Around 4days on airplane mode is also what i had last time i forgot to switch it off. 6 hours normal usage also fits. Jolla Tablet boots up very fast so i do switch it off after recharge to min 80%. Somehow we need to find the max runtime by turning everything off, right? Then calculate an optimum drain/hour and can then compare to states with single running services and apps drain/hour. What i am going to try first is if i can beat the 4-5 days with Dalvik disabled. Was it running during your airplane runtime @mscion? What else to disable. Is it worth to try not using airplane but switching the services off manually to rule out airplane does not actually switch "everything off"? Would'nt it be cool if we could hint jolla where to optimize and make the existing and hopefully coming tablets last longer?