400 Amp Hour – 400 Watt Camper Van Solar Kit

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This DIY Camper Van Solar Kit features 400 watts of solar (4x100w Panels) and 400 Amp Hours of Lithium Batteries wired into a 12v battery bank. It also features a 2000w Inverter/Charger and alternator charging by way of a battery isolator.

Looking for a different size of system? Check here: https://www.explorist.life/solarwiringdiagrams

Not sure how big of a system you need? You need to do a power audit. Here’s a tutorial: https://www.explorist.life/what-size-of-solar-system-is-needed-to-power-a-camper/

Want more solar education in general? Check this: https://www.explorist.life/diy-campervan-solar

Want a high-resolution wiring diagram to print out? Get it here: COMING SOON

Here is a video that shows how this page works:

400Ah Lithium Battery Bank – 4x100W Solar – 2kW Inverter/Charger – Li-BIM Alternator Charging
EXPLORIST.life / Battle Born Solar Bundle [Affiliate Link]100W Solar Panels [Affiliate Link]50A ANL Fuse [Affiliate Link]Roof Entry Gland [Affiliate Link]100A ANL Fuse [Affiliate Link]250A ANL Fuse [Affiliate Link]250A ANL Fuse [Affiliate Link]15A Solar Disconnect [Affiliate Link]Master Battery Disconnect Switch [Affiliate Link]Exterior Shore Power Outlet [Affiliate Link]250A Terminal Fuse [Affiliate Link]300A Terminal Fuse [Affiliate Link]30 A Shore Power Cord [Affiliate Link]2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug2/0 x 5/16 Wire Lug8 AWG x 5/16 Wire Lug6 AWG x 5/16 Wire Lug8 AWG x 5/16 Wire Lug8 AWG x 5/16 Wire Lug6 AWG x 5/16 Wire Lug8 AWG x 5/16 Wire LugTutorial: How to Wire the Li-BIM Battery IsolatorTutorial: How to Wire the AC Side of Your Electrical SystemTutorial: How to Wire for Shore PowerTutorial: How to Wire a Battery BankTutorial: How to Wire a BusbarTutorial: How To Wire DC Distribution Block & AccessoriesTutorial: How to wire a power distribution panel

EXPLORIST.life / Battle Born Solar Bundle [Affiliate Link]

Battery, Inverter, Charge Controller, Battery Monitor Discount Bundle Coming June 1.

100W Solar Panels [Affiliate Link]

50A ANL Fuse [Affiliate Link]

Roof Entry Gland [Affiliate Link]

100A ANL Fuse [Affiliate Link]

250A ANL Fuse [Affiliate Link]

250A ANL Fuse [Affiliate Link]

15A Solar Disconnect [Affiliate Link]

Master Battery Disconnect Switch [Affiliate Link]

Exterior Shore Power Outlet [Affiliate Link]

250A Terminal Fuse [Affiliate Link]

300A Terminal Fuse [Affiliate Link]

30 A Shore Power Cord [Affiliate Link]

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

2/0 x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

8 AWG x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

6 AWG x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

8 AWG x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

8 AWG x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

6 AWG x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

8 AWG x 5/16 Wire Lug

Total wire lug quantities for this wiring diagram are totaled at the bottom of the shopping list below.

