Our Verdict
VTOMAN FlashSpeed 300 Wins
Its LiFePO4 chemistry provides 3000 cycles for superior longevity. Choose EnginStar R300 for slightly more capacity at 296Wh, though with fewer cycles.
Bottom Line: VTOMAN FlashSpeed 300 is the better choice. Its LiFePO4 chemistry provides 3000 cycles for superior longevity.
Key Differences
The most significant spec differences at a glance
Battery Capacity
29% moreCharge Time
180% moreCycle Life
67% lessDc Ports
200% moreUSB-A Ports
33% lessAdvantages
Where each product wins
EnginStar
- Battery Capacity: 29% higher (296 vs 230.0)
- Dc Ports: 200% higher (3 vs 1)
VTOMAN
- Charge Time: 180% lower (7 vs 2.5)
- Cycle Life: 67% higher (1000 vs 3000)
- USB-A Ports: 33% higher (2 vs 3)
Who Should Buy Which?
Find the right product for your needs
Buy EnginStar if...
EnginStar Solar Generator, 300W
If you prioritize slightly more raw battery capacity for extended use of lower-power devices and don't mind a longer recharge time, the EnginStar Solar Generator is ideal. Its 296Wh capacity provides more juice than competitors in its class, suitable for short camping, RV trips, or basic home power outages. This is for users who need a reliable, though not premium-longevity, power source with diverse output options like three DC ports for multiple gadgets, and find value in its slightly larger reservoir of power.
Buy VTOMAN if...
VTOMAN FlashSpeed 300 Portable
The VTOMAN FlashSpeed 300 is perfect for the savvy buyer who values long-term durability, quick readiness, and budget efficiency. With its LiFePO4 battery offering 3000 life cycles, it's an excellent investment for frequent use in camping, RVs, or as a dependable home backup. Ideal for users needing fast 2.5-hour charging, 100W USB-C PD for laptops, and a lightweight 7.4 lbs unit, all at a competitive $139.99 price point. It's built for consistent, reliable performance over many years.
Spec Comparison
11 specs compared
| Specification |  |  |
|---|---|---|
| Price | $200 | $140 |
| Rating | 4.3(1.4k) | 4.4(816) |
| Capacity Wh | 296W | 230W |
| Chemistry | Lithium | LiFePO4 |
| AC Output Watts | 300W | 300W |
| Dc Ports | 3 | 1 |
| AC Outlets | 2 | 2 |
| Cycle Life | 1000 | 3000 |
| USB A Ports | 2 | 3 |
| USB C Ports | 1 | 1 |
| Model Number | R300 | PB-82 |
| Charge Time Hours | 7 hrs | 2.5 hrs |
| Weight | — | 7.4 lbs |
Swipe horizontally to see all columns
Pros & Cons
Quick overview of strengths and weaknesses
EnginStar Solar Generator,
- Delivers 300W AC power with 296Wh battery capacity.
- Two 110V pure sine wave AC outlets.
- Recharges via AC, car, or 12-25V solar input.
- Rated for 1000 charge cycles.
- Limited to devices under 300W total output.
- 7-hour recharge time using AC wall adapter.
- Solar panel requires separate purchase.
VTOMAN FlashSpeed 300
- LiFePO4 battery offers 3000 charge cycles
- 7.4 lbs unit weight ensures easy transport
- 100W USB-C PD input/output supports laptops
- 7 simultaneous outputs for multiple devices
- 300W AC output limits power for heavier loads
- 230Wh capacity offers limited runtime
- Only one 100W USB-C port
Frequently Asked Questions
Common questions about this comparison
Which power station is better for long-term daily use?
The VTOMAN FlashSpeed 300 is better for long-term use due to its LiFePO4 battery chemistry, offering 3000 charge cycles. The EnginStar R300, with standard Lithium, provides 1000 cycles, making VTOMAN more durable over time.
What's the main difference in battery capacity and AC output?
The EnginStar R300 has a slightly higher capacity at 296Wh, compared to VTOMAN's 230Wh. Both units deliver a consistent 300W AC output, meaning they can power similar devices, but EnginStar offers longer runtime.
Which unit recharges faster?
The VTOMAN FlashSpeed 300 recharges much faster, taking only 2.5 hours via AC. The EnginStar R300 requires a longer 7-hour charge time when using its AC wall adapter.
Which has better USB-C charging features?
The VTOMAN FlashSpeed 300 features a 100W PD USB-C port, which is excellent for fast-charging laptops and other power-hungry USB-C devices. The EnginStar R300 also has a USB-C port, but without specified PD wattage.
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