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frontpageRed_Liz | Staff posted Feb 16, 2026 01:29 PM
frontpageRed_Liz | Staff posted Feb 16, 2026 01:29 PM

4-Pack HW AA USB-C Rechargeable 1.5V 3600mWh Lithium Batteries w/ 4-in-1 Cable

$11

$20

45% off
Amazon
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TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has 4-Pack HW AA USB-C Rechargeable 1.5V 3600mWh Lithium Batteries w/ 4-in-1 Charger Cable on sale for $14.99 - $3.75 (25%) when you apply promo code BLA3AL8H at checkout = $11.24. Shipping is free with Prime or on $35+ orders.

Thanks to Staff Member Red_Liz for sharing this deal.

Note: 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.

Product Details:
  • 3600mWh double a lithium batteries provides longer runtime and more stable power than standard alkaline batteries.
  • Charge 4 AA rechargeable batteries simultaneously in 2 hours via any USB port.
  • Replaces 1000+ disposable batteries.
  • Engineered with a gradual voltage decline from 1.5V. It delivers a longer and more stable total runtime than both alkaline and NiMH batteries.
  • Built-in protections against overcharge, over-discharge, over-voltage, over-current, short circuit, and overheating.

Editor's Notes

Written by Nate650 | Staff

Original Post

Written by Red_Liz | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has 4-Pack HW AA USB-C Rechargeable 1.5V 3600mWh Lithium Batteries w/ 4-in-1 Charger Cable on sale for $14.99 - $3.75 (25%) when you apply promo code BLA3AL8H at checkout = $11.24. Shipping is free with Prime or on $35+ orders.

Thanks to Staff Member Red_Liz for sharing this deal.

Note: 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.

Product Details:
  • 3600mWh double a lithium batteries provides longer runtime and more stable power than standard alkaline batteries.
  • Charge 4 AA rechargeable batteries simultaneously in 2 hours via any USB port.
  • Replaces 1000+ disposable batteries.
  • Engineered with a gradual voltage decline from 1.5V. It delivers a longer and more stable total runtime than both alkaline and NiMH batteries.
  • Built-in protections against overcharge, over-discharge, over-voltage, over-current, short circuit, and overheating.

Editor's Notes

Written by Nate650 | Staff

Original Post

Written by Red_Liz | Staff

Community Voting

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Top Comments

FancyMitten8796
3 Posts
10 Reputation
Listing title says 3600mWh High Capacity but also "2400 Milliamp Hours" in description. I'm confused.
Edit: 2400mAh x 1.5V = 3600mWh.
GreyHerring911
8 Posts
14 Reputation
FWIW I've been testing them discharging at 1A and getting 1600mAh average, so about 2400mWh.

Re: Costco deal - the AAs are fine but lithium AAAs usually have less capacity than NiMH, the circuitry to get them to work at 1.5V takes up too much room in the AAA form factor.
Burnman
44 Posts
22 Reputation
The Costco batteries are lithium ions marketed by Coast. They are very similar with usb-C charging cables. Please try to not be so condescending.

64 Comments

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Feb 21, 2026 10:55 PM
286 Posts
Joined Nov 2024
BeigeCrow552Feb 21, 2026 10:55 PM
286 Posts
Quote from OliveTest4274 :
But what capacity do these ones get at 100mA? If they manage 2400mA at lower discharge rates that's actually awesome for my use case which is in a few smarthome devices that don't like NiMH cells (sensors, remotes, and a pair of thermostats) with very low draw.
I discharged one at 100mA, still about the same ~1600-1700mAh.
Feb 22, 2026 07:56 PM
470 Posts
Joined Mar 2016
harley48Feb 22, 2026 07:56 PM
470 Posts
Quote from BeigeCrow552 :
I discharged one at 100mA, still about the same ~1600-1700mAh.
At very low draw rates on these you don't get much difference. The conversion inefficiency becomes part of the equation. From 100>500 you will see pretty much the same. For AA I start at 500mAh (0.5A}> 1A>1.5A>. If they are holding up I push to 2A. If they are showing good current support I'll go to 2.5A. That maxes out my discharge device and pretty much maxes out any of this kind of battery.

AAA I start at 0.2A > 0.5A. Many of them struggle at 0.5A. Most won't do 1.0A.
AAA Li rechargeable seldom see over 500mAh and many are only 300-400mAh, way less than NiMh. Too little room for the components. The USB charge batteries are particularly impacted.
Personally I'd avoid that size and style unless you really need the 1.5v or are fine with just playing around with them, which is my situation.
Last edited by harley48 February 22, 2026 at 12:59 PM.
Feb 25, 2026 10:23 AM
286 Posts
Joined Nov 2024
BeigeCrow552Feb 25, 2026 10:23 AM
286 Posts
Quote from harley48 :
At very low draw rates on these you don't get much difference. The conversion inefficiency becomes part of the equation. From 100>500 you will see pretty much the same. For AA I start at 500mAh (0.5A}> 1A>1.5A>. If they are holding up I push to 2A. If they are showing good current support I'll go to 2.5A. That maxes out my discharge device and pretty much maxes out any of this kind of battery.

AAA I start at 0.2A > 0.5A. Many of them struggle at 0.5A. Most won't do 1.0A.
AAA Li rechargeable seldom see over 500mAh and many are only 300-400mAh, way less than NiMh. Too little room for the components. The USB charge batteries are particularly impacted.
Personally I'd avoid that size and style unless you really need the 1.5v or are fine with just playing around with them, which is my situation.
Would these shut down if you overamp draw on it? Or would they fry?

Agreed avoid AAA lithiums unless 1.5V is required.
Feb 25, 2026 01:56 PM
470 Posts
Joined Mar 2016
harley48Feb 25, 2026 01:56 PM
470 Posts
Overamp does a thermal shutdown. It progressively sags voltage as the amps go up, then cuts off. The conversion makes heat.

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