Tutorial: How to Wire the Li-BIM Battery Isolator

Tutorial: How to Wire the AC Side of Your Electrical System

Tutorial: How to Wire for Shore Power

Tutorial: How to Wire a Battery Bank

Tutorial: How to Wire a Busbar

Tutorial: How To Wire DC Distribution Block & Accessories

Tutorial: How to wire a power distribution panel

EXPLORIST.life Battery, Charge Controller, Inverter Bundle
Solar Charging System:
  • Qty: 4 – 100 Watt Solar Panel
    • Put these in the sun
  • Qty: 4 – Solar Panel Mounting Feet
    • Help mount solar panels to the roof
  • Qty: 1 – MC4 Connectors
    • Connecting Solar Panels to Wires going to Charge Controller
  • Qty: 40 – 10 AWG Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Solar Panel to Charge Controller
  • Qty: 40 – 10 AWG Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Solar Panel to Charge Controller
  • Qty: 1 – Roof Entry Gland
    • Waterproof Box for Running Wires through Roof
  • Qty: 1 – 1″ Wire Grommet
    • Mounted in roof under Roof Entry Gland
  • Qty: 1 – 15 Amp Solar Disconnect Switch
    • Mounted on Din Rail Between Solar Panels & Solar Contoller
  • Qty: 1 – Din Rail
    • To mount the Solar Disconnect Switch
  • Qty: 1 – Victron Smartsolar MPPT 150 | 35 – Bundle
    • Included in Bundle at Top of List
    • Solar Charge Controller
  • Qty: 5 – 8 AWG Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Charge Controller to Busbar
  • Qty: 5 – 8 AWG Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Busbar & Charge Controller Equipment Ground
  • Qty: 5 – 8 AWG Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Charge Controller to Busbar
  • Qty: 2 – 5/16″ x 8 AWG Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Positive & Negative Wires from Charge Controller to Busbar
  • Qty: 2 – 5/16″ x 8 AWG Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Connecting Busbar to Charge Controller Equipment Ground
  • Qty: 1 – 50 Amp ANL Fuse
    • Check Wire, Lug, and Fuse List at Bottom of List
    • On Positive Busbar Protecting Red Wire to Charge Controller
  • Qty: 1 – ANL Fuse Holder
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Mounted to Busbar under each ANL fuse
CLICK HERE TO ADD ALL AMAZON PRODUCTS TO AMAZON CART

Battery Bank, Busbar, & Inverter
  • Qty: 1 – 2000W Victron MultiPlus Compact Inverter Charger 12V – Bundle
    • Included in Bundle at Top of List
    • This Converts Your 12v DC Power to 120v AC Power
  • Qty: 1 – 400Ah Battle Born Lithium Battery Bundle
    • Included in Bundle at Top of List
    • These Store Your Power
  • Qty: 6 – 2/0 Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Batteries & From Batteries to Busbar
  • Qty: 6 – 2/0 Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Batteries & From Batteries to Busbar
  • Qty: 16 – 5/16″ x 2/0 Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Wires to Batteries & to Busbar
  • Qty: 1 – 300 Amp Terminal Fuse
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attached to Battery Protecting Red Wire to Busbar
  • Qty: 5 – 2/0 Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Busbar & Inverter
  • Qty: 5 – 2/0 Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Busbar & Inverter
  • Qty: 5 – 2/0 Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Busbar & Inverter Equipment Ground
  • Qty: 5 – 2/0 Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between Busbar & Chassis Ground
  • Qty: 2 – 5/16″ x 2/0 Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Positive Wire from Busbar to Inverter
  • Qty: 2 – 5/16″ x 2/0 Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Negative Wire from Busbar to Inverter
  • Qty: 2 – 5/16″ x 2/0 Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Black Wire from Negative Busbar to Inverter Equipment Ground
  • Qty: 2 – 5/16″ x 2/0 Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Black Wire from Negative Busbar to Vehicle Chassis Ground
  • Qty: 1 – 250 Amp ANL Fuse
    • Check Wire, Lug, and Fuse List at Bottom of List
    • On Positive Busbar Protecting Red Wire to Inverter
  • Qty: 1 – ANL Fuse Holder
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Mounted to Busbar under each ANL fuse
CLICK HERE TO ADD ALL AMAZON PRODUCTS TO AMAZON CART

