The Goal Zero Yeti 500 rates 3.7 among small portable power stations; the Duracell G800 rates 2.5 among mid-size ones. The Goal Zero Yeti 500 costs $199.05 less ($499.95 vs $699).
For outdoor use where weather resistance matters, with enough capacity for a weekend of lights, devices and a small fridge; buyers after value per watt-hour can do better elsewhere.
Amazon Goal Zero $499.95For occasional home backup and outdoor gatherings where the familiar brand, easy recharging and design matter more than price or battery life. Made under license by Southern Telecom; LiFePO4 stations at this price last far longer.
Amazon $699Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
These two sit in different size classes (small and mid-size), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Goal Zero Yeti 500 | Duracell G800 |
|---|---|---|
| Overall rating | 3.7/5 | 2.5/5 |
| Value 25% | 52 $1.00 per rated Wh | 0 $1.13 per rated Wh |
| Tested capacity 15% | 50 not yet independently tested (neutral score used) | 51 81% of rated capacity delivered (1 test) |
| Battery life 15% | 100 LiFePO4, 4,000 cycles, 5-year warranty | 15 Li-ion NMC, 500 cycles, 2-year warranty |
| AC output 15% | 72 500 W continuous AC | 30 800 W continuous AC |
| Charging speed 10% | 82 0-100% on AC in 1 h 24 min | 47 0-100% on AC in 2 h 30 min |
| Portability 10% | 43 68 Wh per kg (16.1 lb (7.3 kg)) | 46 70 Wh per kg (19.4 lb (8.8 kg)) |
| Solar input 5% | 29 200 W max solar input | 17 180 W max solar input |
| Features 5% | 75 UPS (20 ms), 100 W USB-C, app | 55 UPS (15 ms), 100 W USB-C |
No independent test published yet.
| Tested by | Usable AC energy | Of rated | Conditions |
|---|---|---|---|
| CNET | 503 Wh | 81% | 480W load logged with HOBOware; round-trip efficiency 65.90%; recharge from empty 3 h 37 min. |
| Goal Zero Yeti 500 | Duracell G800 | |
|---|---|---|
| Battery | ||
| Rated capacity | 499.2 Wh | 620 Wh |
| Tested usable capacity | - | 503 Wh (81%) |
| Chemistry | LiFePO4 | Li-ion NMC |
| Cycle life | 4,000 to 80% | 500 to 80% |
| Expandable | No | No |
| Output | ||
| AC output | 500 W (1,000 W surge) | 800 W |
| AC outlets | 2 total | 3 total |
| 120V 15A outlets (NEMA 5-15R) | 2 | 3 |
| AC waveform | Pure sine wave | Pure sine wave |
| USB-C ports | 2 (up to 100 W each) | 2 (up to 100 W each) |
| USB-A ports | 2 | 3 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 0 | - |
| UPS / pass-through | Yes (20 ms switchover) | Yes (15 ms switchover) |
| Charging | ||
| AC charging | 500 W | - |
| Full AC charge time | 1 h 24 min (1.4 h in fast mode, 500W (manufacturer spec table; product copy says 90 min); ships in 240W low mode, about 3 h) | 2 h 30 min (2.5 h in fast-charge mode, 4 h at the normal rate; 0-80% in under an hour in fast mode (manufacturer)) |
| Max solar input | 200 W | 180 W |
| Solar input voltage | 8mm 12.3-28V, up to 10A | Up to 30V (XT-60 input) |
| Car charging | 120 W | - |
| Build | ||
| Weight | 16.1 lb (7.3 kg) | 19.4 lb (8.8 kg) |
| Dimensions | 11.32 x 7.82 x 7.8 in | 12.5 x 8.3 x 11.5 in |
| App | Goal Zero Power app | - |
| Warranty | 5 years | 2 years |
| Released | 2024 | 2024-08 |
