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House Battery Roll Out Tray


thompson_skip

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4 hours ago, Ivan K said:

Isn't it easier to just replace the bearings and not worry about fitment? Or is the whole tray just eaten up beyond repair. I fixed ours but it may not be the same.

It is the rollers, one side won’t come out all the way. The other side has come out of the track and the bearings have fallen out. I’m have trouble finding the right side tray so I may need to rebuild my tray. Thanks 

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All the years i worked on Trucks that had slide trays the ones with bearings always seemed to have the frozen bearings, where as the ones with the plastic slides just seem to rot out from acid. Over the years i started to understand that when a battery begins to start “gassing” that the vapor would gather on the top of it then that collected dust, so if you took a DVOM and touch one terminl to the POS terminil then drag the other lead of the DVOM across the battery you can see voltage. Its my opinion that once that voltage gets on the tray then its seeking a path to ground… thru the bearings. Which doesnt take long to etch and destroy the bearings surface then failure is eminent, there kind of like the sacrifice for the tray itself. Then for the ones with “slides” that acidic contact has nowhere to go so now the entire tray becomes the sacrifice. Please note this is just my opinion, with no science to back it up just years of trial an error of trying to fix a inherant issue that has plauged fleet shops for ever. Even with “sealed or AGMs” though they dont have gassing they do get dust an dirt that mixed with moisture will an do make a connection from battery posts to ground, all this morning coffee Philosophy leads me to look forward to the day we can power our coaches with dilithium crystals😜🤪😂 HAPPY MONDAY everyone😎

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On 1/30/2022 at 2:48 PM, Ivan K said:

Isn't it easier to just replace the bearings and not worry about fitment? Or is the whole tray just eaten up beyond repair. I fixed ours but it may not be the same.

Yeah. I haven't scrutinized my battery tray, but I bet it's just a super-heavy duty set of industrial drawer slides in there that could be replaced.

At one point I was considering adding a 2nd tray above my 4xGC batteries. Couldn't find a standard size tray that was the same size. 

Cheers

Walter

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On 2/3/2022 at 8:49 AM, wamcneil said:

Yeah. I haven't scrutinized my battery tray, but I bet it's just a super-heavy duty set of industrial drawer slides in there that could be replaced.

At one point I was considering adding a 2nd tray above my 4xGC batteries. Couldn't find a standard size tray that was the same size. 

Cheers

Walter

Sheet metal shop should be able to make a tray for 40-60$. Easy peassy.

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  • 5 months later...

Thanks to all that replied with your suggestions. I have rebuilt my slide tray using a pair of VEVOR 500lb drawer slides. Amazon about $35.00. I think the rebuild should last the life of our great 2003 Dyansty we purchased new in 2003😁😁. Here is the link for the slides.  I used stainless nylon nuts and stainless bolts to attach the slides to the drawer.  
 

https://smile.amazon.com/gp/product/B091T1CZD6/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

F88AD670-DF97-47A9-B9BB-7EB6BF1F7A63.jpeg

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On 2/3/2022 at 8:51 PM, Jdw12345 said:

I see it's only rated for 200 pounds.  That might be a little light for 4 batteries.  My 6v Duracell AGM's at 70 lbs each.

 

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1 hour ago, Chargerman said:

I painted my trays with POR-15. Great product. Neutralizes the rust and puts on a very rugged coating. 

That, from a lot of reading and past comments, be the Daddy Rabbit, of preferred coatings for a MH battery tray.  However, the 3 or 4 coats of Rustoleum PU bed liner paint is working well on mine, which I refurbished in 2013.

BUT THE BEST CORROSION PROTECTION is ELIMINATION.   Don’t overfill the cells.  Use a dipstick or Trojan “card”.  Install the Battery Miser caps that prevent misting or spewing out of electrolyte.  They also lengthen battery life as they cut down on 90% of the evaporation during charging.  That is probably why my “paint” job has lasted so well.

 

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Tom, where do you get the items you mentioned?  I have thought I’m over filling but never knew of a way to check. I did paint my box with Rustoleum, picture doesn’t look like it as it has dust on it😀. Thanks 

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47 minutes ago, thompson_skip said:

Tom, where do you get the items you mentioned?  I have thought I’m over filling but never knew of a way to check. I did paint my box with Rustoleum, picture doesn’t look like it as it has dust on it😀. Thanks 

Find a hardwood (or pine) dowel about 3/8" Dia.  I cut mine about 6" long.  Put the dowel into the battery and let it seat or sit or rest on the plates.  Mark the "top" of the cell wall on the dowel. That is a "reference" dimension. If you measure DOWN from whatever surface you used to the bottom of the well, then that is, theoretically, the OVERFILL Mark.  What you are trying to get is the distance from the bottom of the fill well to the top of the plates. Trojan handed out plastic "gages" at an RV show, but I can't get them to send me one.  Once you know the distance from the bottom of the well to the top of the plates, then you "HALVE THAT".  I added about 1/8" just for a little margin. I then scribed a line onto the dowel at the "Fill Plus" dimension. I then cut a small groove into the dowel, all away round the perimeter or circumference.  

I then insert the dowel and BINGO....have a dip stick. I add DI water to the Electrolyte....Kentucky Windage from a small squirt bottle. I use a paper towel, as it is disposable and the acid eats holes, to wipe "semi dry" the electrolyte and remeasure.  BINGO...a perfect fill. I have been doing this since I refurbished the trays.  I store the stick inside the plastic pouch that came with the Specific Gravity Meter that I got from Amazon...  It is VERY accurate, assuming you are careful using the bulb and also getting the fill volume to the "fill line" at the top...and hold it vertical.  My SP measurements now correlate with the Voltage readings for the SOC.  So, I know how the cells are....or the condition.  

Look on Amazon for Battery Miser Caps. You want the Medium sized...  Now I am using Flooded Cells and my Vette DOES have a Buggy Whip bracket....Don't ask me about AGM's.  Trojan says they have "flooded" AGM's and that you maintain them....same as wet cell flooded.

BTW...for what it's worth...I have not had any corrosion and I, semi annually, drain down my Trojan's 2 - 3 times to around 50% to keep them exercised. I rarely, and others report this also, add more than maybe 3/16" of DI water to the cells as the Miser Caps are like a mini distillation tower and the electrolyte runs back down in instead of being vented.

Good Luck...

 

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