Hands-On With Caviar's $4,400 'Tesla' Solar-Charging iPhone X

Several months back, a crazy custom "Tesla" iPhone X with a built-in solar charger made headlines across the internet because of its unique design and its $4000+ price tag.

We managed to get our hands on one of the Tesla iPhone X models, designed by custom iPhone maker Caviar, to test it out, and while this isn't something that most MacRumors readers are likely interested in buying, it's always interesting seeing one of these insanely expensive custom devices in person.


According to Caviar, the Tesla iPhone X is so named because the solar charging panel and battery pack built into the back of the device were inspired by Elon Musk. There's no actual association with Tesla aside from the name and the solar design.

The Tesla iPhone X's solar charger isn't a case or a standalone battery pack - it's built right into the back of the iPhone. The solar addition is a 2,300mAh battery that can be used to charge the iPhone, and the battery itself charges using the power of the sun or via USB.

teslaiphone1
When charging using the sun, the battery takes 30 hours to charge, so it's in no way efficient. It is, however, useful if you're stranded sans power, and while home, you can use an included magnetic charging cable to charge it up in just a few hours.

We did notice when charging that the Tesla iPhone's battery frame and magnetic connector got super burn-your-hand hot, which is always a concern because it's not clear how safe custom iPhone components are in day to day use.

teslaiphone3
The device also comes with headphones, a Lightning cable, and a wall adapter, just like any other iPhone, but it has a Caviar-designed box that offers a premium unboxing experience as one would expect from a $4,400 iPhone.

The Tesla iPhone's battery pack is essentially similar to one of Apple's battery cases, except the battery is included at the back of the phone. This does, of course, disable the iPhone X's wireless charging feature, and it adds a good amount of bulk.

teslaiphone2
Along with the solar panel at the back of the device, the Tesla iPhone features carbon fiber accents, gold plating, and Tesla and Caviar-branded labeling on the device.

Aside from the solar panel and the custom design, the Tesla iPhone works like any other iPhone X. Face ID is unhindered, and the buttons work as normal.

teslaiphone4
This isn't a phone designed for the average consumer given its $4,400 price point, but there's a definite customer base for altered iPhones like this, and it's fun to check out even if it's not something we might buy.

What do you think of the Tesla iPhone? Let us know in the comments.

Popular Stories

iOS 26

iOS 26.1 Coming Soon: New Features for Your iPhone and Release Date

Monday October 27, 2025 7:55 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. Below, we outline key details about iOS 26.1. Release Date Given that Apple has yet to seed an iOS 26.1 Release Candidate, which is typically the final beta version, the...
iOS 26

6 New Things Your iPhone Can Do in iOS 26.1

Wednesday October 29, 2025 4:22 am PDT by
Apple is about to drop iOS 26.1, the first major point release since iOS 26 was rolled out in September, and there are at least six notable changes and improvements to look forward to. We've rounded them up below. Apple has already provided developers and public beta testers with the release candidate version of iOS 26.1, which means Apple will likely roll out the update to all compatible...
maxresdefault

Apple TV 4K Could Still Launch Before 2025 Ends: All the Rumored Features

Monday October 27, 2025 4:51 pm PDT by
Apple is designing an updated version of the Apple TV 4K, and rumors suggest that it could come out sometime in the next couple of months. We're not expecting a major overhaul with design changes, but even a simple chip upgrade will bring major improvements to Apple's set-top box. Subscribe to the MacRumors YouTube channel for more videos. We've rounded up all the latest Apple TV rumors. ...
iOS 26

Apple Seeds iOS 26.1, iPadOS 26.1, and macOS Tahoe 26.1 Release Candidates

Tuesday October 28, 2025 1:07 pm PDT by
Apple today provided developers and public beta testers with the release candidate versions of upcoming iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, watchOS 26.1, and visionOS 26.1 updates for testing purposes. The RCs betas come a week after Apple released the fourth betas. The new betas can be downloaded from the Settings app on a compatible device by going to General > Software...
M6 MacBook Pro Feature 1

M6 MacBook Pro: Release Date, Pricing, and What to Expect

Monday October 27, 2025 9:15 am PDT by
Apple this month refreshed the 14-inch MacBook Pro base model with its new M5 chip, and higher-end 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips are expected to follow in early 2026. However, these machines will represent the final update to the current design, with Apple reportedly developing a completely new version of the MacBook Pro packed with next-generation hardware...
iPhone 17 Pro Cosmic Orange

8 Reasons to Wait for Next Year's iPhone 18 Pro

Thursday October 30, 2025 4:42 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
M5 MacBook Pro

Waiting for New Macs? Apple Just Shared Bad News

Friday October 31, 2025 7:32 am PDT by
Apple has just given a strong indication that it will not be releasing any additional new Macs for the remainder of the year. Apple's CFO Kevan Parekh dropped the hint during the company's earnings call on Thursday:On Mac, keep in mind, we expect to face a very difficult compare against the M4 MacBook Pro, Mac mini, and iMac launches in the year-ago quarter.Parekh essentially gave a heads up ...
macos tahoe

Here Are Apple's Release Notes for macOS Tahoe 26.1

Tuesday October 28, 2025 1:21 pm PDT by
Apple today provided developers and public beta testers with the release candidate version of macOS Tahoe 26.1, which means the update will likely see a public launch next week. The release candidate includes notes on what's in the update, so we have a full picture of the new features that Apple has included. macOS Tahoe 26.1 adds AutoMix support over AirPlay, improved FaceTime audio...
ipad mini 7 feature blue

OLED iPad Mini: Release Date, Pricing, and What to Expect

Wednesday October 29, 2025 7:13 am PDT by
Rumors are stoking excitement for the next-generation iPad mini that Apple is reportedly close to launching. So what should we expect from the successor to the iPad mini 7 that Apple released over a year ago? Read on to find out. Processor and Performance Apple is working on a next-generation version of the iPad mini (codename J510/J511) that features the A19 Pro chip, according to...

Top Rated Comments

mcdj Avatar
90 months ago
Looks familiar.



Attachment Image
Score: 57 Votes (Like | Disagree)
DTphonehome Avatar
90 months ago
Possibly the stupidest modified iPhone I've ever seen.
Score: 38 Votes (Like | Disagree)
TIOATIOA Avatar
90 months ago
Ridiculous.

This is not a $4400 iPhone. This is a $1000 iPhone with a $3400 solar battery stuck to the back of it.
Score: 38 Votes (Like | Disagree)
AngerDanger Avatar
90 months ago
It looks so thick, you're probably paying $4.4k to take partially obscured rear camera pictures.



Attachment Image
Score: 23 Votes (Like | Disagree)
bkaus Avatar
90 months ago
Rather ugly ... looks like a patched hobby weekend project. Expected more from Tesla. And why not just a solar powered powerbank?
It’s not from Tesla. It’s someone borrowing their name.
Score: 12 Votes (Like | Disagree)
neilw Avatar
90 months ago
That is astonishingly inelegant, ugly, and generally awful. The "inspired by Elon Musk" is a joke, intended to sponge off Tesla's popularity. Gets "burn your hand" hot and disables wireless charging.

But at least there's some gold plating, so sign me up!
Score: 11 Votes (Like | Disagree)