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I noticed a voltage drop at the cell vs. the power supply. I was getting 13.48v at the power supply and 12.45v at the cell. That seems like a significant drop. Have you noticed a similar voltage drop...

Thanks! I figured it out with Shane's help. The meter was reading incorrectly. I verified it by measuring the shunt instead.

So I did some production tests and efficiency seems low. I used this...

Hey Shane, Thanks for the tip. It's indeed the panel meter that's screwy. I measured the shunt and it was dropping as I turned it CW, while the meter was rising. heh.

I wonder why the meter is...

Ok, that's good that i'm not totally on crack. After I saw Zero's site, I questioned myself If I read your directions correctly. I was hoping I just mis-read it, since it would be a simple fix.
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Hrmm... I found this on Zero's site.

"Pots are 20 turn. Crank the "I" pot fully CW for MAX current. Turn the "%" CW until you just hit 100%, straight DC at the output, or just a hair less. Connect...

Yeah, learned my lesson from that. I replaced all the wires with 6g wire now. Now I'm having issues with the PWM not lowering the current. I posted on the PWM forum to see if I can get some help.
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I Just got Shane's PWM hooked up. The instructions say to turn the limit and duty pot's CCW all the way then to add Electrolyte till the target current is reached. Then adjust the limit pot CW till...

I looked at my cell last night and noticed my endplate where I have the positive connector hooked up had melted a bit. What I think happened, The 12g wire I had hooked up couldn't handle the current...

odd.. I didn't get an email notification on your reply.

I've been very busy since my last post and didn't get a chance to work on it much. But i'm getting ready to jump back into it.

I got my...

ugh. I typed out a response and it got deleted. I'll try again...

Thanks for all your help Helz.

What I meant by brown gunk, I saw other people mentioning they got brown gunk during their break...

So i've been running it for 3 days with about 2 1 hour breaks each day (taking it home/work). The water is only slightly cloudy but no brown gunk yet.

I just got my 50a power supply and hooked it...

Alright. that sounds good. I'm still waiting for the nasty brown gunk to show up. so far the water has only gotten a slight brown tint. I know it can take couple days for it to show up, but I did...

After running it at home last night, I started to notice A lot of foam forming. It took the whole day of running before the foam started. What would cause the foam to form all of a sudden? is it just...

So its been running for about 6.5hrs straight, temp is at 113F, current has climbed to 10.55 Amps. It's still climbing. When I get home, I think i'm going to add some distilled water to dilute a bit....

I temped the side of the plates, and it's at 98F now. Current is currently at 8.16a and still rising. Water isn't as clear anymore, has a real slight brown tinge now.

I better keep an eye on the current. since my last post, it has raised up to 7.3A. I want to make sure it doesn't run away. Plus my power supply is only good up to 14a. I'll be getting a 50A power...

Thanks helz, I appreciate the advice you've given me. It has helped me make some decisions I was unsure of.

I have it running on my office desk right now. My bubbler isn't working. There's...

I made a makeshift bubbler and found some brass fittings and shoved some steel wool into it for a flashback arrestor. I think most people use brass wool, but steel is all I have. I'll feel much more...

So after futzing with it for 30 mins. I found out I didn't have the reservoir high enough and it was causing it not to fully cycle. I put in about 64oz of water and 1/2tsp of NAOH. It's at around...

so i'm getting ready to power up the cell to start the break in process.

I put an ohm meter across the electrodes and i'm getting 360ohms across it without any water through it. I wasn't...

I think i'll give that a try. I'll head to my ace hardware and see if if they have any drain cleaners with NAOH in it.

Thanks!

I was going to use KOH, since I have 10lbs of it.

I decided to skimp a little on the bolts that sandwich the endplates. I'm using armor coated bolts. All nuts and washers are stainless though. The positive electrode is using a 18-8 SS stud, washers,...

The cell is finished!

http://turborocco.com/gallery2/d/1162-2/IMG_1010.JPG

http://turborocco.com/gallery2/d/1150-2/IMG_1018.JPG

http://turborocco.com/gallery2/d/1153-2/IMG_1019.JPG
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Sounds good! I started sanding them last night, I have 4 more plates to go. But yeah, I did just that. I rubbed them down with alcohol, then sanded them. I'll rub them again with alcohol once I...