Yeah, that so called 'upgrade bug' seem to be lurking around my room these days... then again, I have pretty basic stuff right now, so it would make sense to upgrade. I hear so many good things about those superlux mics too and the umphrey's recording done by alex is incredible...

Oh also here is a very similiar one I found on a website for about the same price, except 9-10 bucks to ship:
http://www.powerstream.com/dc6.htm

What is cool on that page is it gives some nice detailed specs in a table for each voltage setting....I heard some talk about trying to use a 6 V SLA but it being slightly too low for the regulator to work.   And judging by that page it says maybe the same thing...it is iffy.  For 4.5 V setting it requires "6 volts below 1 Amp, 8 volts at 2 amps".   I've actually fould a 8 V SLA exists but it was much more costly and has hardly any capacity.

But I was thinking a cool idea would be to build a pack using a 6 V SLA in series with a C or D cell rechargeable Ni-MH to bring it up to a high enough voltage(7.2 V).   This could be a very nice setup for people who need or just want to power the JB3 solely?   Would save a lot of weight and also save on the wasting of energy which the regulator burns off as heat.

Ok I'll admit I actually stole the idea from my dad who had that setup for his video camera a while back.   But it worked out nicely it seemed.   He had the SLA in a case and just attached a D cell battery holder to the outside of it.   I'll see if I can go find it in the basement if he still has it and take and post a picture of it maybe.

let us know if the adapter works, if it does i'm going to walmart this weekend.

JB3 has a VERY LIMITED OPERATING RANGE.  I doubt it would work.  Let us know if it does at any rate...

Many folks here and elsewhere have experimented with ways to power this thang...

Rick

Well right now I can confirm the adapter works great with the plug size included for the JB3.  And I can also confirm it works perfect at the 4.5 V setting off of my car battery and also off of my car jump starter battery in my house which are both at 12 V.   So I would assume a 12 V SLA would work fine too.

Ok, here are a few pics of my dad's video camera pack.  Oh the memories of family vacations from years ago...my dad was definately stylin' with this thing on his hip ;p

And one last view.  This is the jumper cable attached for when you want to charge the 6 V SLA back up you need to have it attached(while having the Ni-MH D battery removed of course!).

FWIW , i made a little pack lastnight ,

4 2100mah rechargeables with charger 25.00
r/s type b adaptacable connector
r/s 1 adaptacable

i had to run the batteries down a bit but after that everything works great  for those in question,  the adaptacable end has to have the negative side where it says tip,  

peace  , tonite will be the first trial run for my gear soo we shall see

Whoa, hold up....I thought it was positive tip?   At least that is what it says by the symbol on the JB3 itself and I tested it too with a multimeter before plugging it in.   Does the symbol on your JB3 say negative tip....that is pretty confusing if they don't keep it consistant for all of their units.


Yeah, that is another cool option people have done in this thread.  It is light weight and can grab you a few extra few hours.   I was thinking about either doing that(with 4 cells) or buying a premade 4.8 V pack from batterspace and add it to my order when I buy the UA-5 batteries.   Here is one I was thinking of buying that is 4000 ma capacity for only 13 bucks just in case anyone else may be interested:

http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=582