Jackery Explorer 300 Plus

Photo from the manufacturer

Ultraportable F1 · Outlet-sized (up to 1 kWh)

Jackery Jackery Explorer 300 Plus

Name: Jackery Explorer 300 Plus
Brand: Jackery
Price: 279.00 EUR
Availability: InStock
Author: JouleSpecs

Manufacturer's list price

279 € ≈ $301

JouleSpecs does not sell and does not show shop prices: check the price where you buy.

Where to buy

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Sheet on the Jackery website →

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Data from official source

Sheet curated by JouleSpecs — We check every spec sheet against the manufacturer's own documentation: each value carries its source and the date we read it. Published Sept. 21, 2026 · Data verified Sept. 21, 2026

The Explorer 300 Plus is a compact power station with a single AC outlet, built to run solar charging through the same USB-C port used from the grid: a different architecture from the rest of the Jackery range, which usually has a dedicated input for the panel.

In a blackout it switches to the battery so fast that a connected router or laptop don't notice, and meanwhile it can keep charging from the grid. Besides Bluetooth it also has home Wi-Fi: it's controlled from the app even while staying in another room of the van or the apartment, but the buttons on the panel are enough on their own to turn the outputs on and off without going through the phone.

It's built for a weekend away, a converted van or a small desk backup for a router and laptop during a power outage; anyone looking for something that handles more than one AC appliance at a time should look elsewhere, because here there's only one outlet.

01 · Verified data

Technical specifications

Cell chemistry LFP (lithium iron phosphate)

Continuous output 300 W

Cost per kWh 968,75 €/kWh

official manufacturer list price — on nominal capacity

Round-trip efficiency Jackery does not state it.

where we looked

Standby consumption Jackery does not state it.

where we looked

Parameter	Value	Source
Dimensions	23 × 15.5 × 16.7 cm (9.1 × 6.1 × 6.6 in)	manufacturer website
Weight	3.75 kg (8.3 lb)	manufacturer website
Nominal capacity	0.288 kWh	Declared by the brand
Cell chemistry	LFP (lithium iron phosphate)	Declared by the brand
Expandable	No	Declared by the brand
Continuous output	300 W	Declared by the brand
Peak output	600 W	Declared by the brand
AC outlets	1	Declared by the brand
Fastest USB-C	100 W	Declared by the brand
Maximum solar input	100 W	Declared by the brand
Backup power	EPS (brief interruption)	Declared by the brand
Switchover time	20 ms	Declared by the brand
Rated cycles	3000 cicli	Declared by the brand
Capacity at end of cycle life	80 %	Declared by the brand
Warranty	3 anni	Declared by the brand
Mounting	Portable	Declared by the brand
Minimum temperature	-10 °C	Declared by the brand
Maximum temperature	45 °C	Declared by the brand
Noise level	45 dB	Declared by the brand
App required for setup	No	Declared by the brand
Declared standards	CE, UN 38.3	Declared by the brand
Official list price	279 €	Declared by the brand
Usable capacity	—	Not declared
Depth of discharge	—	Not declared
Cell supplier	—	Not declared
Maximum expanded capacity	—	Not declared
Peak duration	—	Not declared
Maximum charge power	—	Not declared
0–80% charge time	—	Not declared
Guaranteed throughput	—	Not declared
Guaranteed remaining capacity	—	Not declared
Round-trip efficiency	—	Not declared
Standby consumption	—	Not declared
Ingress protection	—	Not declared
Cell heating	—	Not declared
Wheels and handle	—	Not declared
Works without internet	—	Not declared
Local control	—	Not declared
Open protocols	—	Not declared
Home Assistant integration	—	Not declared
Where the data is hosted	—	Not declared
Remote updates	—	Not declared

Which documents this page rests on

Jackery Explorer 300 Plus User Manual 37 rows of the table

The rest of the data comes from one page on the manufacturer's site, cited row by row in the table above.

A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.

02 · The numbers

What it really costs

Cost per kWh 968.750 €/kWh official manufacturer list price — on nominal capacity

How we worked it out

price: 279
nominal capacity: 0.288

Battery life cycles 1095 cycles warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first

How we worked it out

stated cycles: 3000
warranty years: 1095

Cost of stored energy 0.885 €/kWh warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first
on nominal capacity: the manufacturer does not state the usable figure, so the real cost is higher
without conversion losses, which the manufacturer does not state: the real cost is higher

How we worked it out

price: 279
nominal capacity: 0.288
battery life cycles: 1095
round-trip efficiency: 100
energy delivered over the whole life: 315

Energy density 76.800 Wh/kg

on nominal capacity: the manufacturer does not state the usable figure, so the true number is lower

How we worked it out

nominal capacity: 0.288
weight: 3.750

Power-to-capacity ratio 1.040 C

on nominal capacity: the manufacturer does not state the usable figure, so the true number is lower

How we worked it out

continuous power: 300
nominal capacity: 0.288

These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.

03 · Summary

Pros and cons

In favour

In a blackout it switches to the battery so fast that a connected router or laptop don't notice.
The startup peak comfortably exceeds the continuous rating, so even a small motor-driven appliance starts without tripping anything.
Wi-Fi joins Bluetooth: from the van you control it from the phone even while staying in another room, not just a step away. source
The solar panel charges through the same USB-C port as the wall charger, so the time to fill up doesn't change whichever source you choose.

Worth knowing

Only one AC outlet: two appliances that run on mains power together don't fit without a power strip.
The continuous rating is enough for a laptop or a small camping fridge, not for a hair dryer or a hot plate at higher loads.
Extending the warranty from three to five years means registering the product online or writing to support: anyone who doesn't stays covered for less time.

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