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frontpageSkillful_Pickle | Staff posted Today 02:43 PM
frontpageSkillful_Pickle | Staff posted Today 02:43 PM

8-pk 3500mWh HW Rechargeable AA Batteries w/ Charger

w/ Subscribe & Save

$13

$30

56% off
Amazon
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TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has 8-pk 3500mWh HW Rechargeable AA Batteries w/ Charger on sale for $23.99 - $9.60 (apply promo code M8QY9IRX at checkout) - $1.20 (5% Subscribe & Save discount) = $13.19. Shipping is free with Prime or on $35+ orders.
  • 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. You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.
Thanks to staff member Skillful_Pickle for finding this deal.

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Written by megakimcheelove | Staff

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TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has 8-pk 3500mWh HW Rechargeable AA Batteries w/ Charger on sale for $23.99 - $9.60 (apply promo code M8QY9IRX at checkout) - $1.20 (5% Subscribe & Save discount) = $13.19. Shipping is free with Prime or on $35+ orders.
  • 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. You have the flexibility to manage your Subscribe & Save subscription at any time after your order ships. View Subscribe & Save filler items and our current Subscribe & Save Frontpage deals to unlock up to extra 15% savings when you have 5 or more items in your current monthly subscription.
Thanks to staff member Skillful_Pickle for finding this deal.

Editor's Notes

Written by megakimcheelove | Staff

Original Post

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harley48
393 Posts
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Bought without charger a month ago (I have 3 others that work for this kind of cell.)

Typical results:

1880mAh @0.5A-81% of claimed capacity
1700mAh @1.0A-73%of claimed capacity
1575mAh @1.5A-68%of claimed capacity
1370mAh @2.0A-59%of claimed capacity

THIS MODEL DOES HAVE A VOLTAGE STEP DOWN.
It drops to ~1.1v for around 480mAh.
This allows SOME devices to notify the user that the voltage has dropped instead of cutting off abruptly like most of these kind of batteries.
MUCH longer time spent at 1.1v, at the expense of less time spent at 1.5v.
Voltage sensitive devices will see less capacity.

If you read the 3* reviews you'll see some people are getting what appear to be defective batteries. All mine work.....so far. Long term reliability and self-discharge are unknown.

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Today 03:28 PM
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zyfToday 03:28 PM
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reliable brand??
Today 03:43 PM
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harley48Today 03:43 PM
393 Posts

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

Bought without charger a month ago (I have 3 others that work for this kind of cell.)

Typical results:

1880mAh @0.5A-81% of claimed capacity
1700mAh @1.0A-73%of claimed capacity
1575mAh @1.5A-68%of claimed capacity
1370mAh @2.0A-59%of claimed capacity

THIS MODEL DOES HAVE A VOLTAGE STEP DOWN.
It drops to ~1.1v for around 480mAh.
This allows SOME devices to notify the user that the voltage has dropped instead of cutting off abruptly like most of these kind of batteries.
MUCH longer time spent at 1.1v, at the expense of less time spent at 1.5v.
Voltage sensitive devices will see less capacity.

If you read the 3* reviews you'll see some people are getting what appear to be defective batteries. All mine work.....so far. Long term reliability and self-discharge are unknown.
Last edited by harley48 October 23, 2025 at 08:47 AM.
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Today 04:07 PM
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PureseedToday 04:07 PM
61 Posts
$13.19 with S&S. At this price I'll try them out.
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Today 04:20 PM
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ScoobieSnax
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Today 04:20 PM
1,561 Posts
Quote from harley48 :
Bought without charger a month ago (I have 3 others that work for this kind of cell.)

Typical results:

1880mAh @0.5A-81% of claimed capacity
1700mAh @1.0A-73%of claimed capacity
1575mAh @1.5A-68%of claimed capacity
1370mAh @2.0A-59%of claimed capacity

THIS MODEL DOES HAVE A VOLTAGE STEP DOWN.
It drops to ~1.1v for around 480mAh.
This allows SOME devices to notify the user that the voltage has dropped instead of cutting off abruptly like most of these kind of batteries.
MUCH longer time spent at 1.1v, at the expense of less time spent at 1.5v.
Voltage sensitive devices will see less capacity.

