TIGER HEAD HI WATT BATTERY HK CO LTD via Amazon has
4-Pack HW 1.5V 1300mWh AAA USB-C Rechargeable Lithium Batteries w/ 4-in-1 Cable on sale for $13.99 - $4.90 (35%) when you apply promo code
JSIAXWXT at checkout =
$9.09.
Shipping is free with Prime or on $35+ orders.
Thanks to Staff Member
Red_Liz for sharing this deal.
Note: For Prime members, the final price is slightly lower at
$8.64. 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:
- Charge 4 batteries simultaneously with the included USB-C cable. Convenient charging via laptop, power bank, wall charger, or car charger.
- 1300mWh AAA rechargeable lithium batteries deliver longer runtime and stable power compared to standard alkaline batteries.
- 1600+ Recharge Cycles
- Advanced technology ensures a steady 1.5V voltage from full to empty, providing consistent performance for high-drain devices.
- Fully charges in 1.2 hours with built-in protections: overcharge, over-discharge, over-voltage, over-current, short circuit, and overheating.
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I've tested a LOT of 1.5v AAA. Most are ~300-400mAh. The BEST, Tenavolt are ~675.
The worst, ALL of them with USB charging are 250-300. That USB port takes up precious room in a very little can.
I fully expect these to be pretty lame.
The HW AA I test WITHOUT a port were ~80% of claimed capacity.
Mine pretty much end up in remote controls. They work well, until they don't.
I ordered the AA for my blink camera that requires 1.5V. Using regular rechargeables gives a 'low battery' even at 100%.
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A few of them now step down, usually to about 1.1v, hang in there for awhile (brands vary), then cut off suddenly.
It can be useful for some applications. For others that NEED the WHOLE 1.5v, it ends up being the loss of some capacity.
Unfortunately, except for Xtar, they do NOT seem to document this or provide specifics.
2 brands I have personally tested had this feature-nothing in the specs, nothing in the reviews.
HW 1.5v AA 3500mWh/2333mAh - Dropped to 1.1v for about 480mAh. (this could be seen as a loss of ~ 25% of the capacity)
Dracutum 3000mWh/2000mAh 1.5vAA - Dropped to 1.1v for about 50mAh
- Big difference between the 2 brands.
Additional info: Dracutum had ~90% of claimed capacity, HW had ~80% as found in mAh via discharge testing.
This way they get to put a number on the package that's 1.5 times the number on the packaging of competing products!
It IS annoying and confusing for the consumers.
Since I haven't used rechargeable in them I'm not sure what they would do. NiMh might actually do fine, though it would show 1/2 full soon after installation, but probably stay that way for a long time.
Having said that, if you want to use rechargeable AAA Li I'd suggest Tenavolt. Of the AAA I've tested they were the only decent ones and the Tenavolt AA I've got have (so far) been fine over 4 years of use.
The Tenavolt will work, and then suddenly just be 'gone'. Not sure if you would get any notification. Might depend on the year/generation made. Mine are ~4-5 years old.
This way they get to put a number on the package that's 1.5 times the number on the packaging of competing products!
Since I haven't used rechargeable in them I'm not sure what they would do. NiMh might actually do fine, though it would show 1/2 full soon after installation, but probably stay that way for a long time.
Having said that, if you want to use rechargeable AAA Li I'd suggest Tenavolt. Of the AAA I've tested they were the only decent ones and the Tenavolt AA I've got have (so far) been fine over 4 years of use.
The Tenavolt will work, and then suddenly just be 'gone'. Not sure if you would get any notification. Might depend on the year/generation made. Mine are ~4-5 years old.
I'm pretty deep into the saltwater coral reef aquarium hobby and currently have around 20 Govee leak detectors deployed (likely more, I'd have to double-check). I hear you loud and clear, they are absolute grief savers. I honestly can't recommend them enough to the Slickdeals community. They go on sale fairly often and are invaluable. Whether that be under sinks, in AC and water-heater pans, behind tubs, under dishwashers, and near fridges. (I don't even want to talk about how many aquarium leak related issues they've detected...) When it comes to leaks, detection time is everything! But man, that low battery alert... Come on Govee, let us change the low-battery local alert notification and phone notification to be something different than an actual leak!!!
Anyways, up to now, I've been using primary lithium batteries too (Energizer from Sam's Club), and to be fair, they do last a couple of years (and don't leak). Still, if there's a reliable rechargeable option, I'd love to move in that direction.
