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Re: (ET) Mower deck back online



Yeah, the BB600's eat POR15. However to be honest my E20's battery boxes were so embedded with acid from the lead battery days that I think the KOH has neutralized and strengthened the steel. That said, KOH doesn't seem to damage the steel further.

Really, the stuff on the tops caused cells to die? Do tell, that's an interesting thought. I normally wash the cells once a year or so before checking water, maybe I need to do this a bit more....

C

On 11/25/2024 2:34 PM, Jay Donnaway via Elec-trak wrote:
  Congrats Chris, this post reminds me that you are one of the proud, the few, the flooded 
Nicad Users!  My workhorse E14 is still using 30 of the bb600 cells I acquired in 
2004, which were decade-old military surplus a the time.Have you found a good solution to the 
KOH misting beyond regular cell washing?  I tried the battery bags sold by Jim, but 
vibrations seemed to wear holes in the bottom of the bags and the mist got around anyway, so I 
just wound up with a sloppy mess that dissolved the POR-15 I had laboriously applied.  
Where it didn't dissolve, it just peeled off in sheets!
I want to continue using Nicads until their end of life.  So far, all my dead 
soldiers have been due to inter-cell shorts when I didn't wash the electrolyte off 
soon enough.  Otherwise, keep 'em watered and these things refuse to die!
Cheers, Jay Donnaway
     On Monday, November 25, 2024 at 09:00:05 AM PST, <elec-trak-request 
cosmos phy tufts edu> wrote:

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Today's Topics:

   1.  Mower deck back online (Chris Z)


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Message: 1
Date: Sun, 24 Nov 2024 15:02:38 -0500
From: Chris Z <czunits gmail com>
To: Elec-trak list <elec-trak cosmos phy tufts edu>
Subject: (ET) Mower deck back online
Message-ID: <47b70e2c-6e88-40c7-80ea-63d92d728dc4 gmail com>
Content-Type: text/plain; charset=UTF-8; format=flowed

Spent the morning working on the mower deck, as I mentioned earlier one
of the mounts had ripped out. I bought some 1 inch wide by 1/8 thick
steel plate and after measuring it against the deck, cutting it with the
cutting disc tool, then drilling out the holes I mounted it with bolts
to smash the deck back into shape. Next week I'll snug them down the
rest of the way and weld it to the deck.

With that out of the way I was able to get going and vacuum leaves. I
can fill a 300 gallon bag on a charge now with all of the batteries set
to 30 cells, and things seem to be working properly. Now charging at
about 750 watts, which isn't bad.

C




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