If you read the 3* reviews you'll see some people are getting what appear to be defective batteries. All mine work.....so far. Long term reliability and self-discharge are unknown.
I am curious as to whether the included charger is usb c compatible. From one of the negative reviews, it seems to show that his was micro-usb which is a deal breaker for me unfortunately.
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Today 04:22 PM
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jongasse
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Today 04:22 PM
1,680 Posts
Quote from harley48 :
Bought without charger a month ago (I have 3 others that work for this kind of cell.)<br />
<br />
Typical results: <br />
<br />
1880mAh @0.5A-81% of claimed capacity<br />
1700mAh @1.0A-73%of claimed capacity<br />
1575mAh @1.5A-68%of claimed capacity<br />
1370mAh @2.0A-59%of claimed capacity<br />
<br />
THIS MODEL DOES HAVE A VOLTAGE STEP DOWN. <br />
It drops to ~1.1v for around 480mAh. <br />
This allows SOME devices to notify the user that the voltage has dropped instead of cutting off abruptly like most of these kind of batteries. <br />
MUCH longer time spent at 1.1v, at the expense of less time spent at 1.5v. <br />
Voltage sensitive devices will see less capacity.<br />
<br />
If you read the 3* reviews you'll see some people are getting what appear to be defective batteries. All mine work.....so far. Long term reliability and self-discharge are unknown.
Thank You for writing this down - can you either post or DM the other models you have found useful?

The 1.1v plateau feels weird especially when it's trading off the time spent at 1.5v which is the whole point of buying these.
Today 06:36 PM
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famewolfToday 06:36 PM
6,099 Posts
Quote from ScoobieSnax :
I am curious as to whether the included charger is usb c compatible. From one of the negative reviews, it seems to show that his was micro-usb which is a deal breaker for me unfortunately.

Get a $1 adapter. This is a non-issue.
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ScoobieSnax
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Today 06:42 PM
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Quote from famewolf :


Get a $1 adapter. This is a non-issue.
Maybe to you. I prefer not to use adapters and just plug it into one of my many usb c chargers. Also, its not a deal if i have to buy an adapter when I can just buy a similar set that IS usb c for $5 more.
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Today 06:46 PM
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famewolfToday 06:46 PM
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Quote from ScoobieSnax :
Maybe to you. I prefer not to use adapters and just plug it into one of my many usb c chargers. Also, its not a deal if i have to buy an adapter when I can just buy a similar set that IS usb c for $5 more.

You are plugging it into a usb-a at the wall outlet (or at least usb-a speeed @ 5v 2a). It's not going to charge any faster with the usb-c and last I checked that's still $4 cheaper than the one you mentioned. This is slickdeals not almostslickdeals.

https://www.amazon.com/Adapter-Co...07MV5NFCH/ That adapter will let you plug it into your usb-c chargers, power bank etc. The usb-c version of this charger is $28 (for the same manufacturer). https://www.amazon.com/HW-3500mWh...B0DHN89375
Last edited by famewolf October 23, 2025 at 11:51 AM.
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Today 06:49 PM
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ScoobieSnax
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Today 06:49 PM
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Quote from famewolf :


You are plugging it into a usb-a at the wall outlet (or at least usb-a speeed @ 5v 2a). It's not going to charge any faster with the usb-c and last I checked that's still $4 cheaper than the one you mentioned. This is slickdeals not almostslickdeals.

https://www.amazon.com/Adapter-Co...07MV5NFCH/ That adapter will let you plug it into your usb-c chargers, power bank etc.
What part of not wanting to use adapters is hard to understand? I'm glad you don't care, but I don't care to spend an additional $5 (NOT $1) for 4 usb c to micro usb adapters that I won't ever use and simply, wouldn't want to. I'd rather use the $5 on getting usb c version of similar sets which can be found all over Amazon for $20 and even found one for just $1 more @ $15.99 and another for $5.50 less @ $9.49 without a "coupon".

$19.99:

https://a.co/d/7IZdpet

$15.99:

https://a.co/d/3pZl9Zu

$9.49:

https://slickdeals.net/share/android_app/t/18727765?referrerid=15823423
Today 07:08 PM
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harley48Today 07:08 PM
393 Posts

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

Quote from jongasse :
Thank You for writing this down - can you either post or DM the other models you have found useful?

