DIY 12v battery backup for powerhead?

[Pete Hammersley]

Hi, I’ve done a lot of reading and research, but I’m struggling to find a good example of a DIY car battery power supply for a powerhead pump, that stays permanently charged and automatically switches on when the power goes off.
I would imagine it operates exactly the same as emergency hallway lighting. Has anybody done this successfully, and better still has anybody got a thread / video to show how it’s done?
Thanks.

 

[Seadoc]

It is going to depend on which powerhead you have. Vortech and Vectras have an input for battery power and will switch to it when power goes off. Other pumps will require a different approach. Here is a link to a youtube video that may be useful:

 

[Pete Hammersley]

It is going to depend on which powerhead you have. Vortech and Vectras have an input for battery power and will switch to it when power goes off. Other pumps will require a different approach. Here is a link to a youtube video that may be useful:

Thank you, that’s the perfect video for what I wanted.