In Lords Mobile Energy Saver I research reduces the energy needed to attack a monster on the map. It is found in the monster tree.
There are 10 levels and once maxed you will have reduced the energy needed to attack a monster by 16%. You need to have unlocked monster hunt I in order to research this ability.
The table below has the resource cost and time to upgrade each level. It also shows the might and rewards granted. You can find out your own research time by using our research calculator.
Energy Saver I Research Requirements
Please feel free to leave any details you have from Lords Mobile by commenting below and we will update the data accordingly.