{"id":41135,"date":"2023-04-21T15:48:28","date_gmt":"2023-04-21T05:48:28","guid":{"rendered":"https:\/\/batterytools.net\/?p=41135"},"modified":"2023-04-21T15:52:17","modified_gmt":"2023-04-21T05:52:17","slug":"understanding-what-wh-means-on-a-battery","status":"publish","type":"post","link":"https:\/\/batterytools.net\/understanding-what-wh-means-on-a-battery\/","title":{"rendered":"Understanding What “Wh” Means on a Battery"},"content":{"rendered":"
Have you ever looked at the label on your battery pack and noticed the letters “Wh” printed near the voltage rating? If you’re wondering what this abbreviation means and how it affects your device, this article will give you all the answers.<\/p>\n
Wh stands for watt-hour, which is an energy measurement unit used to describe the amount of energy a battery can store or provide over time. It’s calculated by multiplying the battery’s voltage (V) by its capacity (Ah). For example, a 10 V battery with a capacity of 5 Ah has a watt-hour rating of 50 Wh.<\/p>\n
A battery with a watt-hour rating of 7.4 Wh means it can deliver a constant power output of 7.4 watts for one hour before it’s fully drained. However, the actual runtime may vary depending on the device’s power consumption and efficiency.<\/p>\n
The physical size of a battery with a watt-hour rating of 100 Wh can vary greatly depending on its chemistry and design. For example, a 100 Wh lithium<\/a>-ion battery used in laptops and drones can be as small as a deck of cards, while a lead-acid battery with the same rating used in electric vehicles can be as large as a microwave oven.<\/p>\nHow Long Will a 500 Wh Battery Last?<\/h2>\n