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Registered Member #1847
Joined: Fri Dec 05 2008, 07:43PM
Location:
Posts: 2
I bought 400 CR2032 batteries and I'm thinking of stuffing them all into a PVC pipe and making a 1200v battery pack. I wonder how much current I can draw from so many of these things in series.
I've made a few HV battery packs before using 9v batteries, and one could draw a fat orange arc that would melt wire from a stack of 12 or so 9v batteries.
Registered Member #690
Joined: Tue May 08 2007, 03:47AM
Location: New Jersey, USA
Posts: 616
You will be able to draw the same current as you would with one battery. As you series them, their internal resistances add up, but so do their voltages, keeping the available current the same.
Power and voltage output increase 400 times, of course.
Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
What would be the purpose of that? If you draw arc, the batteries will discharge quickly and probably explode (by reverse voltage; I wouldn't want Li batteries to explode near me ) and you will lose your $$$ into nothing.
If you want arcs, get an old microwave oven or make a simple power supply yourself.
Registered Member #1847
Joined: Fri Dec 05 2008, 07:43PM
Location:
Posts: 2
I don't plan to series all of them and then short them out, of course. I feel that it will make an interesting power supply for various things that require high voltage DC.
Registered Member #1262
Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
IIRC CR2032s can put out about an amp or so short circuited, however this is far above their rated discharge. has a data sheet on them. CR2032s are really just rated for 3mA drain over 235mAh. I do remember some "high voltage batteries" at my local battery warehouse, they were 300V, however they looked to be just an inverter and a few cells, someone here should know more about them.
Basically, just series-parallel a bunch of NiMHs for around 12V, then invert it, run it through an MOT to get 2kV (or less if you decrease the turn ratio) and then rectify+filter. You could also use some other transformer thats less bulky for less power... This will work far better for HV supplies needing more than a few mA.
BTW Where the heck did you get all those batteries, and for how much!?
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4059
One thing they are handy for is making a "Franklin Clock" that will run a small mechanical bell for quite a while. Also they are handy for low current PMTs and suchlike as well as accelerating ions.
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High voltage lithium battery pack
) and you will lose your $$$ into nothing.
