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Discuss Power in the van in the Plumbing Tools area at PlumbersForums.net

Riley

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Hi guys looking at upgrading the van and am looking at putting some sort of inverter set up in place. Now I know nothing about these other than I know pure sine is less likely to damage whatever is plugged in. Does anyone have experience of these at all?? Literally JUST looking at it recharging 18v/12v batteries whilst I’m on the move not while parked up. Any recommendations or thoughts or things to be aware of. Cheers
 

ShaunCorbs

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Need to find your load on the bottom of your chargers there’s the spec / loadings for 240v

are you planning on running multiple chargers or just one ?
 

Riley

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2 chargers one for 18v Dewalt and one for 12v Milwaukee. So probably c.500watt. I was always told rule of thumb is to double up wattage wise so go for 1000w but still not very up to speed with this
 
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Going via 240V ac is probably going to be more expensive and less efficient than buying a purpose-made charger with 12V DC input. Add 'car charger' or '12V DC input' to your web searches. There's a 12VDC->18V/12V Milwaukee charger available. Not sure about Dewalt but I'd be surprised if they don't do something similar.

 
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Riley

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It was really wanting to put an actual plug socket in the back and hide the wiring
 

Aquarius

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1,147
We have to them in our vans, think they have a permanent live, but only turn on with a on/off switch.
 

Ric2013

Plumber
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2,757
Pure sine would set you back well over a hundred. Some pure sine wave inverters are indistinguishable from the mains, but I would imagine you'd get what you paid for and to have as clean a supply as the mains may cost several hundred.

For a charger, I would imagine a modified sine wave inverter would be sufficient and cost would be in the £25 region. You may find transformers (e.g. that in your charger) will give off a humming noise in use, and not great for running, say, a radio as that will hum through the speakers too.

I think I once owned a 300W version of this and that is what my experience is based on. The most actual use I got from it was a camping trip in Europe during which I used it to run a compact fluorescent bulb to save faffing about with a paraffin lamp. I don't have it any more as I gave it away as I'd bought it on a whim in the first place. May be worth having a chat with the Rapid Electronics technical department as they do seem to know their stuff.

 

gmartine

Gas Engineer
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1,535
I've been running this Streetwize 800W inverter from the back of mine for a nearly a couple of years that although not pure sine seems good enough as nothing has gone pop yet. I mainly use it for charging occasionally running the odd tool and has a built in 3 pin and USB. It's certainly not the highest quality kit but for £60 I cant complain. I think they do 1500w inverter which would be handier even if you could plug something serious in it for ten minutes, next van perhaps.


Have a look on Amazon for some pure sine inverters, cannot vouch for the Chinese made stuff being truly pure sine but heyho you pays your money.
 
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Riley

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Sounds good mate. I’m just sick of always having flat batteries. Just thought I’d make use of the time on the road
 

gmartine

Gas Engineer
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1,535
I forgot to say I run two millcackee fast chargers M12/M18 so don't know about Dewalt, I think generally speaking modern Li-ion chargers tend to be ok with a modified supply.
 

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