DC Busbar
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AC Circuits & Shore Power
  • Qty: 1 – 30 Amp Shore Power Cord
    • Connecting 30A Flanged Power Inlet to Shore Power
  • Qty: 1 – 30 Amp Shore Power Extension Cord
    • If your Shore Power Cord is too Short
  • Qty: 1 – 30A to 15A Adapter
    • For plugging your 30A shore power cord into a 15/20 amp standard outlet.
  • Qty: 1 – 30A Flanged Power Inlet
    • Connected to Outside of Camper
  • Qty: 10 – 10 AWG 3 Conductor Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From 30A Flanged Power Inlet to Inverter
  • Qty: 5 – 6 AWG 3 Conductor Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Inverter to Power Distribution Panel
  • Qty: 1 – Power Distribution Panel
    • For Distributing Power & Housing Breakers/Fuses
  • Qty: 1 – 50A AC Breaker
    • Check Wire, Lug, and Fuse List at Bottom of List
    • For AC Branch Circuits
  • Qty: 1 – 20A HOMT Tandem AC Breaker
    • Check Wire, Lug, and Fuse List at Bottom of List
    • For Standard 120V Outlet Circuits
  • Qty: 1 – 20A / 30A HOMT Tandem AC Breaker
    • Check Wire, Lug, and Fuse List at Bottom of List
    • For Circuits that include large loads (hot water heater)
  • Qty: 50 – 12 AWG 3 Conductor Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • For AC Branch Circuits
  • Qty: 6 – 120V GFCI Outlet
    • For plugging 120V Appliances into
  • Qty: 6 – Single Gang Electrical Box
    • For 120V GFCI Outlet
  • Qty: 6 – GFCI Wall Plates
    • For 120V GFCI Outlet
CLICK HERE TO ADD ALL AMAZON PRODUCTS TO AMAZON CART

12v Distribution
  • Qty: 1 – Power Distribution Panel
    • For Distributing Power & Housing Breakers/Fuses
  • Qty: 1 – 100 AMP ANL Fuse
    • Check Wire, Lug, and Fuse List at Bottom of List
    • On Positive Busbar Protecting Red Wire to the Power Distribution Panel
  • Qty: 1 – ANL Fuse Holder
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Mounted to Busbar under each ANL fuse
  • Qty: 2 – 5/16″ x 6 AWG Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Positive & Negatives Wires to the Busbar from the Power Distribution Panel
  • Qty: 5 – 6 AWG Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Positive Wire From Busbar to Power Distribution Panel
  • Qty: 5 – 6 AWG Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Negative Wire From Busbar to Power Distribution Panel
CLICK HERE TO ADD ALL AMAZON PRODUCTS TO AMAZON CART

Alternator Charging
  • Qty: – LI-BIM 225 Isolator
    • Connects and Disconnects House and Starting Battery Banks
  • Qty: 5 – 2/0 Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between LI-BIM 225 Isolator & Start Battery
  • Qty: 20 – 2/0 Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Between LI-BIM 225 Isolator & House Battery Bank
  • Qty: 1 – 250 Amp Terminal Fuse
    • Check Wire, Lug, and Fuse List at Bottom of List
    • On Starting Battery Protecting Red Wire to LI-BIM 225 Isolator
  • Qty: 1 – 250 Amp ANL Fuse
    • Check Wire, Lug, and Fuse List at Bottom of List
    • On Positive Busbar Protecting Red Wire to LI-BIM 225 Isolator
  • Qty: 1 – ANL Fuse Holder
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Mounted to Busbar under each ANL fuse
  • Qty: 4 – 5/16″ x 2/0 Lug
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Attaching Positive Wire to Starting Battery, Isolator x2, & House Battery Bank
  • Qty: 5 – 16 AWG Red Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Isolator Ign to Ignition Positive
  • Qty: 1 – Add-a-Fuse Kit
    • Check Wire, Lug, and Fuse List at Bottom of List
    • Used to piggyback power for Ignition+ Wire
  • Qty: 5 – 16 AWG Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Isolator Gnd to Chassis Ground
  • Qty: 10 – 16 AWG Black Wire
    • Check Wire, Lug, and Fuse List at Bottom of List
    • From Isolator Sig to Momentary Switch & from Momentary Switch to Chassis Ground
  • Qty: 1 – Momentary Switch
    • Placed in-line on Isolator Sig Wire
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Misc Tools & Accessories (As Needed/Optional)
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Wires, Lugs, Breakers, and Fuses

