
5–3 on shared published metrics
BLUETTI AC2A vs vtoman FlashSpeed 300
AC2A leads on 5 of the 10 metrics both units publish; FlashSpeed 300 leads on 3; 3 are level or not directly comparable. Capacity is within 13%, so this is a like-for-like decision rather than a size mismatch.


Pick this if
BLUETTI AC2A
- List price: $149 vs $270
- Cost per watt-hour: $0.73 vs $1.17
- Max solar input: 200 W vs 90 W
- AC recharge time: 102 min vs 150 min
Buyers who measure value in watts and watt-hours, not in grams and app screens.
Pick this if
vtoman FlashSpeed 300
- Capacity: 230 Wh vs 204 Wh
- Weight: 7.4 lb vs 7.9 lb
- Watt-hours per pound: 31.1 Wh/lb vs 25.8 Wh/lb
Drivers who mainly want jump-start capability plus basic backup power.
Spec by spec
A green arrow marks the better figure on each row. Rows where only one unit publishes a number are shown without a winner rather than guessed.
| Metric | AC2A | FlashSpeed 300 | What it means |
|---|---|---|---|
| Capacity | 204 Wh | 230 Wh | How much energy the unit stores. Sets how long everything else can run. |
| Continuous AC output | 300 W | 300 W | The largest load the inverter will run continuously, not counting surge. |
| Weight lower is better | 7.9 lb | 7.4 lb | The spec buyers most often regret ignoring. |
| List price lower is better | $149 | $270 | Vendor list price at the time of collection; street prices move. |
| Cost per watt-hour lower is better | $0.73 | $1.17 | Price divided by capacity. The fairest single value metric. |
| Watt-hours per pound | 25.8 Wh/lb | 31.1 Wh/lb | Capacity you get per pound carried. |
| Max solar input | 200 W | 90 W | Caps how large an array is useful, and therefore off-grid recharge speed. |
| AC recharge time lower is better | 102 min | 150 min | Vendor-stated time to full from a wall outlet. |
| Rated cycles | 3,000 cycles | 3,000 cycles | Vendor claim for charge cycles before capacity degrades to 80%. |
| UPS switchover lower is better | 20 ms | — | How long the unit takes to switch to battery. Under 20 ms keeps a desktop alive. |
| Warranty | 60 months | 24 months | Stated warranty length from the vendor listing. |
How each one ranks overall
BLUETTI AC2A
- #72 of 104 for Best value (cost per watt-hour) ($0.73)
- #98 of 103 for Most portable (Wh per pound) (25.8 Wh/lb)
- #33 of 106 for Most inverter headroom (147 W/100Wh)
- #46 of 49 for Fastest AC recharge (120 W)
- #68 of 83 for Highest solar input (200 W)
- #89 of 96 for Longest service life (612 kWh)
- #63 of 103 for Most output per dollar (2.01 W/$)
- #52 of 106 for Best for home backup (56/100)
- #29 of 105 for Longest warranty (60 mo)
- #23 of 29 for Quietest under load (45 dB)
vtoman FlashSpeed 300
- #98 of 104 for Best value (cost per watt-hour) ($1.17)
- #85 of 103 for Most portable (Wh per pound) (31.1 Wh/lb)
- #41 of 106 for Most inverter headroom (130 W/100Wh)
- #48 of 49 for Fastest AC recharge (92 W)
- #83 of 83 for Highest solar input (90 W)
- #87 of 96 for Longest service life (690 kWh)
- #89 of 103 for Most output per dollar (1.11 W/$)
- #95 of 106 for Best for home backup (36/100)
- #100 of 105 for Longest warranty (24 mo)
The brands behind them
BLUETTI
The value-and-power buyer who does not mind a heavy box
Best for: Buyers who measure value in watts and watt-hours, not in grams and app screens.
Not for: Buyers who need the lightest possible unit or the simplest possible interface.
Full BLUETTI profile →VTOMAN
The car owner who wants roadside rescue and backup power in one box
Best for: Drivers who mainly want jump-start capability plus basic backup power.
Not for: Buyers whose priority is a refined, well-supported power station.
Full VTOMAN profile →Where these numbers come from. Every figure on this page is taken from BLUETTI’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: www.bluettipower.com/products/ac2a.
Vendor wording for each figure (8)
capacityWh: “Capacity => 204Wh”acOutputW: “300W AC Output/ 600W Lifting Power;”weight: “Weight => 7.9 lbs”solarInputW: “Solar Input => 200W Max”rechargeAcMinutes: “250W) 1.7 Hours BLUETTI AC2A”cycleLife: “LiFePO4 3000+ Cycles”upsSwitchoverMs: “Seamless UPS in 20ms;”warrantyMonths: “Industry-leading 5 years warranty;”
Where these numbers come from. Every figure on this page is taken from vtoman’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: vtoman.com/products/vtoman-flashspeed-300-portable-power-station-副本.
Vendor wording for each figure (7)
capacityWh: “Battery Capacity => 230Wh”acOutputW: “AC Outlets => Continuous 300W, Peak 600W”weight: “Weight => N.W: 7.4 Pounds”solarInputW: “DC Input => 12-30V (90W MAX)”rechargeAcMinutes: “Fully charged in just 2.5 hours”cycleLife: “Lifecycle => 3000+ Cycles”warrantyMonths: “Warranty => 12+12 Months”
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