I'm looking for advice regarding rechargable batteries.
Right now I have a few different sets that I use with my various gear: some Radio Shack brand AAs, mixed mAH-capacity Duracell AAs, and the Enercell/Radio Shack rechargable 9V.
Frankly... I don't really trust my batteries anymore. I have no idea how long they last in my devices, and no indication as to when they'll putter out on me. It occurs to me that I don't recall the last time I bought new ones, so maybe it's just that those batteries are old and I've used them up past their functional lifespan. If that's the case I'll just recycle them and get some new ones. It's not a major conern of mine at present for much more than my field recorder since I'm motly mains-powering my Zendrum and rig anyway, but I don't like having that gap in my tech.
I'd also like some way to test them--it was recommended to me that I get a multimeter; those passive "battery testers" are pretty well useless in my experience. Problem is, I'm not sure how to read the multimeter. I know a 9V doesn't always have to read "9" for it to be useful, but I forget how long I can go before needing to recharge.
The one requirement I have is that I need to be able to use those batteries in the universal charger I have, I'm not getting rid of that. I remember that Inspector 109 recommended a 9V rechargable but said it came with it's own charger--that puts it out of the running for me.
So, should I just get some new rechargables? Is there a better brand than Enercell I should be looking at? Advice welcomed.