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frontpageDealStrategist posted Today 12:09 AM
frontpageDealStrategist posted Today 12:09 AM

Energizer MAX 30,000mAh 15W USB-C 3-Port Portable Battery Charger/Power Bank w/ LCD

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$20

$40

50% off
Best Buy
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Deal Details
Best Buy has Energizer MAX 30,000mAh 15W USB-C 3-Port Portable Battery Charger/Power Bank w/ LCD Screen (UE30035C) on sale for $19.99. Shipping is free for My Best Buy Members (free to join) or select free store pickup where stock permits.
  • Note: Availability for pickup may vary by location.
Thanks to Community Member DealStrategist for sharing this deal.

Product Description:
  • Charge your mobile devices quickly and efficiently with this Energizer power bank. This portable charger provides 30,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more. The bright LCD screen displays the current battery level so you always know how much power is left. The 30,000mAh battery provides up to 108 hours of additional power to smartphones while the USB 2.1 Type-A port with Rapid Charge technology delivers power consistently and efficiently. The two USB-C outputs provide up to 15W of charging power. Charge up to three devices at once via one USB-A outputs and two USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A 3 foot USB-C Cable is included for recharging the power bank and external devices quickly and efficiently.

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • While supplies / offer lasts.
    • Rated 4.6 out of 5 stars on Best Buy based on over 210 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
  • About this Store:

Original Post

Written by DealStrategist
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Best Buy has Energizer MAX 30,000mAh 15W USB-C 3-Port Portable Battery Charger/Power Bank w/ LCD Screen (UE30035C) on sale for $19.99. Shipping is free for My Best Buy Members (free to join) or select free store pickup where stock permits.
  • Note: Availability for pickup may vary by location.
Thanks to Community Member DealStrategist for sharing this deal.

Product Description:
  • Charge your mobile devices quickly and efficiently with this Energizer power bank. This portable charger provides 30,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more. The bright LCD screen displays the current battery level so you always know how much power is left. The 30,000mAh battery provides up to 108 hours of additional power to smartphones while the USB 2.1 Type-A port with Rapid Charge technology delivers power consistently and efficiently. The two USB-C outputs provide up to 15W of charging power. Charge up to three devices at once via one USB-A outputs and two USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A 3 foot USB-C Cable is included for recharging the power bank and external devices quickly and efficiently.

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • While supplies / offer lasts.
    • Rated 4.6 out of 5 stars on Best Buy based on over 210 customer reviews.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
  • About this Store:

Original Post

Written by DealStrategist

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Top Comments

jk_black
451 Posts
102 Reputation
Things to consider:

Max input is 10 W. That means 13+ hours to fully charge the battery once you factor in efficiency losses and end-of-charge tapering.
No passthrough. You can either charge or discharge at a time, but not both.
Three ports share a 15 W max output. At least I can charge three AirPods without being throttled. /s
1.3 lb. That is heavier than my mirrorless camera.
I am pretty sure there will be a target audience for this type of product, but it will be very niche.

12 Comments

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Today 12:52 AM
451 Posts
Joined Sep 2014
jk_blackToday 12:52 AM
451 Posts

Our community has rated this post as helpful. If you agree, why not thank jk_black

Things to consider:
  • Max input is 10 W. That means 13+ hours to fully charge the battery once you factor in efficiency losses and end-of-charge tapering.
  • No passthrough. You can either charge or discharge at a time, but not both.
  • Three ports share a 15 W max output. At least I can charge three AirPods without being throttled. /s
  • 1.3 lb. That is heavier than my mirrorless camera.
I am pretty sure there will be a target audience for this type of product, but it will be very niche.
7
Today 01:03 AM
232 Posts
Joined Jul 2013
MannyforeverToday 01:03 AM
232 Posts
One star reviews are concerning. Stops working within weeks. 😬
Today 01:50 AM
7 Posts
Joined Sep 2025
TenseDirt389Today 01:50 AM
7 Posts

Our community has rated this post as helpful. If you agree, why not thank TenseDirt389

