I would like a bit more solar power and would like to add another panel to my existing 100 watt system. The Zamp solar controller can handle up to 170 watts so without changing it how could I add say another 50 watt panel? How would I connect it.
Thanks
Hey Neale. The panels I have added to whatever have all been added in parallel. I don't think the current panel has an adapter to provide for this, but I haven't been up on top to really take a look. What I have heard others do is completely swap it out for another set that will already provide an added boost. I'm all about easy, so I generally don't look to recreate the wheel if I don't have to. I would also call the LG directly and ask. If they don't know, know one does.
@texaslgmax thanks. I'll check with my dealership on swapping out for a more powerful panel. Just didn't want to mess around with the controller and wiring.
@neale I added a flex panel and used a Y split at the connector, which is located at the air conditioner mount on top. It can all be bought on-line from Solar Country or something like that, can’t recall, did this two years ago very easily. You do have to upgrade the control panel inside the RV to the 30 amp version if you have a 10 amp version that came with most of these Max’s. Also simple to switch out.
@neale I added a flex panel and used a Y split at the connector, which is located at the air conditioner mount on top. It can all be bought on-line from Solar Country or something like that, can’t recall, did this two years ago very easily. You do have to upgrade the control panel inside the RV to the 30 amp version if you have a 10 amp version that came with most of these Max’s. Also simple to switch out.
Would LOVE it if you could provide more detail with part numbers, pictures and the like. These forums are great and if people who are smart (like you) can share with people who are less smart (like me), it would be great and much appreciated.
rpmax, my source for all the parts was Joe LaVenture at Back Country Solar. He put it all together for me and sent me the Y-split cable for the second panel and the 30amp Zamp controller. Go to his site. He is the smart one. This was 3 years ago and I remember being surprised to find the two pin connector for the Y split to be located at the base of the ac unit assembly on top. Turned out to be very convenient. I have no other pics. I used Eternabond tape and it is truly eternally up there with just a few strips.
RPMAX, sorry to learn just now that Back Country Solar folded. But I found the parts on the Zamp Solar site. Just can’t find a flexible 100w panel on their site. Attaching screenshot of the Y split with its part #. The 30A controller is also on that site...you just need the simple one, not the kit.
RPMAX, sorry to learn just now that Back Country Solar folded. But I found the parts on the Zamp Solar site. Just can’t find a flexible 100w panel on their site. Attaching screenshot of the Y split with its part #. The 30A controller is also on that site...you just need the simple one, not the kit.
Thanks Chris.
@chrisccwtx and others. Just registered for the forum and am also looking at additional solar panel. The 2021 LGM I have came with a 15Amp controller. (ZS-15AW). Zamp says that's good for 250 watts. I'm assuming I just need the Zamp Y Connector and SunPower SPR E Flex 110 panel for the upgrade. That would give me 210 watts of solar panel power. What type of screws or fasteners are all of you using to secure panel to the roof? What length fastener? I have no idea how thick the Adzel panel is on the roof. Also, the Y Connector plus the connector on the panel to be purchased look like they may come up short lengthwise. Did anyone need to use some sort of extension plug for their install? Thanks to all for any help.
@5weight Use Eternabond Tape, not screws, for the panel. It's not going to go anywhere with this crazy strong tape. Mine has been up there for 3 years and hasn't budged. You'll need to upgrade your Controller to the Zamp 30amp version. The one that came with my Max was 10amp--it's about amps not watts. The y-split cable I got from Zamp was longer than I needed, but I don't know what cable or length comes with that brand of Panel you are getting so make sure it has the same connector configurations and enough length.
@chrisccwtx Thanks Chris. Didn't really want to penetrate the roof and invite problems. Attached is a pic of the 15Amp controller that came with my trailer. According to Zamp's website this is good for 250 watts. Are you saying I may still need a controller with 30 Amps? Also, since LG probably sources from many vendors on materials the SunPower panel I would buy is the same as is currently on the trailer. Thank you!!
@5weight It's about the Amps, not the watts. One 110w panel is around 9-10 amps. So two panels puts you OVER 15 amps, thus the need for a 30 amp controller. Then, you're set for up to 3 panels down the road.
