[Sir Squeaky]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

[Smudger]

will depend on your alternator - I have a doblo - not start/stop but has a "smart" alternator - have to shell out for  suitable b2b charger at £200 - standard split charge relay was no good


Darran

[AuRavelling79]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

Hello Squeaks, how are things with you Chepstow way?

[Sir Squeaky]

will depend on your alternator - I have a doblo - not start/stop but has a "smart" alternator - have to shell out for  suitable b2b charger at £200 - standard split charge relay was no good


Darran

Not taking about split charging mind. Just running the pump direct from the battery. That’s how I’ve always done it

[Sir Squeaky]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

Hello Squeaks, how are things with you Chepstow way?

Hi mate. Yeah not too bad. Got out of Chepstow though and moved to Lydney.
Just too busy around chepstow. Sadly I still mostly work there!

[AuRavelling79]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

Hello Squeaks, how are things with you Chepstow way?

Hi mate. Yeah not too bad. Got out of Chepstow though and moved to Lydney.
Just too busy around chepstow. Sadly I still mostly work there!

At least you are away from Tosh!

I was up at Lydney harbour last weekend. Nice little walk.

[Spruce]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

This is the old "how long is a piece of string" question.
The only way you will know is if you try it. It will either work for you or it won't.

What would concern me is the start-stop battery technology is total different to standard lead acid battery technology. And, as Darren says, it will also depend on how smart the alternator is. Will the alternator dump a high voltage into the battery on deceleration, for example.  I don't know anything about VW's start-stop technology. I don't think they employ regenerative braking, but an alternator can be programmed to react the same way on deceleration.

If your alternator does increase voltage charge output for faster battery charge and you are a cleaner who leaves his controller on during the day even when moving jobs, will the controller stand a higher voltage input? So your experiment could end up costing you money.

[Sir Squeaky]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

This is the old "how long is a piece of string" question.
The only way you will know is if you try it. It will either work for you or it won't.

What would concern me is the start-stop battery technology is total different to standard lead acid battery technology. And, as Darren says, it will also depend on how smart the alternator is. Will the alternator dump a high voltage into the battery on deceleration, for example.  I don't know anything about VW's start-stop technology. I don't think they employ regenerative braking, but an alternator can be programmed to react the same way on deceleration.

If your alternator does increase voltage charge output for faster battery charge and you are a cleaner who leaves his controller on during the day even when moving jobs, will the controller stand a higher voltage input? So your experiment could end up costing you money.

No of course I turn the controller off. I’d flood the van otherwise 
I simply want to know whether I can run a  fused wire from the battery to the pump like a regular battery.
If not, then I won’t buy the van. But most have it now, so people must be able to do it somehow.
Guess I need to speak to an actual auto electrician

[Smudger]

that would be best...

Darran

[Spruce]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?
Thanks.

This is the old "how long is a piece of string" question.
The only way you will know is if you try it. It will either work for you or it won't.

What would concern me is the start-stop battery technology is total different to standard lead acid battery technology. And, as Darren says, it will also depend on how smart the alternator is. Will the alternator dump a high voltage into the battery on deceleration, for example.  I don't know anything about VW's start-stop technology. I don't think they employ regenerative braking, but an alternator can be programmed to react the same way on deceleration.

If your alternator does increase voltage charge output for faster battery charge and you are a cleaner who leaves his controller on during the day even when moving jobs, will the controller stand a higher voltage input? So your experiment could end up costing you money.

No of course I turn the controller off. I’d flood the van otherwise 
I simply want to know whether I can run a  fused wire from the battery to the pump like a regular battery.
If not, then I won’t buy the van. But most have it now, so people must be able to do it somehow.
Guess I need to speak to an actual auto electrician

Some cleaners leave their controllers on all day and only switch them off at night. A stop/start battery is designed to continue to feed the accessories while the engine is switched off, so yes, you can just connect the pump to the battery in the same way as you do now.

[dazmond]

Why would you buy a 12 year old van anyway?sounds like your going backwards squeaky.it might be OK for a few years if you were trad but your asking for trouble wfp with all the water we carry.

[Smudger]

Same reason you would go work on a bank Holiday

Darran

[Ian Sheppard]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?http://springltd.co/link2
Thanks.

Morning a 2011 registered vehicle would have the older Euro5 emissions standard.  So while it will have an alternator management  system it would not dramatically change what your currently doing. From memory the VW Caddy battery is under one of the seats and difficult to get to.

The other downside of running a pump straight from the vehicle battery is that the battery life will be shortened. A vehicle battery is not designed for continuous output. There are there to start the engine and give a high current output for a few seconds then be recharged by the alternator. Using the Vehicle battery to run a pump will damage the cells and the ability of the battery to hold a charge. The risk is the battery gets drained and does not have sufficient power to start the engine.

Using a separate leisure battery to run your pump would be better,  then a split relay could  be used to put some charge back into the leisure battery while the engine is running.

This link covers the bases https://www.progressivedyn.com/battery-basics/

 

[NWH]

I know people that have done it for years you just need to make sure you’ve got a spare vehicle battery in the back,they couldn’t be bothered to wire up a controller etc or spend the money lol.

[Spruce]

Any electricians?
I use a VW Transporter and run the pump from the van battery.
Never been any issues.
I’m looking at a 2011 Caddy now, but it has start/stop battery.
Will that make any difference? Can you still run things normally from it?http://springltd.co/link2
Thanks.

Morning a 2011 registered vehicle would have the older Euro5 emissions standard.  So while it will have an alternator management  system it would not dramatically change what your currently doing. From memory the VW Caddy battery is under one of the seats and difficult to get to.

The other downside of running a pump straight from the vehicle battery is that the battery life will be shortened. A vehicle battery is not designed for continuous output. There are there to start the engine and give a high current output for a few seconds then be recharged by the alternator. Using the Vehicle battery to run a pump will damage the cells and the ability of the battery to hold a charge. The risk is the battery gets drained and does not have sufficient power to start the engine.

Using a separate leisure battery to run your pump would be better,  then a split relay could  be used to put some charge back into the leisure battery while the engine is running.

This link covers the bases https://www.progressivedyn.com/battery-basics/

Hi Ian,

Just a question while you are around.

There have been some cleaners who leave their controllers switched on all day and only switch then off after the working day. If you have a van with regenerative braking that can dump 17v of charge into their van's battery, (Sterling's comments) would the V16 cope with that higher voltage if left switched on?
Thanks