Solar panel regulator

 Hey all

Just wondering if you can use a house solar panel to put on roof of car to keep batteries topped up when camping.  If so can someone tell me what regulator i should get for this panel cheers.




"If we all fish for the future now there will be fish in the future"

Image Upload: 

timboon's picture

Posts: 2335

Date Joined: 14/11/10

 Yep not a problem, get

Sun, 2019-02-03 20:16

 Yep not a problem, get yourself some 4mm dual core and a male n female MC4 connection to plug into the MC4 connection that are already on the panel and a regulator and your away.

When you find a good cheap reg, let me know what brand you bought as I'm chasing one myself

Feral's picture

Posts: 1490

Date Joined: 01/11/06

 Ummm that's a 44v solar

Sun, 2019-02-03 20:38

 Ummm that's a 44v solar panel... He needs a 17v or there abouts and the regulator will drop it to 13.8v... Ive no idea what that unit will do to a 12v regulator but I don't think it would be good

Dale's picture

Posts: 7888

Date Joined: 13/09/05

Sun, 2019-02-03 21:57

Yep, your right there Clint. 


"Just because you are a Character, Doesn't mean you have Character."

Mr Wolf



roddo's picture

Posts: 457

Date Joined: 16/10/09

 Just make sure you get the

Sun, 2019-02-03 21:30

 Just make sure you get the appropriate regulator I'm pretty sure it's an mppt you need be wary of really cheap Ebay ones.

Posts: 88

Date Joined: 27/01/10


Sun, 2019-02-03 22:49

Most of the better controller companies will have something that will accept 44v solar for a 12v system.

Get in touch will a victron agent and give them the panel specs, not cheap but very good:

Posts: 563

Date Joined: 27/08/09

Thumbs up!!!!  I use one of

Mon, 2019-02-04 09:35

Thumbs up!!!!  I use one of the victron regulators... 75/15 I think.


Posts: 701

Date Joined: 22/07/10

Aldi are advertising a 170w

Mon, 2019-02-04 07:23

Aldi are advertising a 170w solar complete with reg for $169 next week with 1 yr warranty.

Dale's picture

Posts: 7888

Date Joined: 13/09/05

Mon, 2019-02-04 08:23

Solar panels generally have a 25 year warranty, for one year from a panel from Aldi, well that’s just scary.


"Just because you are a Character, Doesn't mean you have Character."

Mr Wolf



Swompa's picture

Posts: 2788

Date Joined: 14/10/12

They're cheap regulators on

Mon, 2019-02-04 12:14

They're cheap regulators on that panel so that will shit itself first. You can get them for $11 from Ebay

Feral's picture

Posts: 1490

Date Joined: 01/11/06

 Have a look on sunyee. Com.

Mon, 2019-02-04 11:23

 Have a look on sunyee. Com. Au 

I got both my 110w panels and all the bits at a great price 5 years ago and they seem to be getting cheaper . Mine feed into a ctek dual so it charges both battery banks under the bonnet and in the tray

dakka's picture

Posts: 263

Date Joined: 05/03/06

 Ok guys i have spoken to a

Wed, 2019-02-06 10:27

 Ok guys i have spoken to a couple of solar companies and they have recommended one of these 2 controllers any thoughts from the gurus on about these would be most welcome the 2 links are on my original post cheers



"If we all fish for the future now there will be fish in the future"

Posts: 6265

Date Joined: 26/04/14

 victron are quality and most

Wed, 2019-02-06 11:52

 victron are quality and most of their products come with 5 year warranties i think

Posts: 563

Date Joined: 27/08/09

Victron. I run a 75/15 on a

Wed, 2019-02-06 13:31

Victron. I run a 75/15 on a 160w 24v panel to charge my camping system.


Posts: 46

Date Joined: 19/02/09

 Hi Guys,the house panels are

Wed, 2019-02-06 21:41

 Hi Guys,

the house panels are putting out much higher Voltages than the standard camping panels you can buy that can push out 18 or so volts into a PWM regulator. You can put an MPPT regulator on a house panel as long as you check that the VOC is inside the controllers specs. The blue controller will handle Panels that kick out up to 60V and the black one would handleabout 40 to 45v happily. Being made overseas they will quote the top end of the scale of what the controllers can handle so I always down rate them a bit to ensure we arent pushing the envelope.

The volts coming out of the house panels will be changed into the volts of the battery the system is connected to. The Batteries must be connected first as this is what tells the controller how to operate. ie 12 or 24. Once the controller knows what to do you can connect the house panel and all is good. You can actually have longer cable runs and can afford the voltage drop that occurs with 18v panels. Not really an issue in a car.  The panel above should push out about 8amps at 13v with the MPPT and do it longer as it has a higher feed voltage. As the sun dips the input voltage decreases but the output voltage remains high so we get more juice in the batteries connected. a much better system than the Aldi specials for not much more. 

I use this 30amp ($154) unit below with a 60v 175w house panel ($40)  on my boat feeding 2 x 120 amp hour batteries and it runs an engel forever and handles a Travel buddy oven running for a couple of hours and is overkill. That system is not fed by anything other than the panel mounted on the canopy. I could add 2 more panels to my system if I needed more power. My system has been running about a year with out a hitch and without topping up with a charger ever. I have even hooked it up so that the excess I get from the system goes to my start and house batteries while it sits in the driveway and disconnect it when i load up for the ramp

Epever MPPT Solar Charge Controller 40A 30A 20A 10A Battery Regulator With Meter

Search the above on ebay and it has a remote guage to dash mount if required. Sorry but I couldnt post the link

The only other thing to be wary of is House panels arent meant to be bounced around and some have very thin frames. As long as it doesnt bend and break like some of the low profile ones they are fine.

The smell of cooking food is not good on a 21 footer but tastes great. Highly recomend the travel buddy oven