The 1.1v plateau feels weird especially when it's trading off the time spent at 1.5v which is the whole point of buying these.
My 'original' foray into this chemistry was Tenavolt.. They aren't the best, but they are 'solid' and I can vouch for their reliability in this case since I've had them since 2019 being used fairly often. I don't use them for high power devices.
SinceHoly 3500mWh are decent getting ~85-90% of claimed at 0.5A. Short time used. No idea of long term reliability.
Dracutum 3000mWh.- on a percentage of claimed capacity this is one of the best ones I have reaching 90-95% at 0.5A draw. They sustain 70-73% at 2.5A which is pretty decent.
The Dracutum ALSO HAVE VOLTAGE DROP, to 1.1v. BUT, they only do that for ~50mAh, so there is a BRIEF notification window of low voltage, but little loss of working capacity. This is the first brand that I've owned that does this.

ALL of them were bought on some kind of special, usually ~ $2-2.50/cell. I would not buy these for $4-5/cell but I really don't NEED any of these, NiMh are fine for me most of the time.
I don't have a door lock or critter cam. Those things have an entirely different demand and usually DON'T do well on NiMh, or alkaline. So those folks end up with lithium primary like $2-2.50/battery for disposable.

For excellent rechargeable lithium AA, and willing to pay the price, look at the Xtar brand.

(Note-Cicnod and JWWYJ are both not too good. Imren are OK but only if bought cheaply.
If you are one of those people that HAS to have USB-direct charging, you WILL give up some capacity fo it. Not much room in that tiny can for chemicals AND electronics). I have not found any brand in AAA size that is even decent except Tenavolt. Just too tiny and the manufacturers routinely mess this up by making them USB-direct charge. Stupid. .
Last edited by harley48 October 23, 2025 at 12:11 PM.
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Today 07:18 PM
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harley48Today 07:18 PM
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Quote from ScoobieSnax :
Maybe to you. I prefer not to use adapters and just plug it into one of my many usb c chargers. Also, its not a deal if i have to buy an adapter when I can just buy a similar set that IS usb c for $5 more.
To each their own, but you don't have a micro-USB cable laying around? JEEZ they WERE the standard not that long ago. I've got hoards of them.
If you don't want to, fine.

FWIW I've got the means to test the resistance of USB cables. MOST of the cables of any sort that come with cheap devices have pretty high resistance. Doesn't matter if it's micro or C. C is no panacea except for being more user friendly...generally. For stuff that REALLY NEEDS C, and at HIGH amps, it's a different story. For that you NEED a really good cable.

NONE of these little chargers NEED high amps. The batteries couldn't take it anyway. Most are limited to 0.5A/battery, otherwise they'd get HOT. Charging control ISN'T the 'charger', it's INSIDE the battery. The 'charger' is simply 5v USB pass-through.
Last edited by harley48 October 23, 2025 at 12:21 PM.
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Today 07:23 PM
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ScoobieSnax
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Today 07:23 PM
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Quote from harley48 :
To each their own, but you don't have a micro-USB cable laying around? JEEZ they WERE the standard not that long ago. I've got hoards of them.
If you don't want to, fine.

FWIW I've got the means to test the resistance of USB cables. MOST of the cables of any sort that come with cheap devices have pretty high resistance. Doesn't matter if it's micro or C. C is no panacea except for being more user friendly...generally. For stuff that REALLY NEEDS C, and at HIGH amps, it's a different story. For that you NEED a really good cable.

NONE of these little chargers NEED high amps. The batteries couldn't take it anyway. Most are limited to 0.5A/battery, otherwise they'd get HOT. Charging control ISN'T the 'charger', it's INSIDE the battery. The 'charger' is simply 5v USB pass-through.
Never once did I ever mention amperage.

It's so very, very simple. I choose to not use micro usb on any new device I buy. It's not worth it to me to save literally $0 for the privilege of having to pull out an old cable to only use on this one device. Also, I'm not telling anyone not to buy this. Just expressed that it's a deal breaker for me and don't understand why that's an issue, to now, 2 of you.
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Today 07:29 PM
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harley48Today 07:29 PM
393 Posts
Quote from ScoobieSnax :
Never once did I ever mention amperage.

It's so very, very simple. I choose to not use micro usb on any new device I buy. It's not worth it to me to save literally $0 to have the pleasure of having to pull out an old cable to only use on this one device.Also, I'm not telling anyone not to buy this. Just expressed that it's a deal breaker for me and don't understand why that's an issue, to now, 2 of you.
I do get that. Preference for simplicity is fine. I kind of devolve into complexity, and am occasionally annoyed by it. Such is the side effects of curiosity sometimes.
My micro-USB is attached to the charger that I have to get out to charge the battery anyway.
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