US$199.99 / AU$422.15 from Ebay / Not available at Amazon
The last time I took a look at a Jackery Explorer power station,
it was the Explorer 1000, which had a price
that matched is capacity—US$1,000. This time around, I'm looking at
the Jackery Explorer 240 that not only has a shrunken capacity, but
a smaller price tag as well.
Both Jackery power stations feature a similar design, despite
the Explorer 240's smaller footprint and fewer ports. There's an
LCD screen centered above the bulk of the ports. The screen shows
you the battery's current charge level, via both a battery meter
and as a percentage, while also showing the current outgoing and
Note: This review is part of our roundup of portable power banks.
Go there for details on competing products and our testing
Below the screen is a row of various ports. The input port is
used to charge the power station itself, either via the included
power adapter or with the optional solar panel kit. Then there's a stack of two
USB ports, each one capable of charging a device at 5V/2.4A with a
max output of 24W. To the right of the USB ports is a lone 110V AC
outlet that maxes out at 200W, with a 400W surge peak.
Jackery's SolarSaga 60W
solar panel is a $180 optional accessory that can keep your power
station topped off while you are off the grid. Image: Jackery
The Explorer 240 features Jackery's typical gray and orange
theme, which looks great, and has a convenient handle for carrying
the roughly 7-pound device.
The power station has a total capacity of 240Wh. As is the case
with every power station I've reviewed, I put it through a series
of tests to check output and charge rate.
Charging time for the Explorer 240 via the included power
adapter took 7 hours and 28 minutes, while it actually charged
faster via a solar panel, coming in at around five hours.
Powering a 4W desk lamp, the Explorer 240 lasted 35 hours and 43
minutes. That's longer than the higher-capacity Ego Nexus+ power station.
The final test required me to connect a PortaPow power monitor
and DROK load tester connected to a USB port, and record its
output. Here's where things got confusing. The first test result
showed a total output of 274.819Wh—or nearly 35Wh more than the
total capacity of the station. A second test showed 239.840Wh of
output, which is nearly 100 percent of the station's capacity. To
be more specific, it's an efficiency rating of 99.52 percent. The
average of all the power stations I've reviewed is 89.29 percent,
with the closest to the Explorer 240's results being the Aukey PowerTitan 300 at 94.44 percent.
It is practically unheard of for a battery to be nearly 100
percent efficient, as batteries lose some capacity due to
temperatures and various other factors. I've asked Jackery why the
efficiency is so high (high enough to be more than the capacity,
even) but have yet to hear back.
I'm not sure how to feel about the Jackery Explorer 240. On one
hand, multiple runs of the efficiency test all resulted in a high
percentage. But the results are almost too good to be true. It's a
small, compact power station that will surely keep your devices
charged during a quick overnight trip, but I wouldn't use one to
power something critical during a power outage.