VTOMAN FlashSpeed 1500
#24 in LargeFull 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
The VTOMAN FlashSpeed 1500 is the better portable power station overall, rated 3.6 to 3.2. The VTOMAN FlashSpeed 1500 leads on value, charging speed and portability. The Lion Energy Safari wins on AC output, battery life and solar input. The VTOMAN FlashSpeed 1500 costs $810 less ($589 vs $1,399).
Lion Energy Safari
#29 in LargeFull review
For RV owners who want high 3,000W output, a TT-30 outlet and a five-year warranty from a US brand, and will pay more per watt-hour for it.
Lion Energy $1,399$1,399
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 value ($0.38 per rated Wh vs $0.87 per rated Wh), charging speed (0-100% on AC in 1 h vs 0-100% on AC in 2 h 18 min) and portability (82 Wh per kg (41.4 lb (18.8 kg)) vs 62 Wh per kg (57.3 lb (26 kg))).
- Choose the Lion Energy Safari for AC output (3,000 W continuous AC vs 1,500 W continuous AC), battery life (LiFePO4, 3,500 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 | Lion Energy Safari |
|---|---|---|
| Overall rating | 3.6/5 | 3.2/5 |
| Value 25% | 88 $0.38 per rated Wh | 13 $0.87 per rated Wh |
| Tested capacity 15% | 37 78% of rated capacity delivered (1 test) | 50 not yet independently tested (neutral score used) |
| Battery life 15% | 76 LiFePO4, 3,000 cycles, 2-year warranty | 96 LiFePO4, 3,500 cycles, 5-year warranty |
| AC output 15% | 0 1,500 W continuous AC | 79 3,000 W continuous AC |
| Charging speed 10% | 95 0-100% on AC in 1 h | 54 0-100% on AC in 2 h 18 min |
| Portability 10% | 68 82 Wh per kg (41.4 lb (18.8 kg)) | 31 62 Wh per kg (57.3 lb (26 kg)) |
| Solar input 5% | 13 400 W max solar input | 26 600 W max solar input |
| Features 5% | 80 UPS (20 ms), expandable, 100 W USB-C | 45 expandable, 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. |
Lion Energy Safari
No independent test published yet.
Specifications
| VTOMAN FlashSpeed 1500 | Lion Energy Safari | |
|---|---|---|
| Battery | ||
| Rated capacity | 1,548 Wh | 1,612 Wh |
| Tested usable capacity | 1,210 Wh (78%) | - |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 3,000 to 80% | 3,500 3,500+ cycles at 100% DOD (manufacturer); remaining capacity at end of rating not stated |
| Expandable | Yes, up to 3,096 Wh | Yes, up to 4,300 Wh |
| Output | ||
| AC output | 1,500 W (3,000 W surge) | 3,000 W (6,000 W surge) |
| AC outlets | 3 total | 5 total |
| 120V 15A outlets (NEMA 5-15R) | 3 | - |
| 120V 20A outlets (NEMA 5-20R) | - | 4 |
| RV 30A outlet (TT-30R) | - | 1 |
| AC waveform | - | Pure sine wave |
| USB-C ports | 2 (up to 100 W each) | 2 (up to 60 W each) |
| USB-A ports | 4 | 2 |
| 12 V car outlet | Yes | Yes |
| DC5521 ports | 2 | - |
| UPS / pass-through | Yes (20 ms switchover) | - |
| Charging | ||
| AC charging | 1,500 W | 800 W |
| Full AC charge time | 1 h | 2 h 18 min (About 2.3 h from the wall (manufacturer); built-in AC charging cord) |
| Max solar input | 400 W | 600 W |
| Solar input voltage | 30-60V (Anderson) | 24-60V (over 36V Vmp), 25A MPPT |
| Car charging | 200 W | - |
| Build | ||
| Weight | 41.4 lb (18.8 kg) | 57.3 lb (26 kg) |
| Dimensions | 15.5 x 11 x 10.6 in | 20 x 13.3 x 13.3 in |
| App | - | Lion Energy Smart app (Bluetooth) |
| Warranty | 2 years | 5 years |