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expiredGimmeYoTots posted Jul 17, 2023 03:55 PM
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expiredGimmeYoTots posted Jul 17, 2023 03:55 PM

BONAI 6F22 9 Volt Li-ion Rechargeable Battery(4 Pack w/ 2 bay charger) $17.47 w/ Sub and Save

$18

$23

21% off
Amazon
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A 2 pack of Duracell 9v batteries is selling for about $9, or $7.62 w/ 15% sub & save discount. This 4 pack includes the special 9v charger for Li-ion 9v batts, and there are 4 batteries, for $17.47. Seems like a fairly good deal to me.

About this item
  • 600mAh Li-ion (4 Pack)Rchargeable 9v batteries with Charger(9v,2Bay).
  • 9V Battery Charger: Suitable for any brand of 9V Rechargeable batteries, can charge 1 or 2 batteries at a time.
  • 9 Volt Rechargeable battery: No memory effect & Low-self discharge,holding capacity effectively,not have to change every day.
  • Bonai 9V batteries rechargeable are perfect for smoke alarms, metal detector, professional audio, toys, guitar, medical devices and more.
  • BONAI - We are a professional battery manufacturer with 10 years of experience and we have been doing our best to meet customer needs. --【Support After Sales】If you have any questions,submit a claim via email,we will reply you within 24 hours.

https://www.amazon.com/BONAI-Rech...B0746FV8BF
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Community Notes
About the Poster
A 2 pack of Duracell 9v batteries is selling for about $9, or $7.62 w/ 15% sub & save discount. This 4 pack includes the special 9v charger for Li-ion 9v batts, and there are 4 batteries, for $17.47. Seems like a fairly good deal to me.

About this item
  • 600mAh Li-ion (4 Pack)Rchargeable 9v batteries with Charger(9v,2Bay).
  • 9V Battery Charger: Suitable for any brand of 9V Rechargeable batteries, can charge 1 or 2 batteries at a time.
  • 9 Volt Rechargeable battery: No memory effect & Low-self discharge,holding capacity effectively,not have to change every day.
  • Bonai 9V batteries rechargeable are perfect for smoke alarms, metal detector, professional audio, toys, guitar, medical devices and more.
  • BONAI - We are a professional battery manufacturer with 10 years of experience and we have been doing our best to meet customer needs. --【Support After Sales】If you have any questions,submit a claim via email,we will reply you within 24 hours.

https://www.amazon.com/BONAI-Rech...B0746FV8BF

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Jul 17, 2023 04:59 PM
1,747 Posts
Joined Feb 2006
tsglennJul 17, 2023 04:59 PM
1,747 Posts
$17.47 is only with 5 S&S discount (5%). There is no <5 S&S discount.
Jul 17, 2023 05:16 PM
9,377 Posts
Joined Aug 2018
TodayOnlyJul 17, 2023 05:16 PM
9,377 Posts

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

Type Price Date
Current $22.99 Jan 10, 2023
Highest * $32.97 Apr 08, 2020
Lowest * $19.64 Dec 22, 2019
Average + $22.54 -
1
1
Jul 17, 2023 05:23 PM
2,911 Posts
Joined Sep 2008
ChiefAlchemistJul 17, 2023 05:23 PM
2,911 Posts
Who makes a rechargeable battery system that covers all the standard sizes with my just one or two chargers?

On the surface this seems like a solid deal. Thanks! But I do wish the charge also did AAA and AA as well. Just me?
Jul 17, 2023 05:55 PM
521 Posts
Joined Apr 2009
jdsmn21Jul 17, 2023 05:55 PM
521 Posts

Our community has rated this post as helpful. If you agree, why not thank jdsmn21

Fully charged, they are around 8.3 volts. Most devices, that would trigger the 'low voltage' alert....ie: chirping smoke detector
6
1
Jul 17, 2023 06:01 PM
2,019 Posts
Joined Dec 2008
crakarjaxJul 17, 2023 06:01 PM
2,019 Posts

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I think I'd rather get 1200mah batteries for not much more
1
Jul 17, 2023 06:11 PM
27 Posts
Joined Mar 2022
WeinerWarlockJul 17, 2023 06:11 PM
27 Posts
Quote from ChiefAlchemist :
Who makes a rechargeable battery system that covers all the standard sizes with my just one or two chargers?

