Without ab battery?

[dickydo]

Will interior lights work in the van when connected to hook up, but without a hab battery?

 

[cmcardle75]

Will interior lights work in the van when connected to hook up, but without a hab battery?

Normally, but it requires a battery charger that has a PSU only mode. Most do, but not all.

 

[dickydo]

It is a Peugeot 105 2015

 

[Riverbankannie]

Would the battery charger be connected to the 12v circuit though bypassing the hab battery. ? Wouldn’t the 12 hab system be “broken” if battery removed?
I know little about electrics just curious as to how it could work.
dickydo , I think cmcardle75 wanted to know about your battery charger.

 

[Beryl]

We've got a Peugeot-based Elddis 115, and it's pretty clear in the manual that you should always have a hab battery connected - I guess because the 12v is connected to the battery and the charger charges the battery, it's not connected directly to the 12v system. This seems to be born out of an evening, you can hear the fan on the charger kicking in every now and then as the battery is drawn down by the lights etc.

Cheers,

Rob

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[dickydo]

Hi Riverbank annie, I know less than you! The reason for my post is because I recently bought a new hab battery that i had to return for a replacement due to a fault with it, then have now seen weather forecast for next week, ie 26 degrees The replacement battery will not be delivered until Mon/Tues next week hence my query I am just hoping for a definitive answer today but thanks for your reply

 

[WynandJean]

I suppose you could disconnect the battery and try it.

Wyn

 

[Spriddler]

I suppose you could disconnect the battery and try it.

Wyn

I don't think he has one at all...........

I recently bought a new hab battery that i had to return for a replacement due to a fault with it,......The replacement battery will not be delivered until Mon/Tues next week

 

[Lenny HB]

It would help if you said what distribution unit & charger you have. Some require the battery to act as a smoother to give a pure dc output.

 

[WynandJean]

In that case....just try it?

Wyn

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[Riverbankannie]

Hi Riverbank annie, I know less than you! The reason for my post is because I recently bought a new hab battery that i had to return for a replacement due to a fault with it, then have now seen weather forecast for next week, ie 26 degrees The replacement battery will not be delivered until Mon/Tues next week hence my query I am just hoping for a definitive answer today but thanks for your reply

If you just need the hab battery for lights but will have EHU then just take as small lamp from home.
You might need to take matches to light the hob (Sparker is from 12v system) and I presume fridge will work off EHU.
Water pump 12v too though

 

[pagey]

i think you would need some sort of battery even if it is not a leisure battery

 

[cmcardle75]

We've got a Peugeot-based Elddis 115, and it's pretty clear in the manual that you should always have a hab battery connected - I guess because the 12v is connected to the battery and the charger charges the battery, it's not connected directly to the 12v system. This seems to be born out of an evening, you can hear the fan on the charger kicking in every now and then as the battery is drawn down by the lights etc.

It seems likely that Elddis would have similar systems across the range, so it is not looking good.

Can you borrow a battery from somewhere? I'm the sort of weird person who has lead acid batteries lying around. But if you're more normal, you could borrow one from a car for the weekend.

 

[cmcardle75]

Can you borrow a battery from somewhere? I'm the sort of weird person who has lead acid batteries lying around. But if you're more normal, you could borrow one from a car for the weekend.

BTW, if you don't, you should turn off the charger before you connect the EHU. It might be unstable if it is a type that requires a battery to be installed and could even damage your hab electrics through overvoltage if it is using the battery as a regulator.

 

[two]

Best to have a battery in place.

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[dickydo]

Thanks for all the replies and no, I do not have a battery at present

 

[cmcardle75]

Thanks for all the replies and no, I do not have a battery at present

Personally, given what was said about the 115 above, I wouldn't even plug in an EHU until you've either disconnected the charger/12V power unit from the mains, or have found a battery to use. Almost any 12V lead acid will do (well maybe not tiny 2Ah alarm batteries!) It doesn't have to be a big or "leisure" type. A 40Ah from a Ford Fiesta would be fine.

 

[TheBig1]

even a spare car battery would be ok. Most modern chargers need the battery there to feedback the state of charge to the electronics to determine the output required. It may work for a while but you run the risk of expensive damage to your van's electrical system

 

[Spriddler]

Thanks for all the replies and no, I do not have a battery at present

Where are you? Like cmcardle75 I have 'spare' serviceable batteries lurking in my shed which you're more than welcome to borrow.

 

[dickydo]

Spriddler, if you would not mind just popping up to Herefordshire????? A very kind offer anyhow, Thanks

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[PaddyM]

Our battery died whilst on holiday once , had to physically disconnect it , lights worked fine .

 

[cmcardle75]

Our battery died whilst on holiday once , had to physically disconnect it , lights worked fine .

Most systems would allow this. But there is speculation that the Elddis system does not have this facility and might cause damage if run without a battery.

 

[TheBig1]

with multistage chargers, they see a dead battery and try and pump in as much juice as possible at near 14 volts, till it senses the battery is near full, then drops the voltage. Without a battery, it will not get that feedback

 

[dickydo]

Most systems would allow this. But there is speculation that the Elddis system does not have this facility and might cause damage if run without a battery.

I think this sounds sensible info for me to follow in my circumstances so thanks for your reply Mrcmcardle 75

 

[Langtoftlad]

Why not drive by Halfords and pick up the cheapest battery they have... purely as a short term temporary solution?

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[cmcardle75]

with multistage chargers, they see a dead battery and try and pump in as much juice as possible at near 14 volts, till it senses the battery is near full, then drops the voltage. Without a battery, it will not get that feedback

That depends on the charger. Ones mainly designed to charge batteries will sense no battery and shut down. Those intended for leisure use (i.e. caravan/motorhome) will automatically switch to PSU mode and put out constant voltage (probably around the 13.5V ish float it would normally use on a fully charged battery). The Victron BlueSmart will definitely do this and is not particularly unique in this regard.

Older or less sophisticated designs might rely on the battery for voltage regulation and anything could happen, but would typically will involve higher voltages than normally encountered when a battery is connected.