What does 48whr mean?

"48whr" refers to a battery's capacity, specifically indicating that it has a rating of 48 watt-hours. This measurement represents the amount of energy the battery can store and deliver over time. A higher watt-hour rating generally means the battery can power a device for a longer period before needing a recharge. It's commonly used to specify the capacity of batteries in laptops, electric vehicles, and other electronic devices.