This is over the TSA size limit and not allowed for air travel
2
Pro
Today 02:11 AM
22,246 Posts
Joined Jan 2007
BluegrassPicker
Pro
Today 02:11 AM
22,246 Posts
Quote from TenseDirt389 :
This is over the TSA size limit and not allowed for air travel
Thanks for that info. Do you have documentation or a link? Thanks
Today 02:23 AM
126 Posts
Joined May 2014
wilson99Today 02:23 AM
126 Posts
Quote from BluegrassPicker :
Thanks for that info. Do you have documentation or a link? Thanks
https://www.tsa.gov/travel/securi...ies&page=1

100watt hour converted At 3.7V (typical Li-ion cell): ~27,027 mAh
Today 03:14 AM
508 Posts
Joined Oct 2008
saberlolToday 03:14 AM
508 Posts
Pro
Today 03:59 AM
22,246 Posts
Joined Jan 2007
BluegrassPicker
Pro
Today 03:59 AM
22,246 Posts
Quote from wilson99 :
https://www.tsa.gov/travel/securi...ies&page=1

100watt hour converted At 3.7V (typical Li-ion cell): ~27,027 mAh
Thanks, this is all new to me. I looked at your link and it looks to me that these are ok for carry on but not check in luggage. Please tell me if I'm reading this correctly or if I'm wrong. Thanks again.

Quote :
Lithium batteries with more than 100 watt hours

Spare (uninstalled) lithium ion and lithium metal batteries, including power banks and cell phone battery charging cases, must be carried in carry-on baggage only.

With airline approval, passengers may also carry up to two spare larger lithium ion batteries (101–160 Wh) or lithium metal batteries (2-8 grams). This size covers the larger after-market extended-life laptop computer batteries and some larger batteries used in professional audio/visual equipment. There is a limit of two spare batteries per person for the larger lithium ion batteries described above (101–160 watt hours per battery. For more information, see the FAA regulations on batteries.

This instruction covers spare lithium metal and spare rechargeable lithium ion batteries for personal electronics such as cameras, cell phones, laptop computers, tablets, watches, calculators, etc. This instruction also includes external battery chargers (portable rechargers and power banks) containing a lithium ion battery. For lithium batteries that are installed in a device (laptop, cell phone, camera, etc.), see FAA regulations for "portable electronic devices, containing batteries."
Edit: I just did a chatgpt search and it says that some airlines with prior approval might let them in on carry-on luggage.

I was going to use these for a gift for relatives who fly frequently, but I don't want to put them in an awkward position etc., so I cancelled. Thanks again for your info.
Last edited by BluegrassPicker December 17, 2025 at 09:18 PM.

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Today 11:55 AM
115 Posts
Joined Jun 2014
johnk24Today 11:55 AM
115 Posts
good deal for 30k mAh
Today 11:58 AM
98 Posts
Joined Feb 2021
LobsterThiefToday 11:58 AM
98 Posts
Quote from BluegrassPicker :
Thanks, this is all new to me. I looked at your link and it looks to me that these are ok for carry on but not check in luggage. Please tell me if I'm reading this correctly or if I'm wrong. Thanks again.Edit: I just did a chatgpt search and it says that some airlines with prior approval might let them in on carry-on luggage.I was going to use these for a gift for relatives who fly frequently, but I don't want to put them in an awkward position etc., so I cancelled. Thanks again for your info.
Protip: most airlines let you travel with two 5Ah Makita (or similar) batteries. The you can buy the USB adapter that slips over the top of the battery. I normally fly with one, in the bottom of my carryon backpack, with a long cord. Less e-waste too since you can transfer the charging portion to other power tool batteries in your collection.
Today 01:45 PM
444 Posts
Joined May 2011
smohan123Today 01:45 PM
444 Posts
Bought this when it was previously on the front page of SD. The capacity seems to be wrong because it dropped the available percentage enormously in charging one phone. Maybe the battery was calibrating as it was one of the first discharges that I did? Also, charging this pack was insanely slow. Quite heavy as well. I think I'll pay up for an Anker product and just make sure to not lose it.
Today 05:17 PM
20 Posts
Joined Jan 2014
incur86Today 05:17 PM
20 Posts
I bought it last time when on sale of different size, it is very unreliable. Charging in doesn't work everytime, and when to use charge peripherals it went to 100% to 0 in seconds.
Pro
Today 05:32 PM
3,341 Posts
Joined Nov 2005
hondaman82
Pro
Today 05:32 PM
3,341 Posts
reminder that 30000 MAH is over airline 100wh limit, so may not allow to take with your on the plane... ideally 25000 or under

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