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#4620198 - 12/31/17 11:47 PM rechargeable 9 volt batteries
WhyMe Offline


Registered: 12/18/12
Posts: 513
Loc: Washington for now
i have way too many things that still require a 9 volt battery. they are not cheap either. i was thinking of getting some rechargable ones . i read they are not true 9 volt but 8.4 or 7.2 . also they don't last long

anyone have 9 volt rechargable and share your experience with them?

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#4620202 - 12/31/17 11:59 PM Re: rechargeable 9 volt batteries [Re: WhyMe]
Superflan Offline


Registered: 04/28/15
Posts: 357
Loc: Reunion Island
I have some that are 8.4V spec.

I use them only for motor or lighting application. For the rest, the less voltage and the auto discharge rate is not advantageous. Alkaline are the way.

Same with 1.2V rechargeable (1.5V conventional) : they donít work well in some electronic appliances. I used them only for lighting, motor, digital cameras (they seems built for this). I even use Alkaline in my toys drones romote controllers
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#4620205 - 01/01/18 12:10 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
Wolf359 Offline


Registered: 04/27/12
Posts: 4750
Loc: MA
What things are you using that require 9v? I prefer regular lithium batteries for things like smoke detectors. They can last 10 years. I used to pick them up on eBay for around $4-$6 each. Or I just grab a bunch of regular 9v alkaline on eBay, usually when you get a dozen or more at a time, they're usually in the $1+ range each, at least it's cheaper than the store.

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#4620211 - 01/01/18 12:33 AM Re: rechargeable 9 volt batteries [Re: Wolf359]
WhyMe Offline


Registered: 12/18/12
Posts: 513
Loc: Washington for now
Originally Posted By: Wolf359
What things are you using that require 9v? I prefer regular lithium batteries for things like smoke detectors. They can last 10 years. I used to pick them up on eBay for around $4-$6 each. Or I just grab a bunch of regular 9v alkaline on eBay, usually when you get a dozen or more at a time, they're usually in the $1+ range each, at least it's cheaper than the store.


Shot timer, chrono, ear protection . i am just tires of buying batts for them . the ear muffs eat batteries

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#4620215 - 01/01/18 12:44 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
901Memphis Offline


Registered: 08/14/10
Posts: 12893
Loc: Northern Kentucky
The alkalines are affordable in bulk.

AmazonBasics 9 Volt Everyday Alkaline Batteries (8-Pack) https://www.amazon.com/dp/B00MH4QM1S


https://www.batteryjunction.com/mn-1604.html
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#4620229 - 01/01/18 01:03 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: WhyMe
i am just tires of buying batts for them . the ear muffs eat batteries


My shooting muffs don't use any batteries! grin crackmeup cheers
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#4620274 - 01/01/18 04:30 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
Shannow Online   content


Registered: 12/12/02
Posts: 39858
Loc: 'Stralia
Mine don't either...not much interested in conversations while pulling the trigger.

I've got a REZAP charger that will charge regular Alkalines, including 9V...the 6V and 9V are a "pile" in that they are a number of cells in series, so the smarts in the charger don't work as well when charging them..get a few rounds out of them (unless they are Duracel...duracel batteries pop when recharged, just about any other gets me 4-5 goes at it before they simply fail...then leak in the recycling bottle)

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#4620290 - 01/01/18 06:16 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
Brad_C Offline


Registered: 07/27/12
Posts: 617
Loc: Perth, Western Australia
There are some nice 9.6v nimh lsd batteries, but I've recently changed to 2cell lithium ion. Much lower voltage off the bat, but holds up with a flatter discharge curve than alkaline so in the end the results are pretty good. Nearly 3 times the capacity of the nimh and about the same as a reasonable alkaline. I'm impressed, and I'm a pretty hard marker on batteries.

It's a bit of a search to find quality units with verifiable data sheets and local support though.

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#4620307 - 01/01/18 07:12 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
Quattro Pete Offline


Registered: 10/30/02
Posts: 35856
Loc: Great Lakes
Rechargeable 9V cells aren't cheap... http://a.co/jeOlD7D

And then you have to buy a charger.
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#4620327 - 01/01/18 07:51 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
vwmaniaman Offline


Registered: 04/18/13
Posts: 129
Loc: Kevil,Ky
Have you tried DX.com. Good stuf and bad stuff. Just don't be in a big hurry. They come from China usually. Be sure to read reviews
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#4620345 - 01/01/18 08:22 AM Re: rechargeable 9 volt batteries [Re: WhyMe]
eljefino Offline


Registered: 06/15/03
Posts: 32635
Loc: ME
I get my 9Vs from Dollar Tree. Run them in smoke detectors for a year (they lose 0.2 volts doing that) and then throw them in the junk drawer for reuse in voltmeters etc.

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#4621080 - 01/01/18 07:38 PM Re: rechargeable 9 volt batteries [Re: vwmaniaman]
Wolf359 Offline


Registered: 04/27/12
Posts: 4750
Loc: MA
Originally Posted By: vwmaniaman
Have you tried DX.com. Good stuff and bad stuff. Just don't be in a big hurry. They come from China usually. Be sure to read reviews


I stopped buying from them a long time ago. Their batteries are usually fake. I just got a charger that will run down the battery and charge it up to tell you the mah rating of the battery. I've gotten some real 18650 batteries from Amazon that meet their 2300mah ratings and I found a few old ones that claimed 2000-3000 but they didn't even crack 1000 on my charger.

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#4621232 - 01/01/18 10:05 PM Re: rechargeable 9 volt batteries [Re: WhyMe]
Colt45ws Offline


Registered: 08/15/06
Posts: 9640
Loc: Central Washington
I pretty much just buy lithium 9v for smoke detectors and my Fluke. My Fluke eats Alkaline 9Vs so fast I can hardly change them out fast enough. The Lithium one I put in it is still going strong.
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