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expiredNavy-Wife | Staff posted Nov 07, 2025 04:10 PM
expiredNavy-Wife | Staff posted Nov 07, 2025 04:10 PM

2-Pack JIJ 4000mAh Rechargeable Magnetic Hand Warmers (Black) $9.99 + Free Shipping w/ Prime or on $35+

$9.99

$33

69% off
Amazon
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Deal Details
JIJ US via Amazon [amazon.com] has 2-Pack JIJ 4000mAh Rechargeable Magnetic Hand Warmers (Black) on sale for $19.99 - 50% off when you apply promo code 8ZB4NAG3 at checkout = $9.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.

Includes:
  • (2) 4000mAh Rechargeable Hand Warmer
  • Dual USB-C Charging Cable
  • Storage Pouch
  • User Manual
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Deal Details
Community Notes
About the Poster
JIJ US via Amazon [amazon.com] has 2-Pack JIJ 4000mAh Rechargeable Magnetic Hand Warmers (Black) on sale for $19.99 - 50% off when you apply promo code 8ZB4NAG3 at checkout = $9.99. Shipping is free w/ Prime or on orders $35+.

Note: Amazon promo codes don't always apply seamlessly. If you run into this issue, refresh the page, re-enter the code, or revisit the cart page.

Includes:
  • (2) 4000mAh Rechargeable Hand Warmer
  • Dual USB-C Charging Cable
  • Storage Pouch
  • User Manual

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6 Comments

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Pro
Nov 07, 2025 04:49 PM
14,078 Posts
Joined Aug 2004
avalon
Pro
Nov 07, 2025 04:49 PM
14,078 Posts
are these the ones out of the dozen other warmer deals?

360 heat (double sided heat)

and magnetic

but what about the 4000mah each?

I know there are higher capacity but they are more expensive and make it larger/heavier?
Original Poster
Pro
Deal Hunter
Nov 07, 2025 04:55 PM
11,563 Posts
Joined Nov 2010
Navy-WifeNov 07, 2025 04:55 PM
Original Poster
Pro
Deal Hunter
11,563 Posts
Quote from CyanPen866 :
showing $19.95 for me
Please apply the 50% off promo code 8ZB4NAG3 at checkout page.Smilie
Pro
Nov 07, 2025 05:02 PM
14,078 Posts
Joined Aug 2004
avalon
Pro
Nov 07, 2025 05:02 PM
14,078 Posts
this is another brand but you can see how the weight on the JIJ is probably not actually 4000mah

but it's more than 2000mah perhaps

https://m.media-amazon.com/images...Ent3OL.jpg

comapre to JIJ 2x3.87 inches 2.88 ounces

https://m.media-amazon.com/images...OPe3tL.jpg

they all do these games

at least JIJ claims the power

and Ilke the switch is on the side not the top surface which others do and is a mistake in design

Attachment 18668548 vs Attachment 18668551
Last edited by avalon November 7, 2025 at 09:18 AM.
Nov 11, 2025 03:51 AM
6 Posts
Joined Dec 2011
dchen2828Nov 11, 2025 03:51 AM
6 Posts
Code didn't work
Pro
Nov 13, 2025 02:42 PM
14,078 Posts
Joined Aug 2004
avalon
Pro
Nov 13, 2025 02:42 PM
14,078 Posts
I bought these and have them for a day now

they are "okay" for $10 and doesn't feel like a waste

BUT

no way they are 4000mah, that's chinese marketing math, they are too small for that

I like the button is on the side and not the top

but why do they get warm when charging? it's in a low-heat mode when charging?
the temperature light doesn't come on but it's warm when charging, weird

the charge cable is super short

the temperature led is not an real led, it's just a switching light to whatever mode

the magnet works but is not a strong magnet

just don't spend more than $10 on these and you'll be okay, might last a year or two
Nov 14, 2025 07:47 AM
12 Posts
Joined Nov 2025
SmithPhyllisNov 14, 2025 07:47 AM
12 Posts
I want to know if the 4000mAh battery capacity is genuine or inflated?
What is the actual capacity?
Is it the 4000mAh battery for 1-Pack or 2-Pack hand warmers?
How many hours can one warmer use continuously?

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