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Author Topic: 170mAH vs. 200mAH. for 9v batts?  (Read 3720 times)

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Offline Unitmonster

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170mAH vs. 200mAH. for 9v batts?
« on: July 12, 2004, 06:05:15 AM »
Is there enough difference to warrant picking up these:

http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=1074

plus a charger,


instead of these:
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=319&HS=1

 ??? ???

I'm no electrical engineer, but it doesn't seem like 30mAH is a lot more juice.
AT853rx (c,sc,o)> Fostex FR2-LE (Busman T-Mod)

Offline Unitmonster

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #1 on: July 12, 2004, 10:20:54 AM »
bump this 'cause it's not showing up on the main index.  Any help appreciated. Thanks!
AT853rx (c,sc,o)> Fostex FR2-LE (Busman T-Mod)

Offline leegeddy

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #2 on: July 12, 2004, 10:39:16 AM »
i have some 220mah 9v and they suck!!!

what do you plan on running with the rechargeable 9v?

marc
"I'm a taper, he's a taper. Wouldn't you like to be a taper too?"
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Offline Unitmonster

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #3 on: July 12, 2004, 10:50:54 AM »
powering a ps-2 and an ad-20 in stealth situations.  What would you suggest for 9v block batteries then?
AT853rx (c,sc,o)> Fostex FR2-LE (Busman T-Mod)

Offline leegeddy

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #4 on: July 12, 2004, 10:59:42 AM »
powering a ps-2 and an ad-20 in stealth situations.  What would you suggest for 9v block batteries then?

Energizer Lithium 9v. you can find them on Ebay for a very reasonable price.

as a reference, Duracell 9v (i've read that they are around 550mah) lasts only about 4.5hrs. for my pre.  i'm getting almost 3 times that amount with the Energizer lithiums.

marc
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"Mics? What mics? This is my hat."

Offline Unitmonster

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #5 on: July 12, 2004, 11:03:13 AM »
are they rechargeable (the lithiums I mean)?  THanks for the inside scoop.
AT853rx (c,sc,o)> Fostex FR2-LE (Busman T-Mod)

Offline leegeddy

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #6 on: July 12, 2004, 11:13:18 AM »
are they rechargeable (the lithiums I mean)?  THanks for the inside scoop.

no. one time usage.  for stealth taping, i always run the lithium 9v.

marc
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"Mics? What mics? This is my hat."

Offline jk labs

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Q: Dimensions of 9.6 Volts 170 mAH NiMH?
« Reply #7 on: October 28, 2004, 05:41:09 PM »

Anyone here use the 9.6 Volts 170 mAh NiMH rechargeables from PowerEx/ MAHA? 

I wonder about it's dimensions. Compared to other 9 Volts batteries does it stay right on the average so to speak or are they strecthing the tolerance specs to the hilt so as to pack as much energy into it as possible?

I have a really tight space, after trimming it barely accepts the std. 9 Volts LithiumIon and now I wonder if the PowerEx would fit.  And if it is of any quality ....

Thanx!

Offline jk labs

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #8 on: October 28, 2004, 05:45:44 PM »
i have some 220mah 9v and they suck!!!

what do you plan on running with the rechargeable 9v?

marc


What does suck mean in this context? just wondering....   

Offline leegeddy

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #9 on: October 28, 2004, 05:56:36 PM »
i have some 220mah 9v and they suck!!!

what do you plan on running with the rechargeable 9v?

marc


What does suck mean in this context? just wondering....   

john;

they sucked as in they were poor.

i have iPower 9v and the physical size wasn't an issue.

marc
"I'm a taper, he's a taper. Wouldn't you like to be a taper too?"
"Mics? What mics? This is my hat."

Online gewwang

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Re: Q: Dimensions of 9.6 Volts 170 mAH NiMH?
« Reply #10 on: October 31, 2004, 08:02:07 AM »

Anyone here use the 9.6 Volts 170 mAh NiMH rechargeables from PowerEx/ MAHA? 

I wonder about it's dimensions. Compared to other 9 Volts batteries does it stay right on the average so to speak or are they strecthing the tolerance specs to the hilt so as to pack as much energy into it as possible?

I have a really tight space, after trimming it barely accepts the std. 9 Volts LithiumIon and now I wonder if the PowerEx would fit.  And if it is of any quality ....

Thanx!

I used a pair with my sax once and the low batt indicator came on after 45 minutes. That's why I only used them once.

Offline Brian Skalinder

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #11 on: October 31, 2004, 01:20:58 PM »
FWIW, I've used 9v rechargables a couple times - with my SX-M2/LS2 and...something else, I forget.  And yeah, they suck.  Suck = crap run-time.  The capacity just isn't there yet.
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Offline jk labs

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Re: 170mAH vs. 200mAH. for 9v batts?
« Reply #12 on: October 31, 2004, 02:35:51 PM »

Thanks for the replies.

The sx-m2 draws down the 170 mAh NiMH unreasonably fast? The sx-m2 draws as much as 80 mA.  Less than an hour run time sounds indeed like this battery really struggles at higher discharge rates.

I plan to power just a single no-nonsense gain stage where I want more than 9 volts across the amplifer. 170 mAh is plenty in this application. My concerns are mostly how fast this particular high-capacity battery "ages", how fast it self discharges and how it stands up to
use and abuse.

Seeing as I have the mAh under control I guess I'll just have to try.

 

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