Bluetti Apex 300: our review
A 2,765Wh base unit that holds its 3,840W until the battery is empty and grows to 58kWh, but whose 3,840W charging and USB and 12V outputs all come as paid accessories.
Christophe Delpuech has been here from the very start, in 2011, and it is an understatement to say he knows the portable power market inside out. In charge of purchasing and sales, he is the first link in the chain: he decides which products make it into the catalogue and which never will. Needless to say, his opinion carries weight, and a manufacturer does not easily sell him a marketing pitch.
His method is known to the whole team: every charger, portable power station or generator he considers listing goes through a punishing test, pushed to the limit of its capabilities. Repeated charges, borderline power draws, behavior once the battery is warm, real accuracy of the advertised watts: Christophe looks for the gap between the spec sheet and reality, because that is always where the nasty surprises hide. With more than 75 product tests to his name, he has developed a rare instinct for spotting, within minutes, a device that will not live up to its promises.
His favorite line, repeated to the brands' sales reps, sums up the spirit of the house rather well: we don't want your best-seller, we want your best product. It is his buyer's choices, demanding and sometimes unpopular with suppliers, that guarantee the coherence of the catalogue and the trust of readers. The same filter applies on Au Frais, where he steers the selection of portable and fixed air conditioners as well as air purifiers with the same uncompromising eye.
Married and a father of two, Christophe recharges his own batteries out in nature: a tireless hiker, especially attached to the Gorges du Tarn, where he often tests in real conditions the runtime of a power station or a cool box during long family outings. A fairly logical way, for him, to check that a product holds up far from any power socket.
A 2,765Wh base unit that holds its 3,840W until the battery is empty and grows to 58kWh, but whose 3,840W charging and USB and 12V outputs all come as paid accessories.
With 1800 W on gasoline and up to 20 kWh on a propane tank, this inverter generator bets on automation and dual fuel rather than raw power, at the cost of a noise level higher than expected for the technology.
The most powerful generator, and the one that gets the most energy out of a full tank, among the six petrol and dual-fuel generators already reviewed on this site, tarnished by an official 2022 safety recall that has since been fixed.
A conventional petrol generator whose guaranteed sound power of 93 dB sits below the identical 96 dB posted by the four other petrol generators already reviewed on this site, with a deduced fuel burn of roughly one litre per hour at half load on a 15-litre tank.
An inverter generator delivering 6500W continuous, an unprecedented output in this catalogue's sub-category, with a noise level that stays level with much smaller units, though its weight and price sit in a different league.
A single-phase diesel built for automated home backup, with a continuous rating that already beats every other generator in this catalogue. Its 150 kg and a noise level that a sound-insulated canopy does not fully turn into an advantage are worth knowing before buying.
A conventional petrol generator for under 250 pounds, with a 15 litre tank and solid wheels on ball bearings fitted as standard, but a guaranteed sound power of 96 dB(A) that is exactly the same as the three other conventional generators already reviewed on this site.
A worksite diesel that opens up genuine three-phase 400V power for under £1,000, with fuel efficiency clearly ahead of a petrol equivalent. But the sound power the manufacturer actually guarantees, 96.2 dB(A), does not match the 71 dB quoted elsewhere on this site for the same product, and its 148 kg make it a semi-permanent fixture rather than a portable generator.
With 2800 W continuous and a 212 cc engine, the ZI-STE2800IV aims at the same segment as better-established rivals, but concedes the highest noise level and the most limited connectivity of any inverter generator already reviewed on this site.
An inverter generator whose 2000 W peak and 1800 W continuous output check out to the amp on two independent regional spec sheets, but whose noise figure swings between 57 and 64 dB depending on which official source you read, and whose price does not stack up against a direct rival with twice the power for the same money.
A small petrol generator whose 15-litre tank, identical to its bigger sibling the TC-PG 35, gives it the best runtime in its segment, yet its guaranteed sound power of 96 dB(A) is just as high despite 500 W less output.
An inverter generator that delivers 3200 W continuous, consistent with the current it states itself, for a noise level close to that of its half-as-powerful little brother, at a listed price that holds up well against the range found elsewhere in Europe.
Updated on July 29, 2026