12V Battery for a Shure PG88 receiver ?

I am trying to find a suitable way to power a Shure Mic system receiver that is made to be powered with a power adapter ( 110 > 12 ). There are many options for all sizes of 12V batteries on eBay. Any specs from these batteries I should pay attention to ? Are there any chances I fry my receiver ?

Here are the links to a sample battery and my receiver :

The battery : http://www.ebay.com/itm/Hot-New-Black-5V-9V-12V-3-in-1-portable-DC-Rechargeable-Li-ion-Battery-Emergency-/321000318189?pt=US_Rechargeable_Batteries&hash=item4abd1c24ed

My receiver : http://www.shure.com/americas/products/wireless-systems/performance-gear-systems/pg88-dual-channel-diversity-receiver

The power adapter that came with the system is indicating :

INPUT : 120/127V~ , 60Hz 150mA Max. OUTPUT : 12 --- 400mA

LPowell

I just recently got a Shure Performance Gear wireless lavalier system, and I've been thinking about the same thing. The receiver is rated to take 12-18v, so it should run fine on two rechargeable 9v batteries. There's just enough room for a 9v battery on either side of the box, next to the antennas. However, iI'd need to install a battery power switch on the back panel.

The battery you linked should work fine as well. Just be sure to get the voltage polarity correct!

Great, That's comforting coming from an audio guy. Yes, I soldered my cable with the OEM polarity. I have manage to rig-up a few 10x " AA " batteries holders. Considering the NiMH is only 1.2V the 10x holder would provide a decent 12V. I needed some assurances before plugging it in. LOL

Question is; at the rate of 400mA what would be the life each set !?

bangkng

@010101 Don't buy that battery. Buy this battery: http://www.amazon.com/gp/product/B0067XMPB6/ref=oh_details_o05_s00_i00

here's the thread for it http://www.personal-view.com/talks/discussion/285/powering-gh2/p11

@bangkng, thanks great thread and info ! I'm not sure why my search didn't find it. In fact I was looking into something similar : http://www.amazon.com/EZOPower-High-capacity-Rechargable-10000mAh-Blackberry/dp/B005XQSN9G

As " dish " being advised and LPowel kindly reminding, the polarity must be matched to OEM device or it could have adverse effects.

andyharris

I power my AKG wireless system from a 3S 1000mAH lipo. It is easily enough to be able to leave the system on all day (say 0800 to 1700).

I now use a 6S lipo to drive my crane motors, plenty of grunt and very portable.

@andyharris, Those are 11.1v at full charge, aren't they? I can imagine at the end of the day they drop the voltage down to 8v~7v and your AKG keeps going !!! Hmmm. It's interesting how flexible these devices are these days. How about I get a 4cell 14volt !? It's close enough to 12v hopefully won't kill my receiver and it packs 4000 mA. Thanks for the tip.

andyharris

@010101 They are at 12.6V full charge. I wouldn't normally let them go below 11.6V, below 10.9V there is the possibility of permanent damage. For any application that would take the batteries low I have a box that uses MOSFETs to disconnect the battery and some LEDs that come on at 2/3 and flash at 1/3 capacity.

I really enjoy flying models so I have a not inconsiderable collection of LiPos. Since some of the big ones are expensive I like to look after them!

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