Using EV Charging Points?

[John H..]

Is it possible to use an Electric Vehicle Charging point to charge the leisure bateries on my motorhome?

 

[Cheshirecat57]

don't think so, ev charging point interfaces with an ev onboard charge and a huge bank of high voltage ev batteries…….different to a motorhome leisure charging system with 12v batteries

 

[brynric]

My Moho leisure battery is 12v. My Kia battery deals with
something like 300+ volts. Very different beasts.
Mind you, with the correct connectors it could charge really fast. It could go like a bomb!!!

 

[cmcardle75]

Whilst technically feasible with the correct charger, I've not heard of the correct charger actually existing. This is especially the case for the DC rapid charging. It would be relatively simple to design a single phase CCS AC "slow" charger, but I've not heard of one. In reality, all car chargers are designed to supply far more current than even the fastest leisure battery bulk charge requires.

 

[deleted79651]

Whilst technically feasible with the correct charger, I've not heard of the correct charger actually existing. This is especially the case for the DC rapid charging. It would be relatively simple to design a single phase CCS AC "slow" charger, but I've not heard of one. In reality, all car chargers are designed to supply far more current than even the fastest leisure battery bulk charge requires.

CAMH Magazine had an article abut towing with an EV [Tesla + Bailey2 berth]. Only scan read the article, but seemed to say that 'after consulting CAMH Tech Dept', the Tesla could be charged from the caravan battery control panel, and this will be the requirement in the future. Oh, and an £8 extra fee for the EV Charge [but only £2 for a hybrid recharge ...].

Steve

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[autorouter]

EV charging points supply standard mains voltage electrical power - 240V single phase or 400V three phase. The charger for the DC battery is in the vehicle. It's possible for example to charge a Type 1 or Type 2 electric vehicle from a standard 13A mains plug - many cars have an adapter that can be used for this purpose. OK, it takes a long time. 42kWh at 3kW is 14 hours, or longer. But the point is, it's possible.

EV charging points and vehicles have extra wires for safety interlock and to allow 2-way communication between post and vehicle. For example, if you pull out the charging cable from the vehicle and drop it in a puddle, it's perfectly safe - unlike a motorhome hookup wire, which is still live.

There's no reason in principle why a MH battery bank can't be charged by an EV point. It's just a matter of building a charger with the required communcation protocol. On the EV post side, there's a chip available that does all the communication and interlock bits. I've not found one for the charger side, but I'm sure there must be one available. It's supposed to tell the EV post how much power it can handle. In a few years I'm sure many MHs will be able to charge leisure batteries from an EV point, but at the moment, for some reason, no-one is even talking about it.

 

[deleted79651]

EV charging points supply standard mains voltage electrical power - 240V single phase or 400V three phase. The charger for the DC battery is in the vehicle. It's possible for example to charge a Type 1 or Type 2 electric vehicle from a standard 13A mains plug - many cars have an adapter that can be used for this purpose. OK, it takes a long time. 42kWh at 3kW is 14 hours, or longer. But the point is, it's possible.

EV charging points and vehicles have extra wires for safety interlock and to allow 2-way communication between post and vehicle. For example, if you pull out the charging cable from the vehicle and drop it in a puddle, it's perfectly safe - unlike a motorhome hookup wire, which is still live.

There's no reason in principle why a MH battery bank can't be charged by an EV point. It's just a matter of building a charger with the required communcation protocol. On the EV post side, there's a chip available that does all the communication and interlock bits. I've not found one for the charger side, but I'm sure there must be one available. It's supposed to tell the EV post how much power it can handle. In a few years I'm sure many MHs will be able to charge leisure batteries from an EV point, but at the moment, for some reason, no-one is even talking about it.

Business opportunity? Bearing in mind your need to advise me to 'connect the red wire to the positive ...' when I asked about making a water transfer pump [which worked!], perhaps any involvement on my part should be limited to the financial side?

Steve

 

[Robert Clark]

Is it possible to use an Electric Vehicle Charging point to charge the leisure bateries on my motorhome?

No

 

[autorouter]

EV charging points supply standard mains voltage electrical power - 240V single phase or 400V three phase.

EV charging points supply AC or DC. If you ask your app to show AC chargers, then don't be surprised if it only shows AC charge points, not DC ones. Sorry about that. But there's still a lot of AC charge points around.

While anything is possible in electronics given enough effort, it's probably too much to convert the high voltage DC to something the leisure batteries can use.

 

[dunnah01]

Just put a regular external socket on the mains feed cable before it enters the EV charger?

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[acropolis22]

Just put a regular external socket on the mains feed cable before it enters the EV charger?

 

[tonyidle]

Why would anyone want to? Having charge points blocked by a slow-charging MH (that has plenty more sensible options) is probably not to be encouraged.