Can I use 3.7V 400 mAH battery instead of 3.7 V, 520 mAH, 2.00 W ?
How much difference it can make ?
Sorry not more techical sound here...
Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. It only takes a minute to sign up.Sign up to join this community
Basic math. Find the percentage. 520/100 * 400/? = (400 * 100) / 520 = 76.4.
A 400 mAh battery is 76.4% of the 520 mAh one. You will get 76% the run time. Less in practice due to non-linear changes.