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Navy-Wife | Staff 125K Views
Mar 18, 2026 5:19 PM

LISEN 5000mAh Wireless Qi2 15W Ultra Slim MagSafe Power Bank w/ 22.5W USB-C

$17

$40

57% off
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Update: This popular Frontpage deal is available again with a new promo code.

B King via Amazon has LISEN 5000mAh Qi2 Wireless 15W Ultra Slim MagSafe Power Bank w/ 22.5W USB-C & 1.6' USB-C to USB-C Cable (Ice Gray) on sale for $24.98 - $7.99 off when you apply promo code TCS6NMYT at checkout = $16.99. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Hunter Navy-Wife for posting this deal.
  • Note: You must be logged in to apply promo codes; promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.
Details:
  • Ultra-slim Qi2 magnetic power bank: 0.3 inches thick, 5,000mAh capacity; Qi2-certified for efficient 15W wireless charging
  • Fast charging: 15W wireless (up to 50% in 1 hour for iPhone 17); 22.5W wired; speed reduces after 75% charge
  • Portable & lightweight: Thinner than iPhone 15; 12N strong magnets for secure snap-on fit; ideal for commuting, travel, classes, parties, concerts
  • High safety & certifications: Lithium-polymer battery with NTC temperature control and overcharge protection; FCC, CE, RoHS, UL, PSE, Qi2 certified; no recalls or safety issues
  • Compatibility note: Optimized for MagSafe iPhones (12–17 series); non-MagSafe cases may cause heating; avoid gaming while charging
  • Package contents: 1× LISEN ultra-slim MagSafe power bank, 1× 1.6ft USB-C to USB-C cable

Editor's Notes

Written by persian_mafia | Staff
Expired promo code:
  • 7GFLJVTK

Original Post

Written by Navy-Wife | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Update: This popular Frontpage deal is available again with a new promo code.

B King via Amazon has LISEN 5000mAh Qi2 Wireless 15W Ultra Slim MagSafe Power Bank w/ 22.5W USB-C & 1.6' USB-C to USB-C Cable (Ice Gray) on sale for $24.98 - $7.99 off when you apply promo code TCS6NMYT at checkout = $16.99. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Hunter Navy-Wife for posting this deal.
  • Note: You must be logged in to apply promo codes; promo codes are typically for one-time use and don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.
Details:
  • Ultra-slim Qi2 magnetic power bank: 0.3 inches thick, 5,000mAh capacity; Qi2-certified for efficient 15W wireless charging
  • Fast charging: 15W wireless (up to 50% in 1 hour for iPhone 17); 22.5W wired; speed reduces after 75% charge
  • Portable & lightweight: Thinner than iPhone 15; 12N strong magnets for secure snap-on fit; ideal for commuting, travel, classes, parties, concerts
  • High safety & certifications: Lithium-polymer battery with NTC temperature control and overcharge protection; FCC, CE, RoHS, UL, PSE, Qi2 certified; no recalls or safety issues
  • Compatibility note: Optimized for MagSafe iPhones (12–17 series); non-MagSafe cases may cause heating; avoid gaming while charging
  • Package contents: 1× LISEN ultra-slim MagSafe power bank, 1× 1.6ft USB-C to USB-C cable

Editor's Notes

Written by persian_mafia | Staff
Expired promo code:
  • 7GFLJVTK

Original Post

Written by Navy-Wife | Staff

Community Voting

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Top Comments

jaydubya
223Comments
110Reputation
This complaint comes up all the time and has been explained by earlier posters, there are two different issues at play here.

tl;dr: The Wh rating provided on power banks is agnostic of the voltage and would be a better "apples to apple" comparison of power bank capacity than mAh ratings. Wireless charging is inefficient and compared to wired loses 25-50% capacity due to losses.

The details:
Specified mAh capacity refers how much power can be delivered at a certain current over the time that the battery has power. If this is not specified with a particular voltage is, it's referring to the voltage of the battery cells inside the power bank, which is why they specify at 3.6 V.

The voltage can be upconverted to a "standard" USB 5V but that reduces the mAh rating proportionally . I've looked at my Anker/Ravpower/Belkin/Inui/Baseus banks and they all specify at 3.6 V. Sometimes the conversion to 5V is also given but not usually.

