If your Apple Watch needs to be charged too often, or it is using more battery life than you think it should, there are a number of things that you can do
On average, the Apple Watch has a battery life of 18 hours after a full charge. But since you’ll need to use the watch for more than 20 hours on a daily
The Apple Watch should have enough charge to last you a full day with moderate-to-heavy use. If you don’t use it a ton, you might even get more than a day out of it!