Anker SOLIX F1500 vs VTOMAN FlashSpeed 1500: Specs, Tests & Which to Buy

The VTOMAN FlashSpeed 1500 and the Anker SOLIX F1500 are evenly matched, rated 3.6 and 3.5. The VTOMAN FlashSpeed 1500 leads on tested capacity, charging speed and portability. The Anker SOLIX F1500 wins on AC output, battery life and solar input. The VTOMAN FlashSpeed 1500 costs $10.99 less ($589 vs $599.99).

Higher rated

VTOMAN FlashSpeed 1500

#24 in Large3.6Full review

A 1.5kWh LiFePO4 station with fast AC charging at a low price, good for home backup and RV use if you mostly recharge from the wall.

VTOMAN $589

$589

Anker SOLIX F1500

#25 in Large3.5Full review

For campers and RV owners who want a lot of LiFePO4 capacity for the money and can live with slower charging and extra weight.

Amazon $599.99 Anker SOLIX $599.99

$599.99

Prices were last checked October 20, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Which should you buy?

Choose the VTOMAN FlashSpeed 1500 for tested capacity (78% of rated capacity delivered (1 test) vs 73% of rated capacity delivered (1 test)), charging speed (0-100% on AC in 1 h vs 0-100% on AC in 1 h 50 min) and portability (82 Wh per kg (41.4 lb (18.8 kg)) vs 78 Wh per kg (43.7 lb (19.8 kg))).
Choose the Anker SOLIX F1500 for AC output (1,800 W continuous AC vs 1,500 W continuous AC), battery life (LiFePO4, 3,000 cycles, 5-year warranty vs LiFePO4, 3,000 cycles, 2-year warranty) and solar input (600 W max solar input vs 400 W max solar input).

Scores side by side

Each factor is scored 0-100 against the same fixed reference points for every large portable power station; a clear win is highlighted. How we rank explains each one.

Factor weight	VTOMAN FlashSpeed 1500	Anker SOLIX F1500
Overall rating	3.6/5	3.5/5
Value 25%	88 $0.38 per rated Wh	86 $0.39 per rated Wh
Tested capacity 15%	37 78% of rated capacity delivered (1 test)	14 73% of rated capacity delivered (1 test)
Battery life 15%	76 LiFePO4, 3,000 cycles, 2-year warranty	91 LiFePO4, 3,000 cycles, 5-year warranty
AC output 15%	0 1,500 W continuous AC	21 1,800 W continuous AC
Charging speed 10%	95 0-100% on AC in 1 h	68 0-100% on AC in 1 h 50 min
Portability 10%	68 82 Wh per kg (41.4 lb (18.8 kg))	59 78 Wh per kg (43.7 lb (19.8 kg))
Solar input 5%	13 400 W max solar input	28 600 W max solar input
Features 5%	80 UPS (20 ms), expandable, 100 W USB-C	75 UPS (20 ms), 100 W USB-C, app

Independent capacity tests

VTOMAN FlashSpeed 1500

Tested by	Usable AC energy	Of rated	Conditions
Techno-Science	1,210 Wh	78%	About 1,210Wh delivered into a ~1,040W hair-dryer load on the 230V EU version; recharge drew about 1,560Wh in roughly an hour.