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Old 07-08-2011, 04:23 AM #1
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Default High discharge 9V Batteries

Anybody seen 9V batteries that have a higher discharge rate than these and are rechargeable.


500mA max discharge.

Two Li-Ion 9V 500mAh (4.5Wh each) Rechargeable Battery+ 0.3A Smart Charger (9V Snap-on connector)



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Old 07-08-2011, 04:37 AM #2
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Default Re: High discharge 9V Batteries

Interesting. I wonder if these would work well with a Rckstr driver. Capacity is not great through.
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Old 07-08-2011, 04:56 AM #3
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Default Re: High discharge 9V Batteries

This would be more fitting than 2xCR2 or 2x10440 depending on the kind of host you are using. Typically 10440 and cr2 batteries are around ~300mAh, so these batteries would be a good option for project box types IF you are that pressed for keeping it as small as possible. Just a thought.
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Old 07-08-2011, 05:04 AM #4
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Default Re: High discharge 9V Batteries

Of if you did not care about size and you wanted some serious discharge. You could run quite a few 445's with two of these in series and a bunch of P3's. 160A continuous discharge rate.

LiFePO4 40160S Cell: 3.2V 16 Ah, 160A Surge Rate, 51.2Wh with M3.4 screw Terminal

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Old 07-08-2011, 05:08 AM #5
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Default Re: High discharge 9V Batteries

Holy crap.
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Old 07-08-2011, 05:12 AM #6
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Default Re: High discharge 9V Batteries

DTR;

I've seen a few sources claiming 600mah:

Your Online Source For 9 Volt 600 mAh Li-ion Rechargeable Battery

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Old 07-08-2011, 05:17 AM #7
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Default Re: High discharge 9V Batteries

in my experience 9v batts dont run well in series. that is 18v. and they over heat and break.

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Old 07-08-2011, 05:19 AM #8
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Default Re: High discharge 9V Batteries

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Originally Posted by chipdouglas View Post
in my experience 9v batts dont run well in series. that is 18v. and they over heat and break.

michael
He was talking about these.

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Old 07-08-2011, 05:20 AM #9
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Default Re: High discharge 9V Batteries

ahhhh, touche
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Old 07-08-2011, 05:25 AM #10
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Default Re: High discharge 9V Batteries

Try nimh. They have lower capacity but I believe a nimh will do 8c absolute max. You should probably look that up to confirm.

From a quick google it seems nihm is reccomended for 5c. That's 1.25A with this battery.

Tenergy 10001 9V (8.4V) 250mAh NiMH High Capacity Rechargeable Battery
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Old 07-08-2011, 05:29 AM #11
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Default Re: High discharge 9V Batteries

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DTR;

I've seen a few sources claiming 600mah:

Your Online Source For 9 Volt 600 mAh Li-ion Rechargeable Battery

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Batteryspace has some as well that are rated @ 600mAh but they discharge at like .05C or 35mA max continuous discharge. These are 1C. That is one of the reasons I like their site as they almost always put the discharge rate on the details page.

And they also have a 1200mAh unit but it only discharges @ 50mA.

Primary Lithium Battery: 9V 1200mAh (10.8Wh, 50mA rate) Compatible with Energizer L522-9V / Ultralife - UL Listed / UN approved


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Holy crap.
I actually have one of the smaller 100A 10Ah ones. Here it is next to a 32650.




Quote:
Originally Posted by benmwv View Post
Try nimh. They have lower capacity but I believe a nimh will do 8c absolute max. You should probably look that up to confirm.

From a quick google it seems nihm is reccomended for 5c. That's 1.25A with this battery.

Tenergy 10001 9V (8.4V) 250mAh NiMH High Capacity Rechargeable Battery
I was looking @ Li-ions thinking they would have better specs but it seems the Nimh discharge better and the Li-Ions have better capacity.

Last edited by DTR; 07-08-2011 at 05:32 AM.
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Old 07-08-2011, 05:33 AM #12
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Default Re: High discharge 9V Batteries

What do you use those for?
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Old 07-08-2011, 05:47 AM #13
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Default Re: High discharge 9V Batteries

I have not gotten around to using it for anything yet but I have some ideas that I have not had the time to pursue yet.
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Old 07-08-2011, 05:49 AM #14
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Default Re: High discharge 9V Batteries

I'm sure you do.
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Old 07-08-2011, 06:09 AM #15
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Default Re: High discharge 9V Batteries

I bet it could drive a nice led. (or a few)
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Old 07-08-2011, 04:00 PM #16
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Default Re: High discharge 9V Batteries

I suppose that using a pair of 40160 cells in a handheld laser, we need to redefine the mean of "handheld", also ..... "two-hands-held", anyone ?

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