This is what has worked for me for the last couple of years...
http://www.thomas-distributing.com/mh-96v230.htm http://www.thomas-distributing.com/m...harger_buy.htm
I have 3 basses which require a 9 volts as well as a SABDDI, a Boss TU-2 and a Dunlop Bass Wah that all use 9V (now and then).
I don't know how many times I've recharged the 4 I have but it's been alot.
I'm well past breaking even on the purchase.
Now, I always go to gigs and practice with fresh batteries. I never have to milk 1/2 a battery. And they last.
I used to use a wireless transmitter that ate a 9V in about 3 hours. I couldn't get through a long jam session without replacing the battery.
These solved that problem.
They also charge up in a couple of hours.
I have a bunch of AA batteries as well.
They go in my new wireless transmitter as well as a ton of stuff around the house.
This looks like alot of money up front (about 60 bones for a 3 pack of 9V plus the charger) and I had a hard time pulling the trigger on these because of it.
Seriously though, I am so glad I have these. They're fantastic.
I recommend them to my friends all the time.
Chad