M1 vs M2 MacBook Battery Life: Which lasts longer?

The M2 chip has a longer battery life than the M1 chip, but the difference is not that big.
The M1 MacBook can last up to 18 hours on a single charge, while the M2 MacBook can last up to 20 hours on a single charge. However, your actual battery life will vary depending on how you use your MacBook.
For example, if you're using your MacBook for demanding tasks such as video editing or gaming, then your battery life will be shorter. If you're using your MacBook for less demanding tasks such as browsing the web or checking email, then your battery life will be longer.
Overall, both the M1 and M2 MacBook have excellent battery life. However, if you need the absolute best battery life, then the M2 MacBook is the better choice.