Battery life dilemma - HELP

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KV3NU21
KV3NU21 Member Posts: 1 New User
edited March 2023 in 2017 Archives
Acer aspire E 15 (E5 -575-33BM) i3 7100u model has a 2800mah battery and claims up to 12 hours battery life.

Acer aspire ES 15 (ES1-572-31KW) i3 6100u model has a 3220mah battery and claims up to 6.5 hours battery life?

How can this be?the i3 7100u model has keyboard backlight and a higher resolution screen,with a smaller battery and supposedly lasts longer???

If someone has an explination i'd like to hear it. proof or a comparison would also be great!