Rechargeable batteries in Wireless microphone

I was asked recently about using rechargeable batteries for wireless microphones. I discovered that I have two completely different opinions on the topic:

1) What I say I believe: There’s no two ways about it: batteries are expensive; 9v batteries are the worst, but even AA batteries aren’t cheap in the quantities we need for a largely wireless church stage. Current professional rechargeables are up to the task, and NiMH is a competent technology.

Consumer rechargeables only produce about 7½ volts on their best day, so we don’t go there, but pro batteries can power nearly all wireless well for at least a couple of hours.

I never really liked the memory challenges with NiCad batteries, but with nickel-metal hydride (NiMH) batteries, the batteries are more reliable.

However, some manufacturers like Shure and Lectrosonics, still don’t like using any rechargeable 9v batteries, though they’re not as fussy about rechargeable AA batteries; apparently there are enough differences in the batteries and in the wireless technologies that use them that AA rechargeables aren’t so evil. Fortunately, many wireless manufacturers have moved to AA technology.

2) What I really believe: I don’t use rechargeables for my own church’s wireless, and I have six or eight wireless systems. (I just did a quick survey: nobody here uses rechargeables in their own or their church wireless systems.)

Some of our reasons:

a. Power curve: Rechargeables drain non-linearly. Alkaline drains linearly. That means that an alkaline battery, when it nears the end of its lifespan, is still usable. You know it’s getting tired, because you’re getting a few dropouts. It’s frustrating, but it’s not the end of the service.

When a rechargeable battery starts to go, you have a few seconds until it’s completely dead. If that happens 5 minutes before the service is over, you’re toast, whereas with an alkaline, you can easily cope for that last few minutes.

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There no personal electronics forum, so

by kidatheart

I wonder if some comp-forum people would be kind enough to answer questions about buying an MP3 player.
People (including me) have asked on the music forum, but there usually aren't any replies.
I want to buy an MP3 player ASAP. It will be my first. I am thinking I should go with either iPod or iRiver. Here are some of the things I'm looking for. I'd appreciate comments or suggestions.
- At least 1000 songs' worth of internal storage
- easy to play through speakers as well as headphones. I'll need powered speakers, right? But I need this setup to be as portable as possible

PYLE-PRO PYLE-PRO PWMA50B 50 Watts Portable Waist-Band Portable PA System with Headset Microphone, Rechargeable Batteries (Color Black)
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The Samson Meteorite is a cracking little portable USB microphone that will be perfect for those that want to take the first step towards higher quality audio recordings. It's incredibly portable, easy to use and provides good quality sound.

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