On the surface this seems like a solid deal. Thanks! But I do wish the charge also did AAA and AA as well. Just me?
You can find Eneloop batteries and adapters for most cylindrical battery sizes. I don't think they make 9V batteries.
Jul 17, 2023 06:11 PM
2,740 Posts
Joined Apr 2014
ScoreracingJul 17, 2023 06:11 PM
2,740 Posts
What in the who 'BONAI'?!

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Jul 17, 2023 06:25 PM
35 Posts
Joined Nov 2014
rizzaJul 17, 2023 06:25 PM
35 Posts
For smoke detectors, I think I'll stick with the Amazon 9v non-rechargeable, don't have to replace them very often
Jul 17, 2023 06:39 PM
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Joined Sep 2008

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Jul 17, 2023 07:06 PM
9,377 Posts
Joined Aug 2018
TodayOnlyJul 17, 2023 07:06 PM
9,377 Posts
the first alert zwave smoke co2 detectors start chirping between 75-80% battery left. they use the AA batteries. been putting the replaced batteries in the flicker candles to use them up.
Jul 17, 2023 08:07 PM
76 Posts
Joined Feb 2011
sharpiefineJul 17, 2023 08:07 PM
76 Posts
Quote from ChiefAlchemist :
fwiw, afaik the recommendation is to replace smoke alarm batteries twice a year, and thus why rechargeable make sense.
I think the recommendation is to test the smoke detector batteries every six months, not necessarily replace them.
Jul 17, 2023 08:17 PM
1,289 Posts
Joined May 2013
TechManDadJul 17, 2023 08:17 PM
1,289 Posts
Quote from ChiefAlchemist :
Who makes a rechargeable battery system that covers all the standard sizes with my just one or two chargers?

On the surface this seems like a solid deal. Thanks! But I do wish the charge also did AAA and AA as well. Just me?
Try something like this:

Rechargeable Battery Charger AA AAA, 2 in 1 Universal Battery Charger for 18650 C D 9V 26650, Household Li-ion Nimh Battery Charger with Smart Display, 6 Bay(2 9V Battery Bay and 4 Universal Bay) https://a.co/d/avmaMEs
1
Jul 17, 2023 08:28 PM
2,912 Posts
Joined Mar 2018
ThinksTooMuchJul 17, 2023 08:28 PM
2,912 Posts
Quote from ChiefAlchemist :
Who makes a rechargeable battery system that covers all the standard sizes with my just one or two chargers?

On the surface this seems like a solid deal. Thanks! But I do wish the charge also did AAA and AA as well. Just me?
There's these [amazon.com] - although they use microUSB, you at least don't have to worry about finding a charger that can handle them.
Jul 17, 2023 08:29 PM
2,912 Posts
Joined Mar 2018
ThinksTooMuchJul 17, 2023 08:29 PM
2,912 Posts
Quote from TechManDad :
Try something like this:

Rechargeable Battery Charger AA AAA, 2 in 1 Universal Battery Charger for 18650 C D 9V 26650, Household Li-ion Nimh Battery Charger with Smart Display, 6 Bay(2 9V Battery Bay and 4 Universal Bay) https://a.co/d/avmaMEs
"Currently unavailable."

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Jul 17, 2023 08:39 PM
2,912 Posts
Joined Mar 2018
ThinksTooMuchJul 17, 2023 08:39 PM
2,912 Posts
Quote from sharpiefine :
I think the recommendation is to test the smoke detector batteries every six months, not necessarily replace them.
Mine get tested more frequently: whenever my one kid attempts to cook there's a 50-50 chance they'll go off...
3

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