Wires
Add Wires Individually to Verify Quantities

Lugs
Add Lugs Individually to Verify Quantities

Fuses & Breakers
CLICK HERE TO ADD ALL AMAZON PRODUCTS TO AMAZON CART

12 thoughts on “400 Amp Hour – 400 Watt Camper Van Solar Kit”

  1. Hi guys, Both the video and the actual diagram image is too big for the screen, it just goes off the page, so I can’t see it. I am on a PC laptop. A few months ago, the page was different, I was able to see it all, but now it has been changed… Hope you can fix this because I’m trying to wire up my solar setup now before we head from southeast to northeast in two weeks. Thanks! And thanks for everything, I have learned so much from you guys!

  2. Hello! 18 year old college kid trying to figure out the solar part of my setup. I stumbled across your videos and they have been very informative. However now I am trying to piece everything together and have one huge amazon order. In noticed the “add all to amazon cart” but its not adding everything for me just some. Is there something im missing that adds EVERYTHING to an amazon cart?

    1. You’re not missing anything. When a product goes out of stock (like a lot of stuff on Amazon, currently), it doesn’t get added to the cart. I currently can’t keep up with what is in and out of stock and don’t have a REALLY good solution to making this easier.

  3. Hey Nate,
    Awesome stuff. I have a few questions, no worries if you don’t have the time to answer.

    1. Grounding: You have an extra ground to the mppt and charger/inverter, then also to the chasis.. why?
    2. I am reading the classic argument of battery versus chasis for ground, seems like battery is better whenever possible. Couldn’t I simply remove all three of those grounds and still have a good circuit since everything is grounded back to the battery?

    1. The ‘extra ground’ is there for in the catastrophic event that something inside the equipment fails and creates a direct short from the positive wire to the metal case of the equipment. This provides a path of electricity back to the battery to close the circuit to allow the fuse to blow and turn off power to that device.

      The ground to the chassis somewhat serves the same purpose for dealing with stray currents that may short to the chassis. Grounding to the chassis also allows for charging via alternator through an isolator without running a negative wire.

      There is more information on those DC equipment grounds requirements found in ABYC E-9.20 (pg 39): https://law.resource.org/pub/us/cfr/ibr/001/abyc.E-09.1990.pdf

  4. Jaimee M Frankian

    Just want to say thankyou for taking the time to do all of this. It is very informative and helpful for a novice like me.

  5. herve your big fan

    Hello Nate,
    I plan to order your components from this affiliates page.
    I might be mistaken but It seems you are missing one 250amp ANL fuse. The One installed between the batteries and the positive bus bar. It shows in your diagram but not in the description.

  6. Hi Nate,

    In the process of building our off-grid skoolie system. Thank you for all your resources and guidance, it’s very helpful. We plan to ‘chase’ snowy/cloudy climates that come with snowboarding so we are going to include alternator and shore power charging capabilities. But the dream is to live completely off-grid.

    Quick question: When we did our power audit your system recommends that we do 400 watts of power, 200 ah lithium battery. So we’ve compared that diagram with this one and it seems the only difference is the addition of 2 more lithium batteries and their appropriate connectors. Would a 400 watt solar system appropriately charge 4 lithium batteries? I thought the rule of thumb was always to double your solar intake to your total battery capacity.

    Any guidance/advice you can provide would be greatly appreciated.

    1. The rule of thumb for charging is to take the amp hours of power you use every day and multiply that number by two to get the watts of solar you’ll need to replinish. For example – 400Ah used per day x 2 = 800W solar needed.

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