Let’s talk batteries
<p></p><p>You've probably seen phones rated to have 5000mAh batteries or power banks rated for 10,000mAh, but what does it mean? You might also have come across laptop batteries rated for 50 watt-hours(Wh)... let's take a quick dive and have a better view of what these numbers mean!</p><p>🔋 Definitions:</p><p> mAh (milliampere-hour) = how much charge a battery can store.</p><p> Wh (watt-hour) = how much energy a battery can deliver.</p><p>Think of mAh like the size of your fuel tank, and Wh as the total energy in the tank.</p><p>⚡ The Difference:</p><p> mAh: Electric charge (milliamp-hours) > Capacity in terms of current over time</p><p> Wh: Electric energe (watt-hours) > Total energy the battery can deliver</p><p>Charge, energy? Huh?</p><p>Charge (Q) is how many electrons you have.</p><p>Energy (E) is what you can do with those electrons (like powering a device).</p><p>🔋 Analogy: Water Tank:</p><p>Charge is the amount of water.</p><p>Voltage is the pressure.</p><p>Energy is the work the water can do, like turning a water wheel.</p><p>🔁 Converting mAh ↔️ Wh:</p><p>To convert, you need the battery's voltage (V).</p><p>The formula:</p><p>Wh = (mAh × V) ÷ 1000</p><p>mAh = (Wh × 1000) ÷ V</p><p>🧠 Example:</p><p>A 5000 mAh phone battery at 3.7 V:</p><p>Wh = (5000 × 3.7) ÷ 1000 = 18.5 Wh</p><p>So that battery holds 18.5 watt-hours of energy.</p><p>The more you know!</p>
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