Shure ULX-P Rechargeable Battery Question

[ptidwell]

I have a ULX-P and I am using Nickle-Metal Hydride Batteries.
8.4V 150mAh 9v I can't make it through a set with these. BTW they are RadioShack brand. Any suggestions on a battery that will last is greatly appreciated.

[Dragonlord]

I've read that 9.2V should do the trick. Can't help with brands though.

[Schizoid75]

I'm still working on this with my Shure as well. I've found big differences between battery brands, and even batteries within the same brand. Different chargers seem to vary, too. Very hard to pinpoint the best solution yet. I have been able to get through 1-2 sets, but that's about it. The most frustrating thing is when a rechargeable "dies." I've had some where I've charged them, the light goes off on the charger, I put it in my wireless and it's already incapable of powering the unit!

[JTE]

We use a Shure ULX transmitter/receiver for the pastor's main mic at church. We're using ProCell 9VDC (the "industrial distribution" of Duracell's alkaline batteries) and I put a new one in the transmitter every other Sunday, so that's about five hours of transmitter time (he's really good about switching it off when he's not speaking).

Here's the deal- At some point, the transmitter shuts down when it doesn't have enough voltage to work. It's not gradual, the unit monitors the voltage and when it's too low to transmit, it shuts down. And most fully charged "9 volt" rechargables are about 7.5 VDC while a lot of transmitters crap out at 7.2 volts. That's not much room.

Go to Batteries + or Interstate Batteries and buy a box of 24 9V ProCells for about $24. Put a new one in for each gig, and turn the transmitter off between sets.

jte

[Schizoid75]

For me, it's not entirely about the cost. Sure, I guess there's part of me that hopes rechargeables are cheaper in the long run, but the main reason I do it is environmental. I have no problems running down the road to the Sam's Club and buying my 9v's in bulk, but I don't like the idea of my contribution of those 9 volts to landfills. Obviously I go through fewer batteries with rechargeables plus there are numerous places that will recycle rechargeable batteries. I don't think anybody takes used alkalines.

On a different topic, I ordered some Maha Energy PowerEx 9.6 volts and they are too much for the Shure. It's weird. They transmitter powers up and both the transmitter and receiver show a full 3 bars of power, but no audio. I just ordered plain 9 volts from them, so we'll see how long they last.

No matter what brand of rechargeables you use, I highly recommend Maha's charger. Here's the four space one:
http://www.mahaenergy.com/store/view...?idproduct=364
They make a 10 battery charger, too. The 4 battery is very compact and charges within 2 hours; much smaller with less time than other chargers I've tried.