for you. If you want the watt-hour ratings, you can change amp hours to watt-hours using the following formula:
Watt Hour = Amp Hour X Voltage
You can also change watt hours to amp hours using the formula below;
Amp Hour = Watt Hour/Voltage
At LithiumHub, we’re passionate about LiFeP04 technology and offering our customers the best in terms of technology, efficiency, performance, and customer service. If you have questions or need assistance, contact us today! And be sure to look through our huge selection of Ionic lithium batteries. We offer 12-volt, 24-volt, 36-volt, and 48-volt batteries with different amp-hour ratings, so you can find the battery that’s best for you! You can even connect batteries in series or parallel!
