Quick-scan comparison of the three models covered in this guide.
| Specification | EcoFlow Delta 2 | EcoFlow Delta 2 Max | Bluetti Elite 100 V2 |
|---|---|---|---|
| Capacity | 1,024Wh | 2,048Wh | 1,024Wh |
| AC Output | 1,800W | 2,400W | 2,000W |
| Max Solar Input | 500W | 500W | 1,000W |
| Mains Charge (0–80%) | ~80 min | ~80 min | ~45 min |
| UPS Mode | Under 30ms | Under 30ms | No UPS |
| X-Boost (up to 2,200W) | Yes | Yes | None |
| Weight | 14 kg | 27 kg | 16.5 kg |
| Warranty (UK) | 5 years | 5 years | 5 years |
| Typical UK Price | £399–£499 | £849–£1,099 | £549–£799 |
| Full Review | Read Review | Read Review | Read Review |
Who Should Choose Each?
Choose EcoFlow Delta 2 if:
- You want home backup with true UPS protection under 30ms
- You need a lighter unit (14kg) for a caravan or motorhome
- Fast mains top-up (0–80% in 80 minutes) is important
- You want X-Boost to run high-wattage appliances up to 2,200W
- Your budget is around £399–£499
Choose Bluetti Elite 100 V2 if:
- Off-grid solar charging speed is your top priority (1,000W solar input)
- You camp or travel without reliable mains access
- You need a higher 2,000W output and do not need UPS mode
- The heavier weight (16.5kg) is not a problem for your use case
Full Head-to-Head Comparison
| Feature | EcoFlow Delta 2 | EcoFlow Delta 2 Max | Bluetti Elite 100 V2 |
|---|---|---|---|
| Battery capacity | 1,024Wh (LFP) | 2,048Wh (LFP) Larger | 1,024Wh (LFP) |
| AC output (continuous) | 1,800W | 2,400W Highest | 2,000W |
| AC output (surge) | 3,300W | 5,000W | 4,800W |
| X-Boost / appliance boost | Up to 2,200W Yes | Up to 2,200W Yes | None |
| Max solar input | 500W | 500W | 1,000W Highest |
| UPS mode transfer time | Under 30ms Yes | Under 30ms Yes | Not available |
| Mains charge speed (0–80%) | ~80 min | ~80 min | ~45 min Faster |
| AC output sockets (UK) | 4x AC | 4x AC | 4x AC |
| USB-C ports (max PD) | 2x 100W | 2x 100W | 2x 100W |
| Battery chemistry | LFP | LFP | LFP |
| Cycle life (to 80% capacity) | 3,000+ cycles | 3,000+ cycles | 3,000+ cycles |
| Weight | 14 kg Lightest | 27 kg | 16.5 kg |
| App control | Yes (Wi-Fi + BT) | Yes (Wi-Fi + BT) | Yes (BT) |
| Fan noise at high loads | Moderate | Moderate | Loud |
| Warranty (UK) | 5 years | 5 years | 5 years |
| Typical UK Price | £399–£499 Best value | £849–£1,099 | £549–£799 |
Solar Charging
How much solar can each station accept?
This is where Bluetti makes its strongest case. The Elite 100 V2 accepts up to 1,000W of solar input, compared with just 500W on either EcoFlow Delta model. In practical terms that means on a clear UK summer day with good panel orientation, the Bluetti can go from empty to full in around three to four hours via solar alone. The EcoFlow Delta 2 under the same conditions would take six to eight hours to reach 100% via solar. For winter days when solar output is weaker, the higher input ceiling on the Bluetti still gives it an edge.
If you rely heavily on solar — for off-grid living, a narrowboat, or extended trips in a motorhome or caravan — the Bluetti Elite 100 V2's 1,000W solar input is a genuine advantage that the EcoFlow range cannot match at this price point.
Solar panel compatibility in the UK
Both brands work with third-party panels, though you need to check the voltage and current ratings before buying. The EcoFlow Delta 2 accepts 11–60V input at up to 15A. Both use a compatible MC4 or XT60 connector setup. EcoFlow has its own proprietary panel range, which charges slightly more efficiently due to firmware integration, but standard monocrystalline panels from UK suppliers work with both units.
The Bluetti Elite 100 V2 wins clearly on solar with 1,000W input versus 500W. For UK buyers relying on solar as a primary source — particularly in Scotland or on trips in spring and autumn — that extra 500W of input headroom is significant.
UPS Mode and Home Backup
Which is better during a power cut?
EcoFlow wins clearly for home backup use. The Delta 2 and Delta 2 Max both include a UPS (uninterruptible power supply) mode that transfers from mains to battery in under 30 milliseconds. That speed means desktop computers, routers, NAS drives, and medical devices will not register the change. You simply plug your devices into the EcoFlow and leave it connected to the mains. When a power cut happens, the switch is seamless.
The Bluetti Elite 100 V2 does not have a UPS mode. When the mains fails, the Bluetti will not automatically begin powering your devices without manual intervention or a separate bypass setup. For anyone who wants true standby protection, this is a significant gap.
What can you run on each unit?
