Compact <500Wh
Anker 521 PowerHouse 256Wh portable power station
Anker

Anker 521 PowerHouse

The Anker 521 is a 256Wh LiFePO4 portable power station (PowerHouse) with 300W rated AC output and SurgePower surge support up to 600W—built for laptops, camping, travel, and outdoor backup. Anker markets InfiniPower with LiFePO4 cells, temperature control, and durable construction for long-term use (listing copy cites up to about a decade of performance in ideal conditions). The six-port hub includes two AC outlets, two USB-A ports, one 60W USB-C PD port for fast laptop-style charging, and one car outlet. Solar panel is optional; DC input accepts compatible 11–28V solar chargers (about 65W max per spec) with MPPT-style efficiency claims. Retail bundle copy includes the station, DC adapter, car charging cable, welcome guide, and a 5-year worry-free warranty. At about 8.2 lb and roughly 8.5 × 8.3 × 5.7 in, it stays portable in a bag or vehicle. Weight: about 8.2 lbs.

256WhCapacity
300WOutput
600WSurge
8.2 lbsWeight
compactlightweightcampingtravelremote-work

Solar panel optional. Use an 11–28V solar charger with a DC7909 male connector per Anker guidance.

~$199

$0.78/Wh

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Who is this for?

Camping

Keep lights, fans, and devices charged on multi-day trips

Remote Work

Power your laptop, router, monitor, and accessories all day

Full Specifications

Technical Specifications

Battery Capacity256Wh
Continuous Output300W
Surge/Peak Output600W
Battery TypeLiFePO4
Weight8.2 lbs
Solar Input65W
AC Outlets2 ports
USB-C Ports1 port
USB-A Ports2 ports
Recharge Time (AC)~2 hr 30 min
Dimensions8.5 × 8.3 × 5.7 in
Value$0.78/Wh

How long will it power your devices?

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Power station

256Wh300W output

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85%

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Using Anker 521 PowerHouse (256Wh, 300W output).

Anker 521 PowerHouse 256Wh portable power station

When you're happy with your estimate, compare prices for Anker 521 PowerHouse.

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Compare with similar stations

Other compact <500wh stations worth considering.

Anker 521 PowerHouse 256Wh portable power station
Anker
Anker 521 PowerHouse
Anker SOLIX C300 portable power station
Anker
Anker SOLIX C300
Anker SOLIX C300 DC portable power station
Anker
Anker SOLIX C300 DC
Capacity
256Wh
288Wh
288Wh
Continuous Output
300W
300W
300W
Surge Output
600W
600W
300W
Battery Type
LiFePO4
LiFePO4
LiFePO4
Weight
8.2 lbs
9 lbs
6.2 lbs
Solar Input
65W
100W
100W
Recharge Time
~2 hr 30 min
~50 min
~1 hr
Cycle Life
3,000 cycles
3,000 cycles

Prices are approximate. Affiliate links — helps support WattMatch.

How does the 521 PowerHouse compare?

See a full spec-by-spec breakdown and use-case verdict against each competitor.

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~1 hr AC recharge

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