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.
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Edit: 2400mAh x 1.5V = 3600mWh.
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.
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And, yeah, the life of each charge seems pretty short. Just keep your expectations low.
apples to oranges.
this is for people need 1.5V (like door locks for example), where 1.2V cannot work well.
But heres a quick explanation:
1.5V Lithium-ion (Li-ion) batteries achieve their voltage by incorporating a buck converter (step-down circuit) and a protection chip, which reduce the internal lithium cell's native (or ) down to a constant, regulated output. This internal circuitry allows the battery to mimic the voltage profile of an alkaline cell, holding a steady 1.5V until it is almost completely discharged.
https://a.co/d/0hKOQ9Mn
Best AA "Lithium" Rechargeable Battery?
https://www.youtube.com/watch?v=CzZrB97
https://www.youtube.com/watch?v=RC3RlKy
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Reading is fundamental...Its all there on the page.
1.2V is a different use case than these 1.5V batteries. Our doorbell camera requires 1.5V batteries; it will work for a short time with 1.2V, but even with fresh ones, it says it's time to replace the batteries due to the lower voltage. They don't seem to last as long as rechargable lithium ions.
Which high-drain devices, are working well for you?
A 1.2 volt NimH battery that stays at 1.2 volts for quite a while and then drops to 1.15 volts and the device triggers its 'low battery alarm' does not mean there's anything necessarily wrong with the battery - most devices set the warning based on 1.5 volt (when fresh) Alkaline batteries, not rechargeables. Alkalines are dead at 1.15 volts. Lithium batteries start at a higher voltage - the Energizer Lithium AAs are at 1.7 volts out of the box. It takes them a LONG time at moderate current drain to reach 1.15 volts.
What Lithiums excel at (aside from longer life and FAR fewer leaky batteries that ruin your gear the way alkalines do) is short term high current draw that just kills alkaline and NiMH batteries. Professional sound crews who can't afford to deal with that 'low battery alert after 25 minutes of use' nonsense use Energizer lithium batteries exclusively.
Lastly, people praise the eneloop batteries highly. I have a dozen here and after about a year of intermittent use/charging, they are AT BEST at half capacity, and their self-discharge rate when on the shelf is PATHETIC - 90 days and they're worthless without being charged again without any actual use. Your mileage may vary.
https://slickdeals.net/f/18736096
Posted this deal last year. Been using them since mid October with great results. No brainer at less than $10.
There are a few use cases for 1.5V rechargeables. So I guess I'll get a set and play with it.
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