12v lighting for my house powered by my van

[12vshocker]

hello all is this possible????

I drive a van around all day, I want to use the van to charge up a 110ah Agm battery, I then want to use this battery to power up a 12v led lighting circuit in my house. I also want to use the 240v supply as a back up to the same lighting circuit, with some sort of switch over device for when the agm battery voltage gets low.

Essentially I will have 2 batteries in rotation, charging one all day why the other is being used

Any idea if this set up is used any where and how well it works, or where to find the calculation to see how long a fully charged 110ah battery would last

I don't want to use a inverter, just the transformers already build into the Selv lighting, and diodes to stop the 240v system back feeding into the 12v system.

Is this possible, (not too bothered about it being economical)

Let me know your thoughts and criticisms

 

[Deuce]

Each daily cycle saves him 80 x 11.5 x 0.14 = £ 1.29 in electricity but costs 175/400 = £0.43 in battery wear and tear. So the maximum possible saving on this scheme is around 86p per day. I would be surprised if, in real-world changing conditions, you would achieve half that.

It's even more pointless than that - as there is no way he's going to burn through £1.29 of power per day just running the 12v lights in anycase.

The average UK home uses about that much per day across all circuits so...

It would genuinely be more sensible (or less stupid??) to leave the van running, and fit a cheap inverter to provide a 230ac supply from the van to the house.. That's an equally silly but far more economic way of turning company fuel into home power than pushing it into batteries and swapping them each day.

EDIT: Since seen @Shoei 's post and the decimal point mistake. Whatever, it's still more economical to take the power direct from the van than to try and store it

 

[davesparks]

If the aim of the game here is indeed to use company diesel to provide electricity then it would be better to buy a diesel generator and syphon the fuel out of the van to fuel it.

 

[Deuce]

If the aim of the game here is indeed to use company diesel to provide electricity then it would be better to buy a diesel generator and syphon the fuel out of the van to fuel it.

Jeez, now the OP has to find a diesel generator to steal too!!