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Class B · Class C · Fifth wheel

Victron lithium and electrical upgrades

Run your fridge, AC and coffee maker without a generator or a campground hookup. We design and install complete Victron systems, start to finish. Fixed-price packages, plus custom 24V and 48V systems on request.

Victron inverter/charger, Lynx distribution and lithium battery installed under a Class B bench
Class B system: MultiPlus-II, Lynx distribution, lithium bank

What goes into a system

Every part named on your quote

Your quote lists each component and what it does, so you know exactly what you are paying for. A typical system includes:

Battery
Lithium (LiFePO4) — more usable power at a fraction of the weight of lead-acid, for thousands of cycles.
Inverter/charger
Victron MultiPlus-II — runs 120V outlets and appliances from your batteries and charges fast on shore power.
Driving charge
Victron Orion XS / HP DC-DC chargers, or a second alternator for big banks.
Solar
Victron SmartSolar MPPT charge controllers with roof panels sized to your camping. Solar details
Monitoring
Cerbo GX with touch display and SmartShunt — see charge and draw from the RV or your phone.
Distribution
Victron Lynx with proper fusing, so the system is safe, serviceable and easy to expand.
Air conditioning
Soft start so your rooftop AC can run on battery and inverter power.
Victron chargers and inverter above a lithium battery bank in a fifth wheel compartment
Fifth wheel compartment: Victron inverter and chargers over the lithium bank
Cerbo GX touch screen mounted beside the RV's control panel
Cerbo GX touch display

How it works

From first call to driving away

  1. 10-minute call

    Free. We go over how you camp and what you want to run, and point you to the package that fits. Or try the package picker.

  2. Design visit, $295

    We measure your RV and confirm the layout. You get an itemized quote and a firm schedule, and the $295 comes off the install.

  3. Installation

    Done in our Fresno shop by the same person who designed it.

  4. Walkthrough

    We show you how to use and monitor the system before you leave. Our install work is covered for 1 year.

Before launchFinancing line and apply button go here once a provider is chosen (e.g. "Finance your system from about $X/month").

Already have a factory system?

We fix factory lithium and alternator systems too

Failed secondary alternators, factory lithium systems that won't charge, and charging faults on Roadtrek, Winnebago, Airstream, Thor and Coachmen vans. We diagnose the fault, repair it, and can upgrade the parts that keep failing.

Victron inverter mounted in a Class B van's electrical bay during service
Class B electrical bay during repair and upgrade

Google reviews · 4.5 stars from 44 reviews

Electrical work, in owners' words

★★★★★
“Earlier this year Mitchell did a major lithium batter and inverter upgrade on my Class B (Winnebago Solis 59PX). It consisted of new batteries, Victron Inverter, DC o DC charge, Cerbogx w/touch, solar charge controller, smart shunt, a/c easy start and several other things. The work was clean and he did an excellent job at a fair price. I totally recommend CTS.”
KevinClass B lithium upgrade · July 2025
★★★★★
“Mitchell’s incredibly knowledgeable, friendly, and -I felt- very honest. I had an emergency issue with my RV. He fit me in for an hour, diagnosing the issue in spite being fully booked. He has deep knowledge of the Volta Electrical system my RV has. Great guy. True professional.”
Sidney HFactory lithium system · May 2026
★★★★★
“Mitchel is a pro and will work with him again. He changed my generator oil, changed my water pump, installed my propane alarm, installed my bumper hitch, installed my roof rail, and, most importantly, installed my battleborn/victron solar system. All flawless and at a reasonable price. Very satisfied.”
Mark Anthony BoocBattle Born and Victron solar · June 2023

Read more reviews

Common questions

How much does a lithium upgrade cost?

Our fixed-price Victron packages start at $6,490 (Good), $13,490 (Better) and $18,690 (Best, 24V) installed for a Class B. See the packages page for every RV type and add-on, or call for a custom quote.

Can I run my air conditioner on batteries?

Yes, with the right battery bank, inverter and a soft start. We size the system so you know roughly how many hours of AC you will get before you buy.

Will lithium charge from my alternator?

Yes. We install Victron Orion DC-DC chargers or a second alternator, depending on how much charging you need while driving. Both protect your vehicle alternator.

Do you work on factory-installed systems?

Yes. We diagnose and repair factory lithium and second-alternator systems, including Volta-style systems, and we can upgrade them.

How long does an install take?

Most systems take a few days in the shop. You get a firm schedule with your quote.

Do you sell parts for me to install?

No. We design and install complete systems so we can stand behind the work.

Plan your system

Tell us your RV and what you want to run. We'll set up a 10-minute call and point you to the right system.

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