The guys over at FoneArena have put the Tizen based Samsung Z1 SM-Z130H/DS through its paces to check out the battery life, with the results posted below. The Z1 packs a 1,500mAh Lithium ion battery, which is the standard size for a Smartphone with a 4-inch WVGA display. The Tizen Z1 also has an ultra power saving mode that allows you to extend the battery life, but this obviously wasn't used in these tests.
Lasted 9 hours and 5 minutes for the which i'm happy to see is better than the Android One smartphones.
Lasted for 5 hours and 15 minutes in 3G browsing test, which is on-pair with other mid-range smartphones, but we hope the browsing experience was hopefully better due to the browser adhering to W3C Standards.
Lasted for 7 hours and 8 minutes in WiFi browsing test, which earned it second spot.
FoneArena rate this as a One Charge Rating of 6 hours and 55 minutes and conclude that the Z1 has a decent battery life for a smartphone with a 1500mAh battery that is in this price range. As a fairly new Operating System, Tizen has the potential to improve on these figures.