What Is The Capacity Of Battery Used In Electric Bikes?
One of the first questions new e-bike owners ask is, “How far can I ride between charges?†While battery capacity gives you a rough idea of how many miles you can go before needing to recharge, it’s just one piece of the puzzle. A larger battery doesn’t always mean a better experience — your riding style, terrain, and the type of motor system all play a big role in how long your battery lasts. In other words, a bigger battery isn't always the best choice. It's not just about size — it's about how efficiently the battery is used and how well it works with the rest of your bike's components. If you're confused by terms like volts, amps, or watt-hours, don’t worry — we’ve got you covered. Below, we break down what these numbers really mean and how they affect your e-bike’s performance in real-life situations. Over the years, e-bike battery technology has come a long way. This has made electric bikes more efficient, reliable, and eco-friendly — making them a great alternative to gas-powered transportation. The most common type of e-bike battery today is lithium-ion (Li-ion). These batteries are lightweight, powerful, and have a longer lifespan compared to older technologies like lead-acid or nickel-metal hydride. They also offer greater flexibility in design, allowing them to be integrated into the frame of the bike for a sleek look. At Story Bikes, we use high-quality 36V 7AH Samsung Lithium Ion batteries. These batteries charge quickly — from empty to full in just 3 hours — and are designed to last through daily commutes and weekend adventures. Now that you know the type of battery your e-bike uses, you might be wondering what those abbreviations like V, AH, and WH actually stand for. Let’s break it down: V (Volts) – Volts measure the electrical pressure in a battery. Higher voltage usually means more power, but it also depends on other factors like the motor and rider weight. AH (Amp Hours) – Amp hours represent the total energy a battery can hold. Think of it like a fuel tank — the higher the amp hours, the more energy the battery can store. WH (Watt Hours) – Watt hours are calculated by multiplying volts by amp hours. For example, a 36V 7AH battery equals 252 watt-hours. This number gives you an estimate of how long the battery will last under normal conditions. While these numbers are useful, they don’t tell the whole story. The actual range of your e-bike depends on how you ride, the terrain, and the efficiency of the motor system. Your riding style plays a major role in how long your battery lasts. Riding uphill, accelerating frequently, or using high levels of pedal assist will drain the battery faster than a steady, low-assist ride on flat ground. Another key factor is the type of pedal assist system (PAS) your e-bike uses. There are two main types: cadence sensing and torque sensing. Cadence sensing systems detect when you’re pedaling and provide assistance based on your speed. However, they aren’t as responsive or efficient — they often apply power even when you're not pushing hard, which can waste battery life. Torque sensing systems, on the other hand, measure the force you apply to the pedals. This allows the motor to respond more precisely, giving you exactly the right amount of help when you need it. This makes for a smoother ride and helps conserve battery power, especially on hills or during stops. We use torque sensing PAS in our e-bikes at Story Bikes. This technology provides a more natural, responsive ride and helps extend your range. Depending on the assist level, you can get up to 45 miles on a single charge. Battery capacity is more than just numbers on a spec sheet. While volts and amp hours give you a starting point, the overall performance of your e-bike depends on how the battery is used, the motor system, and your riding habits. A well-designed e-bike with a mid-sized battery can still offer excellent range if it’s built with efficiency in mind. Whether you're commuting to work or exploring the countryside, choosing the right battery and riding style can make all the difference. If you're considering an e-bike, check out Story Bikes. We offer a variety of models — including step-through, road, and commuter bikes — at affordable prices. Plus, for every bike we sell, we donate one to a student in Zimbabwe.
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What Kind of Batteries Do E-Bikes Use?
What Do These Terms Mean?
What Else Affects Battery Life?
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