Time for tank update. My battery backup failed after 1 yr operation due to my mistake. Was suppose connect all three, battery pwr supply, pump pwr supply and to wavemaker. Being the otaku i am, i skipped the instructions and went in with guns blazing haha, was thinking only battery charger is needed and connect to wavemaker, it makes sense to me, charge the battery and nero runs thru the battery. This meant the battery was charging and discharging unnecessarily and shorten the lifetime drastically. Rookie mistake. [emoji29] the correct operation should be battery charger connected, pump p