L322 Battery MF31-1000 in an L322

backinblack · Jun 26, 2020

Done a search but can't find anything conclusive, all the posts I see don't have a follow up.

Can someone please confirm if a Battery MF31-1000 fits in an L322. Looks to be 52mm taller than my Halfrauds one?

Many thanks.

Datatek · Jun 26, 2020

It must, several people have fitted one. The Halfrauds one is probably the torch battery they seem to like to recommend.

RangeRoller dt · Jun 26, 2020

Yes they do go in there. No idea if here are different size ones available. I can measure mine if you want? Make sure you get the terminals right way round as cables will be tight stretch, they are tight fit.

myfirstl322 · Jun 27, 2020

RangeRoller dt said:
Yes they do go in there. No idea if here are different size ones available. I can measure mine if you want? Make sure you get the terminals right way round as cables will be tight stretch, they are tight fit.

You measured it yet?

RangeRoller dt · Jun 27, 2020

No point he already put one in.

Is yours bigger than mine?

Doubt it

backinblack · Jun 28, 2020

Sorry don't seem to be getting the alerts for replies.

I saw a post from another member that had ordered one and he confirmed it fits. New one should be here Monday.
The Halfrauds one was ok when I was driving it every day but working from home means it's not getting it's daily charge.

Thanks for the replies though

Datatek · Jun 28, 2020

backinblack said:
Sorry don't seem to be getting the alerts for replies.

I saw a post from another member that had ordered one and he confirmed it fits. New one should be here Monday.
The Halfrauds one was ok when I was driving it every day but working from home means it's not getting it's daily charge.

Thanks for the replies though

Charge the battery before fitting and get a solar panel to maintain it.

backinblack · Jun 28, 2020

Datatek said:
Charge the battery before fitting and get a solar panel to maintain it.

@Datatek Will be charging it thanks.

I already have 3 25w solar panels, 2 in the wife Corsa (it's parked in the shade) and 1 in the L322

backinblack · Jul 1, 2020

I can confirm it does fit, I just need to make some brackets to secure it as it doesn't have the lip around the bottom.
Now will the old one fit somewhere as a dual battery setup since it's 900amp and only 18 months old?

Thanks for your help all.

RangeRoller dt · Jul 1, 2020

You get the battery megastore one?

Datatek · Jul 1, 2020

RangeRoller dt said:
You get the battery megastore one?

MF31-1000 is the Battery Megastore order code so it looks likely.

backinblack · Jul 1, 2020

Yep, Can't fault them. Ordered Friday, delivered Monday, Charged and fitted Tuesday. Cheaper than wrong Halfrauds one as well

kds · Jul 1, 2020

backinblack said:
I can confirm it does fit, I just need to make some brackets to secure it as it doesn't have the lip around the bottom.
Now will the old one fit somewhere as a dual battery setup since it's 900amp and only 18 months old?

Thanks for your help all.

In the boot right hand side, you will lose the detachable tow bar bin (mine now live`s with the spare wheel) wire it to the rear fuse board, few posts over on fullfat about it.

backinblack · Jul 1, 2020

kds said:
In the boot right hand side, you will lose the detachable tow bar bin (mine now live`s with the spare wheel) wire it to the rear fuse board, few posts over on fullfat about it.

I don't have the tow bar anyway so thats no problem, just need to see if the battery will fit in there I suppose.

EDIT: I did read about it on there a while back,worth another luck. Cheers for the reminder.

Russell 1 · Jul 2, 2020

Is the right side big enough for a battery to go below the floor? I need something to run my col box and have a couple spare batteries.

backinblack · Jul 2, 2020

Theres a post on fullfat where he shows a 920amp battery in there, mines only 900amp so should be plenty of room

As it's only a 40amp cable in the boot I was looking at a DC to DC charger but they are silly money so now thinking if a 20amp solar panel charge controller will work to limit the current?

Amazon product

Datatek · Jul 2, 2020

backinblack said:
Theres a post on fullfat where he shows a 920amp battery in there, mines only 900amp so should be plenty of room
As it's only a 40amp cable in the boot I was looking at a DC to DC charger but they are silly money so now thinking if a 20amp solar panel charge controller will work to limit the current?

Amazon product

Yep, a solar panel charge controller should do the job, stop you running the second battery flat too.

backinblack · Jul 2, 2020

Datatek said:
Yep, a solar panel charge controller should do the job, stop you running the second battery flat too.

That's my thinking. Need to check if the charge controller only kicks in over around 13v otherwise i'll need a delayed relay.

Datatek · Jul 2, 2020

backinblack said:
That's my thinking. Need to check if the charge controller only kicks in over around 13v otherwise i'll need a delayed relay.

If you apply the input from the car to the solar panel circuit, leak back to the panel is blocked when it's dark, however, if the auxiliary battery is low, it may continue to charge from the cars main battery so I would fit an isolating relay on the input to the controller for security powered off the switched caravan feed if there is one on the L322.
This is the controller I use.
https://www.ebay.co.uk/itm/20A-12V-...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

backinblack · Jul 2, 2020

@Datatek re the continued charging, that's why I'm thinking if the controller only charges over around 13v input it would isolate the 2 batteries and stop the second battery pulling power until the engine is running and the alternator is up to speed. Otherwise like you say an isolation relay.

Any particular reason for you recommending that controller only I have 2 of the ones I posted as I like the voltage display?

L322 Battery MF31-1000 in an L322

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