With a box of 32 AAA alkaline batteries LR 6, jen have for a while and i what to do to power all the devices often jOperation. As in terms of energy, reliability, durability, Duracell brand na no competition, this is my supplier long time. Moreover, with the Powercheck control method, it is possible to monitor the level of energy of the battery. This is a plus but not a must. Guaranteed results.