Wh capacity of a battery pack takes the voltage into account, and is a "clearer" representation of power capacity.

As a second issue - wireless charging is intrinsically much less efficient than wired charging (even when wired, a "3000 mAh battery pack" may need 4000 mAh to charge it), and at best case scenario wireless charging only delivers 3/4 (compared to wired charging) of the power capacity to the charged unit, with the remain lost to heat and other conversion inefficiencies. Realistically with wireless charging even in best case scenarios a 3000 mAh phone battery may only be half charged by a 3000mAh power bank.

At worse (poor alignment, greater separation) it could be less than half of this.
Go to Comment
SupremeDeals
1.2KComments
139Reputation
Most all companies say 5000 mah/3.6v, which is only 3000 mah/5v. Including popular Baseus, Ugreen, Anker... etc
Go to Comment
Backhome77
2.4KComments
513Reputation
If you get this, try it out with your device and case while it's still in the return window. It works fine with my work phone, an iPhone 13 in an aftermarket case, but it barely works at all with my personal phone, and iPhone 15 in an OEM Apple case - constantly disconnecting/reconnecting, and barely charges at all. Unfortunately, that's the phone I bought to use for. I bought it for an upcoming vacation, and by the time I got back, it was past return period.
Go to Comment

Community Reviews

This ultra slim Qi2 MagSafe power bank stands out for pocketable, cable free top ups on the go, especially with Samsung Galaxy and Pixel phones in MagSafe cases or an iPhone snapped on for travel. The slim shape and light feel make it easy to carry in a purse, backpack, or pocket, and the build quality and price are described as solid. The main caveat is capacity and consistency, since the pack is effectively around 3000mAh after conversion losses and wireless charging, so it may only add a partial charge. Fit and charging behavior also vary by phone and case, with some setups disconnecting or failing to align well.

  • The power bank can snap to the back of a Samsung Galaxy S23 and charge without cables.

    tshrimp

  • The power bank can work with a MagSafe case on Samsung S24 Ultra for on-the-go charging.

    luca_bras1

  • The deal can be improved by stacking a 5% off page coupon across multiple items.

    bbbbbrian

  • The promo code can eventually apply correctly after retrying in different browser modes and refreshing.

    PirateMorgan

  • Wireless charging can disconnect or reconnect frequently on some iPhone models and cases.

    MooosheBackhome77

  • The advertised 5000mAh capacity can translate to an effective usable capacity closer to about 3000mAh due to conversion losses.

    SupremeDealssharpaxe

  • Wireless charging performance can be poor on certain Samsung devices when Qi2 coil placement mismatches.

    k6tcher

  • The power bank can lose charge when left unused and can take a long time to recharge.

    syriako

Common Questions (5)

AI-generated summary based on comments from the community. Updated ago

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82 Comments

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Mar 19, 2026 11:27 PM
12 Comments
Joined Nov 2014
CaptBoogerPantsMar 19, 2026 11:27 PM
12 Comments
I was able to stack to get the 8bucks off. Plus some Amazon rewards brought the cost down to 2.66. Perfect for my spring break trip. Thanks OP
1
Mar 20, 2026 4:28 AM
2.5K Comments
Joined Jul 2010
tshrimpMar 20, 2026 4:28 AM
2.5K Comments
Quote from TheMexican View quoted comment :

Thanks for pointing this out. would rather spend a few dollars more for 5000mAH
They are all like this. Battery is 5k, but there is loss when charging, so effective 3k. Nice to actually see a company show this info.
2
Mar 20, 2026 3:06 PM
21 Comments
Joined Nov 2020
RealalphaMar 20, 2026 3:06 PM
21 Comments
Quote from Moooshe View quoted comment :
It charges my Pixel 10 Pro XL fairly quickly but it seems to "disconnect" every minute or so.
I have same phone , i have same issue
Mar 20, 2026 4:55 PM
19.2K Comments
Joined Feb 2010
BinarMar 20, 2026 4:55 PM
19.2K Comments
When your device catches fire , make sure you send a strong worded letter to seller/manufacturer

Stick with brand names like Anker where ratings are real, device has had QC done and you have a US headquarters location to collect if device damages your property

Business Name: Shenzhen Shanshanzikeji Youxiangongsi
Business Address:
民治街道
深国际华南数字谷1#楼10E
深圳
龙华区
广东
518131
CN
2
7
Mar 20, 2026 5:18 PM
245 Comments
Joined Dec 2008
anutaMar 20, 2026 5:18 PM
245 Comments
Quote from PirateMorgan View quoted comment :
Can't replicate. Only took $1.25 off $24.99 "Limited Deal". Tried numerous times to input code, even incognito mode, accepts it, but only reduces by $1.25

EDIT - Very weird, finally took on chrome in standard mode and refreshing three times.
Can confirm working, keep trying! Thanks OP!!

