75A Leisure Battery and Solar Panel

[welshbaron]

All,

hoping someone can help as I know nothing about electrics! I currently have a 75A leisure battery it's fitted under my double seat as my single seat house a webasto heater and I was told they could not fit a bigger battery.

I am looking at having a rooftop solar panel installed which is rated for 335 watts.

Will the solar be enough to keep my leisure battery topped up whilst using my webasto and running a 12v fridge (Aldi), include the LED internal lights on during the evening. Or will the 75A battery not be up to the job holding the charge?

TIA

 

[Dellmassive]

I'd say not.

Depending on the fridge.... thermoelectric?

Is the 75ah an AGM BATTERY?

Possibly get a second one and double up.?

Have you got a dc-dc charger?

What solar controller will you use?

 

[Dellmassive]

More info...

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[welshbaron]

I'd say not.

Depending on the fridge.... thermoelectric?

Is the 75ah an AGM BATTERY?

Possibly get s send one and double up.

Have you got a dc-dc charger?

What solar controller will you use?

Cheers for the quick reply - the battery is made by Platinum (class C?) and not got a DC-DC charger and the controller would be a Bluetooth 100/30 MPPT (which means nothing to me)

the fridge is from Aldi and runs on 12v or 240 so suspect nothing special

 

[Dellmassive]

Thats a very good solar controller.

Any pics of the battery?

Pics or spec of the fridge and night heater....?

Thing is...... you have solar...

Which is great, for summer months.... when you dint need a heater.


You need a heater when its cold and not sunny....


So you might be looking at fitting dc-dc charger in future.... that way running the engine will charge the battery too...

 

[welshbaron]

This is my battery and the heater is a wasbasto. My battery charges when I drive the car I have no idea what a dc-dc charger is pal lol

The fridge is just a basic 12v one does not say the amp etc

 

[Dellmassive]

The Stirling is a dc-dc charger.....

Once the solar is fitted is will have a nice setup...

Just not sure if you have enough battery capacity.

How long you looking to run for?

4day weekend?

7night week?

 

[welshbaron]

Done some checking and heater uses the following power :

Question 14 – How much power does the heater consume? The AT 2000 STC uses as little as 14 watts during normal operation (6-7 Amps at initial start phase, then 1-2 Amps during continuous running)

The lights are LED so should not consume much as for the fridge I have no idea what kind of amps it uses.

Most properly looking at 4 days weekend at tops without electric, I have an electric hook up as well but it does not charge the battery etc so when on electric the fridge would running of that but the heater and lights would run off a battery.

What I want to know if it was a waste of time installing solar because of my battery only being 75amp was kind of hoping the battery would be getting more of a charge from a 320W system rather than more drain so in effect keeping it charged - but it does not work that way. Show's how little I know!

 

[Dellmassive]

Looks like your big power drain is possibly your cooler box.... maybe 6amp draw?

Decent solar will give you 6A per 100w.... so 18A possible from 300w. (Isc).

Have a look at cooler box etc here.....

Fridges & Cold Beer -- How I Done It --

Fridges & Cold Beer -- How I Done It -- For Most Beer Lovers, Cold Beer is a Must. (especially Larger) and for Her-Indoors a cold wine or G&T will always help smooth the situation . . . . maybe even Cold POP for the kids (My nanas term) Then there is the necessities of camping and Fridges...

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