Off-Grid Power Systems by MobileMustHave

Aerial view of an RV roof with a full solar array

PLAN - BUILD - INSTALL - SUPPORT

A Smarter Way to Build Your Off-Grid Power System.

Complete system design, expert support, and flexible installation options from planning through power-up.

Free · 2 minutes · zero obligation — hundreds of system decisions, just a few questions for you
★★★★★ 4.6 Google rating
"Exceptional — Top Quality Store" · Google
100,000+ orders shipped
Built by RVers · on the road since 2015
HOW IT WORKS

Off-Grid Ready. Simplified.

01

Build Your System

Free and zero obligation — tell us your rig, appliances, and how long you stay out. Explore as many configurations as you like.

02

Validate with Engineering

Every order includes a validation call with our engineering team — you'll get a scheduling link by email right after purchase, and we confirm your system is exactly right before anything ships.

03

Install Your Way

DIY, DIY + engineer commissioning, or full professional install at our Michigan facility.

Rather talk it through before you buy? Schedule a pre-purchase consultation — build your system first so our team can see exactly what you're looking at before the call.
SYSTEM LEVELS

Take the guesswork out by choosing an expertly curated system.

Our configurator matches you to a tier and prices it for your rig — free, no obligation, emails your results directly to you.

Essentials

Reliable power for getting away
from $9,799
Run Outlets + 1–2 Major Appliances
Microwave or induction — one at a time
Platform24V · single inverter
Output3,000 watts
Storage11.8 kWh · 2× Epoch Elite
Expandableto 35.3 kWh
1× A/C runtime≈ 8 hrs*
Build My System →
MOST POPULAR

Pro

A real power center
from $11,449
Run Outlets + 1–2 Major Appliances or AC
Real household loads — at the same time
Platform24V · dual inverter
Output6,000 watts
Storage11.8 kWh · 2× Epoch Elite
Expandableto 35.3 kWh
1× A/C runtime≈ 8 hrs*
Build My System →

Elite

BY CONSULTATION
High-demand, whole-RV power
from $15,999 · final price in consultation
Run Outlets, Major Appliances + AC
Full 50-amp service — far less load management
Platform24V · dual inverter
Output10,000 watts
ServiceFull 50-amp
StorageSized by consultation
1× A/C runtimeAll day*
Get My Custom Quote →

*Estimated runtime for one 13.5K BTU A/C with soft start on base battery capacity; actual runtime varies with conditions and other loads.

Which one fits your rig? Build My System → Free · no obligation · instant results
MobileMustHave technicians inspecting an installed off-grid power system
WHY MOBILEMUSTHAVE

We Don't Just Sell These Systems. We Live On Them.

MobileMustHave is a team of full-time RVers who design these systems, sell them, and run their own rigs on them every day. Behind us: our power partners — Victron, Epoch — and a professional installation facility that brings every build home.

Every component matched and compatibility-checked before it ships
Custom wiring diagram and preconfigured settings for your exact system
Engineering team reviews and commissions your install — virtual or on-site
Expandable platform — grow capacity instead of replacing everything
Built by full-time RVers — the systems we sell are the systems we live on
MobileMustHave off-grid power system
SEE IT IN ACTION

Watch how a complete off-grid system comes together.

Watch with sound · 90 sec
HOW A COMPLETE SYSTEM WORKS

Dozens of Parts. One System. Zero Guesswork.

Solar, alternator, shore, batteries, inverters, monitoring — dozens of components that have to work as one. That's the part we've already done. You answer the easy questions — we handle the complicated ones.

POWER SOURCES
☀️ Solar
🔌 Shore power
🚐 Alternator
⛽ Generator
CHARGE
Charging equipment
MPPT · DC-DC · chargers
STORE
Battery storage
2 → 6 batteries
INVERT
Inverter / charger
3,000 → 10,000 watts
DISTRIBUTE
Distribution & protection
Fusing · breakers · outlets
SMART MONITORING
Monitoring spans the entire chain — state of charge, solar yield, and loads on your phone. And on a support call, our engineers see what you see.
BUILT AROUND HOW YOU TRAVEL

Everything behind your power system is already figured out.

Your configured system brings together the power you use, the energy you store, the ways you recharge, and the monitoring that lets you see what’s happening. We configure those pieces around your RV, your travel style, and the capability you want.

