Poseidon Nano

Poseidon Nano

Don’t let the size fool you. Poseidon Nano is pocket-sized, waterproof, and MagSafe-ready—built for daily life and sudden emergencies. It holds power for years and gives you a quick charge when you need it most. The perfect EDC to give you just enough battery until you get home.

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$49.99
$59.99

Don’t let the size fool you. Poseidon Nano is pocket-sized, waterproof, and MagSafe-ready—built for daily life and sudden emergencies. It holds power for years and gives you a quick charge when you need it most. The perfect EDC to give you just enough battery until you get home.

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Highlights

  • Pocket-sized, rugged power bank

  • Wireless MagSafe & USB-C Output

  • Delivers 50–70% of a phone charge in a compact package

  • IP67 waterproof and dustproof

  • Holds a charge for 2+ years

  • Backed by a 5 year Dark Energy Warranty

Specs

IP67 waterproof, dustproof, and drop-tested for everyday abuse

3,000mAh battery delivers 50-70% of a phone charge

Wireless charging (5W) with MagSafe compatibility

Operates in -20°F to 120°F

Holds charge for over 3 years in standby mode

Lightweight (under 4 oz.) and pocket-sized for everyday carry

Reinforced shell meets MIL-STD-810G impact standards

Built-in voltage regulator and surge protection for safe charging

Compatible with phones, radios, GPS devices, headlamps, cameras & more

Built-in LED charge indicators

Dark Energy logo doubles as power button with auto shutoff

Built-in leather finger strap for secure carry and quick access

Dimensions

Height: 4.02 in ( 10.2 cm)
Width:  2.68 in (6.8 cm)

Thickness: 0.47 in (1.2 cm)

Weight: 3.8 oz (107 g)

FAQ's

Q: How do I turn my Nano on?

A: Press the Dark Energy logo on the front of the Nano. That’s your power button. Once it’s on, the Nano will stay active while charging a device, then automatically shut off after a short period of inactivity to conserve power.

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Q: How many times will this charge my phone?


A: The Poseidon Nano delivers about 50-70% of a full phone charge, depending on your phone’s battery size. It’s built to give you a reliable boost when you need it most.

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Q: How come the MagSafe charging won’t work on my phone?


A: To use MagSafe charging, your phone must support MagSafe wireless charging. Most iPhones, iPhone 8 and newer work — but if your case is too thick, made of metal, or not MagSafe-compatible, it can block the connection. 

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Q: The Nano gets warm when charging — is that normal?


A: Yes. All power banks generate some heat while charging, especially during wireless charging.

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Compare

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Poseidon Nano

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50-70% of a phone charge

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1 USB-C + Magsafe Wireless output

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Pocket-sized design

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IPX7 waterproof & dustproof

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Ideal for everyday carry

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H: 4.02 in
W:  2.68 in

D: 0.47 in

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Weight: 3.8 oz

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Poseidon Pro

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2–3 full phone charges
 

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2 USB-C + 1 USB-A outputs

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Phone-sized design

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IP68 waterproof & dustproof

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Ideal for multi-day power

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H: 6 in 
W:  3.25 in

D: 0.63 in

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Weight: 9.6 oz

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EVERYDAY BACKUP. ANYWHERE YOU GO.

POCKET-SIZED PEACE OF MIND

Poseidon Nano is small enough to forget about—until you need it. When your battery’s low and your day’s not done, it’s the backup you’ll be glad you packed.

 

POCKET-SIZED PEACE OF MIND

Poseidon Nano is small enough to forget about—until you need it. When your battery’s low and your day’s not done, it’s the backup you’ll be glad you packed.

 

A SAFETY NET IN YOUR POCKET

Most of us don’t think about backup power—until we wish we had it. Poseidon Nano gives you confidence on the road, in the woods, or halfway through a chaotic day.

A SAFETY NET IN YOUR POCKET

Most of us don’t think about backup power—until we wish we had it. Poseidon Nano gives you confidence on the road, in the woods, or halfway through a chaotic day.

DESIGNED FOR DAILY USE

You don’t need much—just enough to finish the day. Poseidon Nano gives you that with one quick snap.

DESIGNED FOR DAILY USE

You don’t need much—just enough to finish the day. Poseidon Nano gives you that with one quick snap.

Customer Reviews

Based on 48 reviews
54%
(26)
8%
(4)
8%
(4)
8%
(4)
21%
(10)
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Alaska Matt
Great power bank

I got this to bridge the gap between work and home or if I am out hiking in the backcountry. I was looking for a smaller lightweight charger and this is perfect. The secret to using it is to attach it at about 50% and it charges full on my 17 promax. Its a 5 watt 1 amp output and if you plan on using the phone while magnetic charging it will basically use as much as it is consuming. The current draw of an iphone 17 is about .87 amps and 4 watts. So if you need a powerful model use the larger battery they offer here. But for backup charging and emergencies this is the best I found. One hack I found for faster charging is to plug the phone in to the battery and you will double the charging speed.

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A.A.

Its a good product for what it’s designed to do, give you a quick charge when you need it most. I bought this product with this in mind and it works great. But if you’re looking for something thatll charge your phone quick to 100% and sum then this isnt the product for you. And instead would recommend its big brother the Poseidon Pro.

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Victor

Works nice

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D.E.

Nice sturdy magsafe charger… pairs well with my solar charger

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Garrett Shinoskie
Great Product!

This little battery bank is a life saver. Easy and convenient to carry with you and adds enough juice to get me through the end of the day. My phone is my business and now with this battery bank I never have to worry about being away from a charger. 👍