My super simple, single battery solution... or... good thing I have AAA

con kso

Adventurer
21 Days in Southern Baja with Single Battery System, 52L ARB and 120watts solar

Happy to say the system worked perfectly! And that was good because my AntiGravity Lithium Jumpstart pack died 3 days into the trip- so, in effect, I had no self jump capabilities if my electrical needs (ARB Fridge and pumping tunes on the beach all day long) depleted my one and only battery.

Here's some photos to help tell the tale:

Aconkso overview.jpg

So here's my rig: CON KSO a 2007 4x4 Tundra with a Callen camper rigged to it. We take off every winter for southern Baja for 3 weeks of full-time camping. This is how we set up on the beach everyday- that's my friend on CON KSO's Aloha Deck and there's my ZAMP portable 120watt panel connected to CON KSO.

conkso solar setup.jpg

Here's our "home" setup- I've got an open air palapa scene that we use as our homebase- while at homebase (called Rancho Payaso) I set up the ZAMP panels every morning as soon as the sun shines. The ZAMP feeds a group 31 Diehard Platinum AGM 100amp/hour deep cycle battery- the battery was expensive (230 bucks) but it performed like a champ the whole time- it never died.

conkso surfshot.jpg

And here's the reason we do all this stuff- surf! And freedom- we tow a small trailer with two dirtbikes and rip around the beach exploring and collecting shells. In short: It's rad.

arb stand.jpg

Here's the major draw on our solar system- an ARB 52L refrigerator. This thing is really, really cool- we did not buy a single bag of ice the entire three weeks we were down south. I had to troubleshoot a couple of electrical bugs (of my own making- I reversed the polarity on the plugs of an accessory 12v socket I rewired- wondered why my voltmeter said it was getting juice but the wouldn't run the 'frige... duh.) but once I got it figured out I ran the **** out of that ARB. I basically set it for -13 degrees celsius the whole time- I wanted to see what would happen if I maxed out the system. I wanted to know if I could kill the battery. Answer.... not even.

ARB temp.jpg

At -13 beer gets slushy.

ARB contents.jpg

We left San Diego with a full sleeve of frozen Costco hamburger patties, frozen meat balls, lunch meat, cheese and I made sure to keep it full with lots of beer. The ARB handled it all- and we found we could freeze water bottles in the thing- super cool!

arb opener.jpg

Custom ARB stand can opener- I banged this stand together in about 20 minutes- it worked great.

Azamp readout.jpg

This was one of the three info screens on the ZAMP system's charge controller. I have no idea what it means in terms of the health of my system but I can say that I drank cold beer all day long and bumped reggae tunes for all my beer drinking friends all day long and never had an issue with my battery. And, understand, I did this EVERYDAY for 21 days (well except while we were on the road driving- then I only drank a couple cold beers.... kidding).

So I'm satisfied with my system. I feel confident that given moderate power demands (ARB and car stereo) you can use a single battery (provided it's a large capacity 31 series- hopefully your vehicle can fit one) and a 120 watt solar system and still have lots of fun on the hot beaches of southern Baja- we sure did.

arbsurfshot.jpg
 

rayra

Expedition Leader
Nice setup and Cold Beer Is Good.


4 comments / suggestions

Going with a single battery solution, keep an eye on that voltmeter and keep things out of the red.

Going with a single battery solution, consider one of the recent paperback-book-sized battery packs which can act as a jumper, ~$100. Just in case. Or wait on your solar to charge things enough.

Solar panel angled perpendicular to the sun is key to max power generation. Baja's anywhere from 23-31deg N. Lat. Call it ~45deg angle on the panel in winter to practicall flat on the ground mid-summer.

Consider some hardware to hang it from your vehicle roof or on your windshield. Ground is convenient, but prone to accident or theft. Some sort of pinned bracket at the roof edge and legs that hold the lower edge out from the side of the vehicle works real nice, and keeps the panel where you won't forget about it when it's time to drive.
 

con kso

Adventurer
Thanks for the suggestions Rayra.

I did have a lithium jump pack from AntiGravity - I jumped a car with it when I first got it, then recharged it for the trip- it showed a full charge (all purple lights illuminated indicating full charge) then I jumped a moto with it in Baja. Two days later is was as dead as a rock- and it would not recharge. I was bummed. I paid about 100 for it on Amazon and was excited for it- I contacted AntiGravity to return it for a replacement- we'll see what happens. If anybody has a very reliable brand of lithium jumppack let me know- I'd pay more for quality.

I like the idea of a pinned bracket to hang it from the side of my camper. Great idea. Maybe even pinned with legs to act as a small shade over my back camper door? The ZAMP comes with its own fold out legs to angle it about 45 degrees on the ground- I'd just try to keep the shadow of the unit directly behind it as the sun moved (actually we were moving not the sun, right?) across the sky. It seemed to work well but I'm always happy for tips. I had so much fun messing with solar and getting free charging power that my girlfriend started calling the solar panel my "solar toy"- pretty accurate considering my behavior.
 

CaliMobber

Adventurer
Awesome to hear! Yea that that 120w is a ton of power for your setup.

14.4v on the display is perfect float, means it totally full. Id be curious to see what the batteries them self are at when it shows 14.4 on the batts( just curious in any voltage drop from the cable size). If you think about it next trip mid day when its showing 14.4 see put a volt meter on the batt and see what it says.

I just got 85w more for my 4runner so I cant wait to try true test next good camping trip.
 

con kso

Adventurer
Thanks Cali! Thanks for the info on the readout, I love getting good info. I'll check it next time we're out and about- may do a couple weeks this Spring. ARB + Solar was perfect- troubled that my lithium jump pack (AntiGravity) just died- do you know of a reliable brand?
 

MT6bt

Rock hound
Nice set-up! I recently purchased a callen from Oxnard, cali area and have been exploring southern California since the 18th of December. It's a sweet camper shell although it weighs a lot....I believe around 650-700 lbs for mine! No matter, I'm just glad it's built well enough to handle the very much truck like ride my dodge provides. Looking forward to my next stage of build which will also include a fridge and solar set-up.
630bf6580f39231a6895585c65dbf3ee.jpg


Ah, crossovers: car like off-road capabilities, minivan looks, and truck fuel economy...
 

con kso

Adventurer
Congrats on your AWESOME Callen and those two friends you have look like good people too. I'm sure mine is really heavy too- and I've been loading it up with all kinds of stuff inside too. I put airbags on it and it rides fine now - I'm sure I'm over taxing my suspension but it handled our three week trip and some tough roads no problem. Good luck with your upgrades and keep me posted.
 

MT6bt

Rock hound
Forget the camper, tell us about those beautiful hounds! (We are suckers for Shepherds.)
I don't want to hog the thread check out my link in my signature for maya, elwood, and my adventures!


Ah, crossovers: car like off-road capabilities, minivan looks, and truck fuel economy...
 

con kso

Adventurer
The Zamp panels that I have are designed to stand up with the folding legs that are attached to them. I think you could probably fabricate some type of clamp to mount them to a roof rack but I think there are other brands that might offer panels ready to be mounted.

There were times when a hard mounted ready-to-go panel would have been convenient for us. For example, we went to a crowded beach where we couldn't park the truck on the sand next to where we were sitting. I put the Zamp up on the rack and locked it with a chain up there. It wasn't that big of a deal but a low profile mounted rack would have been pretty slick for that situation.

Since the cost of panels is relatively low now, I might mount one but then again, with the 100 amp/hour battery I have, I'm good for 50 hours of use without a panel connected.
 

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