And thanks Slickdeals for spending my money!! LOL
Pretty good dealin terms of quality and price
Mar 20, 2026 8:51 PM
48 Comments
Joined Dec 2019
StrongStew507Mar 20, 2026 8:51 PM
48 Comments
In the reviews, people say the capacity is only 60 percent of what is listed, making it 3000 mah. Apparently that's also what it says on the back of the actual battery. Sus?
Last edited by StrongStew507 March 20, 2026 at 03:39 PM.
1
Mar 21, 2026 11:33 AM
4.3K Comments
Joined Jul 2008

This comment has been rated as unhelpful by Slickdeals users.

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Mar 21, 2026 1:28 PM
302 Comments
Joined Aug 2010
sharpaxeMar 21, 2026 1:28 PM
302 Comments
Quote from Moooshe View quoted comment :
Huh. The box says 5000 but the battery itself actually does say 3000. what the f***.
The actual capacity is 5000mAh of the battery but there are losses during charging phone or other devices like power conversion and heat. Therefore the rated capacity is only around 3000mAh.
1
2
Mar 21, 2026 4:36 PM
432 Comments
Joined Jun 2007
PharoahUBMar 21, 2026 4:36 PM
432 Comments
Anyone know how much charge you can get on a newer iPhone with one full battery? Bought one on here a few weeks back and it only does about 40%.
Mar 21, 2026 4:48 PM
150 Comments
Joined Dec 2014
jaildecayMar 21, 2026 4:48 PM
150 Comments
Quote from Realalpha View quoted comment :
I have same phone , i have same issue
Same with mine on a iPhone 17 pro max. I wouldn't buy again it's not 5000. I'd stick with the slimmist 10k you can get.
Mar 21, 2026 9:56 PM
174 Comments
Joined Sep 2005
pjsullivMar 21, 2026 9:56 PM
174 Comments
I got one a couple weeks ago when it was previously posted. I'm pleased with it so far but don't normally have to charge my phone a lot. I like that it is fairly slim.
Mar 21, 2026 11:40 PM
23 Comments
Joined Jan 2014
qxzrh80Mar 21, 2026 11:40 PM
23 Comments
Quote from OPTICSOURCE View quoted comment :
Is that really an issue for such a small battery?
yes. It has to be ccc accredited to fly within China and depart from China. Otherwise, you have to discard at the airport.
1
Mar 22, 2026 2:37 AM
381 Comments
Joined Jan 2013
AndyP5910Mar 22, 2026 2:37 AM
381 Comments
Just returned it. It work but with case off. With case on, it will go in and out of charging and magnet not sitting right due to lip that surrounds the camera bulge from the case making it little bigger than actual phone by itself. I am using iPhone 16 pro with Casify case. I have Anker branded one that works without issue with case on.
1
Mar 22, 2026 8:02 AM
112 Comments
Joined Dec 2007
mayursbMar 22, 2026 8:02 AM
112 Comments
Quote from PharoahUB View quoted comment :
Anyone know how much charge you can get on a newer iPhone with one full battery? Bought one on here a few weeks back and it only does about 40%.
It depends on iPhone version and battery capacity. Like the iPhone 17 pro max has 5088 mAh battery and this can charge up to 3000mAh in single charge. So wouldn't do 1 full recharge in a cycle.

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Mar 22, 2026 8:07 AM
112 Comments
Joined Dec 2007
mayursbMar 22, 2026 8:07 AM
112 Comments
I plan to return this power bank as well, can't even do 1 full recharge of iPhone 13 from a single charge of Power Bank with the rated capacity of 3000 mAh. They should make it clear in the Product description.
Last edited by mayursb March 22, 2026 at 02:39 AM.
1

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