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So Lithium ion batteries' output voltage varies more than alkaline and NiMH batteries'?
Say you have 2 batteries:
A NiMH 1700mAh @ 1.2V
A lithium 700mAh @ 3.7V
Which one is better? A consumer may think that 1700mAh is much bigger and think that's better, but in reality,
1700mAh @ 1.2V = 2040mWh
700mAh @ 3.7V = 2590mWh
The 700mAh lithium @ 3.7V has more energy, because it's delivering the 700mAh at ~3x the voltage of the other one. mWh lets you compare the energy of different types of battery, whereas mAh is only useful for batteries of the same type/voltage.
To relate back to this, calling it a 1700mAh battery would be incorrect, as inside the battery is a 700mAh lithium battery. It's been voltage converted to act like a 1.5V battery, but not a true 1700mAh battery.
So Lithium ion batteries' output voltage varies more than alkaline and NiMH batteries'?
I've got a Prius. It's got a HUGE NiMh battery. It's good for ~2 miles if I am extremely gentle, on the flat, and never exceed 20mph.
A lithium of the same size would actually power a car normally for awhile.
Energy density differences. That's why mWh are used, to take in voltage differences.
I've got a Prius. It's got a HUGE NiMh battery. It's good for ~2 miles if I am extremely gentle, on the flat, and never exceed 20mph.
A lithium of the same size would actually power a car normally for awhile.
Energy density differences. That's why mWh are used, to take in voltage differences.
Pretty sure the newer Prii use Lithium! Interesting to learn more about the difference, though! Thank you!
1. How GOOD is the battery? You CAN get NiMh that are of excellent quality, reliability, and proven history for a similar price. There are also 'lesser' NiMh, and crap NiMh. You need to do a bit of REAL homework. Slickdeals and Amazon are not real reliable indicators of quality unless you sift the info carefully and KNOW what you are looking for.
This applies even more to 1.5v lithium, except that there is essentially NO HISTORY or RELIABILITY information, it being a new product. Performance + capacity is also difficulty to determine. In that regard Slickdeals and Amazon are even worse. So, not easy.
2. Voltage and current requirements. MOST devices are OK with the 1.2v of NiMh. It hold that voltage for a long time before dropping so works OK.
Most devices don't NEED high current, so NiMh is OK.
BUT, some devices NEED higher voltage and/or higher current, or at least work better. For those, 1.5v lithium can well work better, IF it meets decent requirements outlined in #1. This can be a challenge for someone not knowing much about these requirements.
Usually it becomes, buy it, try it > be happy, or be disappointed.
I see LOTS of 'reviews' from disappointed people that clearly show they have no clue what they are doing, like putting 1.5v lithium in solar lights. They won't charge. Putting them in some electronic devices and finding they put out interference....they do. That doesn't matter to things like lights or small motors.
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1. How GOOD is the battery? You CAN get NiMh that are of excellent quality, reliability, and proven history for a similar price. There are also 'lesser' NiMh, and crap NiMh. You need to do a bit of REAL homework. Slickdeals and Amazon are not real reliable indicators of quality unless you sift the info carefully and KNOW what you are looking for.
This applies even more to 1.5v lithium, except that there is essentially NO HISTORY or RELIABILITY information, it being a new product. Performance + capacity is also difficulty to determine. In that regard Slickdeals and Amazon are even worse. So, not easy.
2. Voltage and current requirements. MOST devices are OK with the 1.2v of NiMh. It hold that voltage for a long time before dropping so works OK.
Most devices don't NEED high current, so NiMh is OK.
BUT, some devices NEED higher voltage and/or higher current, or at least work better. For those, 1.5v lithium can well work better, IF it meets decent requirements outlined in #1. This can be a challenge for someone not knowing much about these requirements.
Usually it becomes, buy it, try it > be happy, or be disappointed.
I see LOTS of 'reviews' from disappointed people that clearly show they have no clue what they are doing, like putting 1.5v lithium in solar lights. They won't charge. Putting them in some electronic devices and finding they put out interference....they do. That doesn't matter to things like lights or small motors.
"1.5 V lithium AA," manufacturers add internal DC‑DC converter and protection circuits.
Those internal circuits can switch at high frequency and, if poorly filtered or shielded, may generate electrical noise that could couple into sensitive circuits nearby, whereas a plain NiMH cell is essentially just an electrochemical voltage source with no active electronics.
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