70mai Power Station Hiker 400 portable power station review

This 378W/21,000mAh hours portable power station is ideal for recharging batteries and laptops for off-grid shoots

5 Star Rating
70mai Power Station Hiker 400 powerbank
(Image: © Jamie Carter/Digital Camera World)

Digital Camera World Verdict

It’s not quite as portable as the marketing suggests, but the 70mai Power Station Hiker 400 is much more manageable than, say, the EcoFlow River Max and worth considering for taking on short day or overnight trips where you’ll be off-grid. It’s best thought of as something to leave in the back of a car for emergency recharges while on a shoot or when camping, or for taking to an event where battery and laptop recharges will likely be required. Although its AC outputs are welcome, the 70mai Power Station Hiker 400 is a weekend trip companion mostly suited to keeping smaller devices charged up.


  • +

    Portable size

  • +

    Can recharge laptops via USB-C

  • +

    Lots of ins and outs

  • +

    2x AC for older camera battery chargers


  • -

    No wireless charging pads

  • -

    Heavier than it looks

  • -

    Capacity is only 2x big portable batteries

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Do you need a portable laptop power bank for charging your camera on the go? If you’re taking cameras, laptops and a smartphone off-grid or somewhere you can’t guarantee mains power then the 70mai Power Station Hiker 400 ($399/£322) is for you. One of the smallest and most portable power stations available, its combination of ins and outs – and particularly its two AC mains outlets and ability to be refueled via a solar panel – make it a versatile alternative to a smartphone battery. 

The 70mai Power Station Hiker 400 offers the equivalent of 378Wh. That’s no match for super-serious portable power stations like the Goal Zero Yeti 1500X (which offers 1,516Wh), but it’s much closer to the EcoFlow River Max (576Wh). However, that’s only 21,00mAh, and with a lot of pocket-sized portable batteries now reaching 10,000mAh it need to offer something extra. Here’s how we got on with the 70mai Power Station Hiker 400. 

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Jamie Carter
Astrophotography expert

Jamie has been writing about all aspects of technology for over 14 years, producing content for sites like TechRadar, T3, Forbes, Mashable, MSN, South China Morning Post, and BBC Wildlife, BBC Focus and BBC Sky At Night magazines. 

As the editor for www.WhenIsTheNextEclipse.com, he has a wealth of enthusiasm and expertise for all things astrophotography, from capturing the Perseid Meteor Shower, lunar eclipses and ring of fire eclipses, photographing the moon and blood moon and more.

He also brings a great deal of knowledge on action cameras, 360 cameras, AI cameras, camera backpacks, telescopes, gimbals, tripods and all manner of photography equipment.