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popularDesertGardener | Staff posted Nov 05, 2025 05:28 PM
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popularDesertGardener | Staff posted Nov 05, 2025 05:28 PM

4-Pack HW Rechargeable AA Lithium Batteries 2800mWh w/ Micro USB Cable $6.99 + Free Shipping w/ Prime

$6.99

$13

46% off
Amazon
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TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon [amazon.com] has 4-Pack HW Rechargeable AA Lithium Batteries 2800mWh w/ Micro USB Cable (Yellow) on sale for $9.99 - $3 off with code 5CXXH2NE applied at checkout = $6.99. Shipping is free w/ Prime or $35+ orders.
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TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon [amazon.com] has 4-Pack HW Rechargeable AA Lithium Batteries 2800mWh w/ Micro USB Cable (Yellow) on sale for $9.99 - $3 off with code 5CXXH2NE applied at checkout = $6.99. Shipping is free w/ Prime or $35+ orders.

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Nov 05, 2025 05:57 PM
426 Posts
Joined Mar 2016
harley48Nov 05, 2025 05:57 PM
426 Posts

Our community has rated this post as helpful. If you agree, why not thank harley48

Certainly inexpensive for 1.5v Li AA rechargeable. Know what you.....might....be getting.
I DO NOT have experience with these particular cells. But I DO have and tested:
HW 1.5v AA 3500mWh/2333mAh - Mine are the NON-USB charging. USB charging provides some convenience to some people BUT, at the expense of some capacity. It's a challenge to put all the components in the small 'can'. USB charging extracts this penalty.

The capacity of this in real testing at 0.5A - mAh current for 4 cells is:
- 1880-81%; 1870-80%; 1870-80%; 1764-76%
So the probable capacity of these is: 2800mWh/1.5v = 1897mAh x >0.80 (% capacity of the previous cells) = ~1500mAh. This could be worse due to the USB charging penalty.

I do not know if this cell line provides step down voltage. The 3500mWh cells do. This is what I found:
When ~480mAh remains they drop from 1.5v > 1.1v. This allows some notificatio that the cell needs charging.
The down side is MUCH longer time spent at 1.1v, at the expense of less time spent at 1.5v. So the 3500mWh cells have a 1.5v working capacity of ~1400mAh.
Last edited by harley48 November 17, 2025 at 11:03 AM.
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Nov 05, 2025 06:06 PM
93 Posts
Joined Apr 2016
flatcardNov 05, 2025 06:06 PM
93 Posts
Do they explode?
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Nov 05, 2025 06:14 PM
1,324 Posts
Joined Mar 2023

This comment has been rated as unhelpful by Slickdeals users.

Nov 05, 2025 06:56 PM
69 Posts
Joined Aug 2023

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Nov 05, 2025 06:58 PM
955 Posts
Joined Apr 2013
TalysdaddyNov 05, 2025 06:58 PM
955 Posts
Reviews say they work with Blink cams, exactly why I need them. Thx Op!
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Nov 05, 2025 07:21 PM
1,652 Posts
Joined Jun 2018
ScoobieSnax
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Nov 05, 2025 07:21 PM
1,652 Posts

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

Spend an extra $2.50 and get an 8 pack with usb c charger. Likely the same real world capacity as these.

https://slickdeals.net/f/18736096
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Nov 05, 2025 07:33 PM
806 Posts
Joined Feb 2006
scoobysteveNov 05, 2025 07:33 PM
806 Posts
Micro USB? Are we back in 2007?
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Nov 05, 2025 08:29 PM
1,043 Posts
Joined Jan 2007
Oneill5491Nov 05, 2025 08:29 PM
1,043 Posts
Quote from harley48 :
So the 3500mWh cells have a 1.5v working capacity of ~1400mAh.
Correct me if I'm wrong, but that sounds like it would be less than an alkaline AA battery
Nov 05, 2025 08:43 PM
94 Posts
Joined Feb 2019
FaithfulCorn509Nov 05, 2025 08:43 PM
94 Posts
Quote from Oneill5491 :
Correct me if I'm wrong, but that sounds like it would be less than an alkaline AA battery
Most rechargeables haves lower capacity than alkaline. There are a few things going on, though. One is usable capacity depends on current discharge rate, higher discharge rate tends to lead to less usable capacity for alkaline than say Nimh. Also, there's voltage drop, alkaline starts at 1.5v and goes down to 0.9ish over the course of being discharged, so if your device needs more voltage to work, it'll die while the alkaline still has plenty of " life" left. Nimh will quickly go to 1.2v and stay there, lithium which are stepped down to 1.5v by internal circuitry will stay close to 1.5 until dead. That said, these particular cells seem pretty anemic.
Nov 05, 2025 08:55 PM
94 Posts
Joined Feb 2019
FaithfulCorn509Nov 05, 2025 08:55 PM
94 Posts
Quote from FaithfulCorn509 :
Most rechargeables haves lower capacity than alkaline. There are a few things going on, though. One is usable capacity depends on current discharge rate, higher discharge rate tends to lead to less usable capacity for alkaline than say Nimh. Also, there's voltage drop, alkaline starts at 1.5v and goes down to 0.9ish over the course of being discharged, so if your device needs more voltage to work, it'll die while the alkaline still has plenty of " life" left. Nimh will quickly go to 1.2v and stay there, lithium which are stepped down to 1.5v by internal circuitry will stay close to 1.5 until dead. That said, these particular cells seem pretty anemic.
Also, afaik there's no "eneloop" of lithium aa/aaa cells, they're all from manufacturers of varying track records who may overstate capacity and cut corners on safety. Also, the technology is in its infancy, so even cells from somewhat reputable brands like EBL tend to lose a ton of capacity after a few tens of use cycles (according to NYT wirecutter tests).
Nov 06, 2025 01:35 AM
285 Posts
Joined Jan 2022
obijeewhyenNov 06, 2025 01:35 AM
285 Posts
I have some of the Tenevolts lithium rechargeables which are pretty good, are these comparable to those?
Nov 06, 2025 03:28 AM
1,030 Posts
Joined Jan 2014
GrassmudhorseNov 06, 2025 03:28 AM
1,030 Posts
On aliexpress you can get smartoools and soshine with very similar stats for only $1 a batt
1
Nov 06, 2025 04:45 AM
1,127 Posts
Joined May 2018
Oil_BurnerNov 06, 2025 04:45 AM
1,127 Posts
What is Micro-USB ? Is that thing of the past ?
2
Nov 06, 2025 06:03 AM
680 Posts
Joined Dec 2015
henareNov 06, 2025 06:03 AM
680 Posts
Quote from Oil_Burner :
What is Micro-USB ? Is that thing of the past ?
yup. Abe Lincoln used one to power his beard.
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Nov 06, 2025 04:03 PM
914 Posts
Joined Oct 2012
logantannerNov 06, 2025 04:03 PM
914 Posts
Even as cheap as I am, I can't tolerate micro-USB anymore.
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