With 1,800W continuous output and X-Boost extending effective capacity to 2,200W, the EcoFlow Delta 2 can handle most UK household essentials during a power cut: broadband router, LED lighting, phone charging, a laptop, a small television, and a low-wattage kettle or toaster via X-Boost. The EcoFlow Delta 2 Max steps this up further to 2,400W, capable of running a small electric heater or a portable air conditioning unit. The Bluetti Elite 100 V2 outputs 2,000W continuously but cannot exceed its rated output for higher-draw items.
EcoFlow wins clearly for home backup. Its UPS mode is a feature the Bluetti Elite 100 V2 simply does not offer. If seamless switchover during a power cut is important to you, EcoFlow is the only choice here.
Charging Speed
How fast does each charge from a wall socket?
Mains charging speed is a key practical factor, especially if you are preparing for an upcoming power cut or heading out on a trip the next morning.
The EcoFlow Delta 2 uses X-Stream technology to charge from 0 to 80% in approximately 80 minutes from a standard UK 13A socket. The EcoFlow Delta 2 Max charges its larger 2,048Wh pack to 80% in approximately 80 minutes as well, thanks to higher charge input rates. The Bluetti Elite 100 V2 charges from 0 to 80% in approximately 45 minutes when using its maximum AC charging rate — actually faster than the EcoFlow Delta 2 for mains charging.
Bluetti charges faster from the mains but slower via solar, while EcoFlow is slower from the mains but more than adequate for most situations. The difference in AC charging speed is noticeable but not transformative in everyday use.
Car and DC charging
Both units support 12V DC charging from a car or van via a cigarette-lighter adapter, though this is the slowest method and typically adds 5–6 hours for a full charge. For motorhome or caravan use, solar is the more practical option for topping up during the day, and both units support solar while simultaneously outputting power.
The Bluetti Elite 100 V2 wins on AC mains charge speed (0–80% in ~45 min vs ~80 min). EcoFlow wins on solar recharge speed due to the higher 500W solar input. It depends on how you primarily charge your unit.
Weight and Portability
Which is easier to carry?
Both units are heavy relative to smaller portable power banks, but there is a meaningful difference. The EcoFlow Delta 2 weighs 14kg with a solid carry handle — manageable for one person on level ground. The Bluetti Elite 100 V2 is 16.5kg, roughly the weight of a full suitcase and harder to carry up steps at a campsite or in and out of a boot. The EcoFlow Delta 2 Max at 27kg is best treated as a semi-permanent installation in a van or motorhome rather than something you carry regularly.
For caravan users or anyone who moves their power station frequently, the 2.5kg difference between the Delta 2 and the Bluetti Elite 100 V2 is worth considering. Neither unit is light, but the Delta 2 is noticeably easier to manoeuvre.
Form factor and dimensions
The EcoFlow Delta 2 is compact and fits neatly on a shelf or under a bench in a camper van. The Bluetti Elite 100 V2 is slightly larger in footprint due to its heavier construction. Both include recessed handles on the top, and neither has wheels, so longer carries require two people for the Bluetti in particular.
The EcoFlow Delta 2 wins on portability at 14kg vs 16.5kg. If carrying your power station regularly matters, the lighter EcoFlow is more practical.
Warranty and Value
Which brand offers better cover in the UK?
As of 2026, both EcoFlow and Bluetti offer a 5-year warranty on their flagship UK models. The EcoFlow Delta 2, Delta 2 Max, and the Bluetti Elite 100 V2 all now carry 5-year coverage. This is a notable improvement for Bluetti, which previously offered shorter standard cover. In 2026, warranty is no longer a point of differentiation between these two brands at this tier.
Price and value for UK buyers
There is a clear price gap between these units. The EcoFlow Delta 2 typically retails between £399 and £499 in the UK. The Bluetti Elite 100 V2 is typically £549–£799, placing it at least £150 more expensive at list price. For the premium you pay for the Bluetti you receive double the solar input (1,000W vs 500W) and faster AC mains charging — but you give up UPS mode, X-Boost, a lighter chassis, and a lower price. Both carry a 5-year warranty, so the choice comes down to use case.
- UPS mode — automatic switchover under 30ms
- X-Boost to 2,200W for high-draw appliances
- Lighter — 14kg vs 16.5kg
- Better value — typically £150–£300 less
- Equal 5-year warranty
- Double the solar input — 1,000W vs 500W
- Faster AC mains charge — ~45 min vs ~80 min
- Higher continuous output — 2,000W vs 1,800W
For most UK buyers the EcoFlow Delta 2 is the stronger choice. Its UPS mode, X-Boost, lighter weight, lower price, and equal 5-year warranty make it the better all-rounder for home backup, caravan use, and general portability. The feature advantage at a lower price point is the key reason to choose EcoFlow.
The Bluetti Elite 100 V2 earns its place for buyers who rely on solar as their primary charging method. Its 1,000W solar input — double what EcoFlow offers — is genuinely useful off-grid. If you camp or travel without reliable mains access and want the fastest possible solar recharge, the Bluetti justifies its higher price. Just be aware you give up UPS mode, X-Boost, and a lighter chassis in exchange.
The EcoFlow Delta 2 Max is the pick for high-capacity home backup, offering 2,048Wh and 2,400W output with the same UPS mode and 5-year warranty as the Delta 2.