How Long Will the EcoFlow River 3 Plus Run a 12V Car Fridge?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 286Wh (LFP) |
|---|---|
| Usable energy | 263Wh (92% via 12V/USB DC output) |
| Continuous AC output | 600W |
| Surge rating | 1200W |
| 12V car fridge running watts | 45W |
| Startup watts | 60W |
| Average draw | 18W |
| Estimated runtime | 15 hours |
| Energy per day of typical use | 432Wh |
286Wh × 0.92 = 263Wh usable ÷ 18W average = 14.6 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your 12V car fridge and enter its real wattage.
Recharging with solar
The EcoFlow River 3 Plus accepts up to 220W of solar input. In real conditions that harvests about 825Wh on a sunny day (5 peak-sun hours), or about 750Wh with one 200W panel.
Solar can keep up. A 12V car fridge uses about 432Wh a day at 24 hours of use, so with enough panels and good sun the EcoFlow River 3 Plus can run it indefinitely.
Tips
- Compressor coolers like Dometic, ICECO and BougeRV plug into the 12V car port, which skips inverter losses entirely.
- Running it from the EcoFlow River 3 Plus’s DC port instead of the AC outlet avoids inverter losses: about 20Wh more usable energy.
- The EcoFlow River 3 Plus uses LiFePO4 (LFP) cells, rated for thousands of cycles, so running it down daily won’t wear it out quickly.
Other power stations running a 12V car fridge
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| EcoFlow River 3 | 245Wh | 300W | 13 hours | Yes |
| EcoFlow River 2 | 256Wh | 300W | 13 hours | Yes |
| Jackery Explorer 240 v2 | 256Wh | 300W | 13 hours | Yes |
| Bluetti EB3A | 268Wh | 600W | 14 hours | Yes |
| Jackery Explorer 300 Plus | 288Wh | 300W | 15 hours | Yes |
| Anker SOLIX C300 | 288Wh | 300W | 15 hours | Yes |
| Goal Zero Yeti 500X | 505Wh | 300W | 26 hours | Yes |
| EcoFlow River 2 Max | 512Wh | 500W | 26 hours | Yes |
FAQ
Will the EcoFlow River 3 Plus run a 12V car fridge overnight?
Yes. Eight hours uses about 144Wh, roughly 55% of the EcoFlow River 3 Plus’s usable capacity.
How long does the EcoFlow River 3 Plus take to recharge with solar?
With its maximum 220W of solar input it refills in about 1.7 hours of strong sun. With a single 200W panel, expect about 1.9 hours of full sun.