Last updated: September 16, 2026 — The GoSun Chillest is a 45-liter solar-compatible electric cooler with dual cooling zones that keeps food cold and dry without ice. If you need a portable fridge-freezer combo that can run off-grid on solar power, this is one of the most feature-packed options on the market.
- 45L electric cooler/freezer with two independently controlled temperature zones (-4°F to 68°F)
- Currently $899 on GoSun.co
- Built-in 87Wh battery; runtime varies by conditions and setup
- At 50.6 lbs, it is heavy and pricier than competitors, but the solar integration and dual-zone design set it apart
GoSun Chillest Solar Cooler Overview
The GoSun Chillest is the flagship portable cooler from GoSun, a well-established solar products company known for their solar ovens, coolers, fans, and charging systems. Originally launched via crowdfunding in 2021, the Chillest has since become a full retail product available directly from GoSun and Amazon.
What makes the Chillest special is the combination of dual independent cooling zones, a built-in battery, and full solar panel compatibility. You can set one side as a fridge and the other as a freezer, all while running completely off-grid with solar power.
Key Features and Specifications
| Capacity | 45 liters (holds approximately 60 cans) |
| Temperature Range | -4°F to 68°F (-20°C to 20°C) |
| Cooling Zones | Dual zones with independent temperature control |
| Built-in Battery | 87Wh; runtime varies by conditions and setup |
| Dimensions | 30 x 20 x 22 inches |
| Weight | 50.6 lbs |
| Price | $899 on GoSun.co |
Performance and Cooling
The Chillest uses a built-in compressor to maintain temperatures across two independent cooling zones. You can configure each compartment separately — run one side as a standard fridge at 38°F for drinks and the other as a freezer at -4°F for ice cream and meats. Temperature control is managed through a mobile app or physical touch buttons on the unit.
The 87Wh built-in battery supports cordless use, but GoSun’s current product copy does not name a guaranteed runtime; actual runtime depends on settings, temperature, and conditions. For extended off-grid use, the cooler can also be connected to the GoSun Power 266 external battery pack or paired with a compatible solar panel.
The combination of internal battery plus solar charging makes the Chillest a genuinely viable solution for weekend camping trips, tailgating, beach days, and off-grid living — all without a single cube of ice.
Accessories and Add-Ons
GoSun designed the Chillest as a modular system with several practical add-ons:
- Elbow SolarTable 20W — A mono solar panel that doubles as a flat surface for food prep or card games.
- GoSun Power 266 — An external battery pack for extended off-grid use; check GoSun for current specifications.
- Bluetooth Speaker ($49) — A 5W IPX6-waterproof dual speaker with battery life suited to short outings that mounts to the cooler.
- Wide Umbrella ($49) — An 80-inch diameter umbrella, adjustable from 65 to 80 inches tall with ±45° tilt.
Built-in features include interior LED lighting, organizing baskets, tie-down straps, a cutting board, a bottle opener, all-terrain wheels, and telescopic handles.
Pros and Cons
What We Like
- True dual-zone cooling — run fridge and freezer independently, which most competitors cannot match
- Built-in battery — cordless operation without any external power source; runtime varies by conditions and setup
- Solar ecosystem — seamlessly pairs with GoSun solar panels for off-grid use
- No ice needed — food stays dry, organized, and fresh without soggy messes
- Loaded with accessories — interior lighting, cutting board, organizing baskets, and multiple add-on options
What Could Be Better
- Heavy at 50.6 lbs — significantly heavier than passive coolers of similar size
- Premium price — $899 is steep compared to single-zone competitors like the GoSun Chill ($599) or BougeRV models
- Build quality concerns — some reviews note the construction feels less rugged than premium brands like Dometic
- Compressor noise — the built-in compressor produces audible hum, which may bother some users
Alternatives Worth Considering
The EcoFlow Glacier is the most direct competitor — a portable electric cooler with dual zones, an optional battery, and ice-making capability. It is a strong alternative if you want ice on demand. The Dometic CFX3 45 is a premium single-zone portable fridge-freezer known for tank-like build quality and whisper-quiet operation, though it costs more and lacks dual zones.
For budget-conscious shoppers, the BougeRV Rocky 55-quart and Bodega T45 offer solid single-zone cooling at roughly half the price. GoSun also offers their own Chill ($599) and compact Chillito ($449) as more affordable options in the ecosystem.
Who Should Buy This?
The GoSun Chillest is best suited for off-grid campers, overlanders, and RV enthusiasts who need a serious portable fridge-freezer that operates entirely on solar power. The dual-zone design makes it especially useful for families who want separate fridge and freezer compartments.
It is also a great fit for tailgating, beach outings, and emergency preparedness scenarios where grid power is unavailable. If you already use GoSun products, the Chillest integrates seamlessly with their solar panel and power bank accessories.
Final Verdict
The GoSun Chillest delivers an impressive off-grid cooling experience with its dual temperature zones, built-in battery, and deep solar ecosystem. At $899 it is a premium investment, but for serious off-grid enthusiasts who need a fridge and freezer in one portable unit, it is one of the most capable options available today.
Frequently Asked Questions
GoSun’s current product copy identifies an 87Wh built-in battery but does not name a guaranteed runtime. Actual runtime depends on temperature settings, ambient conditions, and power source.
Yes. The Chillest has two independent cooling zones that each range from -4°F to 68°F (-20°C to 20°C). You can set one or both compartments to freezer temperatures, making it capable of storing frozen foods, ice cream, and meats.
The Chillest can be charged via a standard AC wall outlet, a 12V DC car outlet, or a solar panel like the GoSun Elbow SolarTable 20W. It also works with the GoSun Power 266 external battery pack for extended off-grid runtime.
Both offer dual-zone cooling and optional battery packs. The EcoFlow Glacier adds a built-in ice maker, while the GoSun Chillest has a larger 45L capacity and better solar panel integration. The Glacier tends to have sturdier build quality, while the Chillest is more accessory-rich with its umbrella, speaker, and solar table options.
No. The Chillest is a 100% ice-free electric cooler. It uses a built-in compressor to refrigerate and freeze food, so there is no meltwater, no soggy food, and no need to buy or haul ice bags.
Yes. The Chillest can run from a 12V DC car outlet using the GoSun 12V DC PowerCord accessory. This makes it a practical cooler for road trips and overlanding where you can keep it running off your vehicle’s electrical system.
The GoSun Chill is the smaller, more affordable model at $599. The Chillest is the larger 45L version at $899 with dual independent cooling zones, a built-in battery, and more built-in accessories. The Chillest can function as both a fridge and freezer simultaneously, while the Chill has a single zone.
Robert DeWitt writes about off-grid power gear for Off Grid Power Boom. Based in Arizona, he uses portable power stations, solar panels, and battery systems regularly in extreme heat—focusing on practical runtime, charging speed, reliability, and real-world usability for camping, RV trips, and home backup.
Editorial focus: portable power stations & solar generators, solar panel setups, batteries/inverters, and off-grid preparedness.