Backup power for pi 2 model b

Question

I'm developing a CCTV system out of a pi 2 modal b and everything is on track using noIR camera and stuff. Since a CCTV should work for few hours without power, I'm in need of a backup power source when the mains are off.

Is there any circuit where I could plugin my regular power source an if that is out, a backup battery would get activated. I've seen USB batteries which is usable in this scenario but, that would need manually to switch the power source.

There's no getting around buying additional hardware here, since you need 1) An alternative power source, 2) An intermediate circuit for "uninterruptedly" switching the supply when mains fail. — goldilocks, Nov 13 '15 at 11:54

score 3 · Accepted Answer · edited Apr 13 '17 at 12:56

3

Uninterruptible Power Supply UPS

(Just as joan suggested in the comments). There are numerous solutions available - ranging from simple to expensive.

See:

How do I build a UPS-like - battery backup - system?
ModMyPi's UPS PICO

edited Apr 13 '17 at 12:56

Community

1

answered Nov 13 '15 at 10:08

Ghanima

15,855
15
61
119

score 1 · Answer 2 · edited Nov 18 '15 at 18:29

1

I bought it directly from manufacturer www.pimodules.com

Works very good, supply up to 2A + many extras.

edited Nov 18 '15 at 18:29

Ghanima

15,855
15
61
119

answered Nov 18 '15 at 18:23

Jarek

11
1

Backup power for pi 2 model b

2 Answers2