installing inverter to run security cameras

6-amps @ 12 volts = dinosaur technology. Buy a modern system and halve the wattage.

Sealed batteries that are not AGM or Lithium are HORRIBLE for continuous use. They are meant to power emergency signage for a few minutes then go back to floating. In continuous use, they may last a month, before they croak.

Hi,

6 amps @ 120 volts = 60 amps @ 12 volts by the time inverter overhead is dealt with. A huge battery bank would be needed--and a way to recharge it.

dalefuji wrote:
I have DVR and security cameras that draw about 6 amps and I was considering an inverter installation.
Options:
1. Get additional sealed battery and isolator to hook up inverter to run equipment.

Question: Which would be better.
a. Hook up to two batteries that supply 12 volt lights etc.
b. Hook up to front battery and when parked for long period just plug into ac outlet in RV

If you have better suggestion, please advise me.

6 amps at 120 volts, or at 12 volts?

I'm using a CCTV DVR intended for residential installation. Fact is, it was used in my home for a few years, before I upgraded to a better setup. It's now several revisions old.

My DVR actually has a computer type of power supply, converting the 120VAC to 19VDC. So rather than install an inverter to take the existing 12VDC, to convert to 120VAC, then the power supply back down to 19VDC, I bought a 12VDC to 19VDC DC-DC converter.

There's a video of it being tested here: https://www.youtube.com/watch?v=l0hqnXgl6cw

Along with this addition, I was able to tie into the 3 existing cameras on our RV (left turn signal, right turn signal, backup). I've added a 4th camera for a forward view.

We leave our rig plugged in since it lives next to our house. Could just as easily run it from batteries, but as you've noted, the system does use a fair amount of power.

With our setup, nothing needs to be done when we disconnect from shore power, drive, or park for extended periods. The CCTV system never sleeps!

Here's the DC-DC converter I'm using: https://amzn.to/2ycZAOj



Don't know if your DVR is like mine, but the few I own, all use a power supply.

I think a better solution is to just forgo the camera system when you must "dry camp" and run only on batteries.
That is a substantial draw and likely will cause you a problem no matter what you do......unless maybe you spend a few thousand dollars on a top of the line power system.