CORE POWER
Power your RV
A properly sized inverter/charger gives you usable AC power for the outlets, appliances, and everyday loads your system is designed to support.
BATTERY STORAGE
Store energy for later
Lithium battery capacity is sized around how much energy you want available when you're away from shore power.
SOLAR CHARGING
Recharge from solar
Add roof-mounted solar and smart charging equipment to recover energy throughout the day.
DRIVE-TIME CHARGING
Charge while you drive
Available alternator charging can turn travel time into battery charging, where supported by your vehicle and system design.
REMOTE VISIBILITY
Monitor from anywhere
Track battery state, charging sources, loads, and system behavior from your phone when you're away.
WHOLE-SYSTEM DESIGN
Everything works together
Protection, distribution, monitoring, and the supporting architecture are designed as one complete system.

Every system ships with its documentation and a custom wiring diagram for your exact combination.

INSTALLATION

Choose the right install path for you.

Before you hit the road, our engineering team will review your installation, verify every connection, configure your VRM, and make sure your system is ready to go. Choose the option that works best for you.

PATH 1

DIY

You install it — we already designed it. Custom wiring diagram, video guides, and our support team behind you.

PATH 2

DIY + Commissioning

Build it yourself, power it on with us. Our engineers verify and sign off — virtual or on-site, chosen below.

PATH 3

Professional Installation

Tell us what you want your RV to do. The finished system is professionally installed and commissioned through our installation partner, with a full walkthrough before you roll out.

PATH 2 · CHOOSE YOUR COMMISSIONING Two ways our engineers sign off on your install
OPTION A · SCHEDULE AS EARLY AS NEXT DAY

Virtual Commissioning

Submit photos of your install, then join a video call with an engineer — they review everything, walk you through power-on, and configure VRM with you. About 90 minutes for a clean install, from anywhere.

OPTION B · MOST THOROUGH OPTION

On-Site Commissioning

Drive to our facility in Traverse City, Michigan. Our team physically inspects every component — lugs, wiring, fuses, torque specs — sets up VRM, and gets you road-ready on the spot.

MMH engineer
MMH engineer
MMH engineer
The engineers behind your system are real people in Traverse City, Michigan.
The team that designs your system is the same team that reviews your install and answers your questions — by email or scheduled call, 9am–6pm ET.
Talk to a Power Expert →
REAL SYSTEMS, REAL INSTALLS

Our systems in action

Scroll →
Add photos anytime — this strip grows with every install.
Dual MultiPlus-II MMH Pro install
Dual MultiPlus-II · Lynx distribution · Cerbo GX — a real MMH Pro install
SHOP COMPONENTS

Know what you need? Shop the parts we build with.

Every component below is one we install in our own builds and support after the sale. Not sure how it fits together? Build a complete system instead — we size and match everything for you.

Build My System →
FAQ

Common Questions

What happens after I order?

You'll get an email right after purchase with a link to schedule your engineering validation call. It's on every order — we review what you bought against your rig and your loads, and nothing ships until we've confirmed it's the right system for you.

Can I talk to someone before buying?

Absolutely — schedule a pre-purchase consultation. Build your system first so the team knows exactly what you're looking at, then we'll walk through it together. No obligation either way.

Will a system fit my rig?

The configurator accounts for your rig type and available space. Vans, travel trailers, fifth wheels, and motorhomes all have proven layouts — and a consultation settles anything unusual.

Can I really install this myself?

Many of our customers do. You get a custom wiring diagram, video guides, and our engineers by email or scheduled call — and commissioning verifies the work before you rely on it.

How long until it ships?

Systems ship from our Michigan warehouse; you'll see current lead times when you build your system.

What about warranty and support?

Victron and Epoch factory warranties cover the components, and our team supports the whole system — with VRM remote monitoring, our engineers can see what you see on your support call.

Is financing available?

Financing options are shown at checkout — build your system to see your price first.

What if my needs grow?

The platform is expandable — add batteries (up to 6) or solar without replacing what you already own.

Is this just a solar system?

No — solar is one of several charging sources. A complete system coordinates shore power, alternator charging, generator input, lithium storage, inverter power, monitoring, and protection so they work as one. That’s the system we’ve already designed around.

How does the configurator know what I need?

It matches your rig, travel style, appliances, and off-grid goals to a proven system architecture — hundreds of design decisions handled behind the scenes, a few easy questions for you. Every order is then validated by our engineering team before it ships.

Find Out What Your Rig Needs.

The Off-Grid Power System Configurator matches you to a system and prices it — free, no obligation, two minutes.

Prefer to talk it through? Schedule a call · 9am–6pm ET