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Author Topic: Repairing Battery Case  (Read 510 times)

Offline Bob_Roller

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Repairing Battery Case
« on: February 03, 2023, 06:36:48 AM »
Bought 4 batteries for the bikes a few weeks ago 18 ah .
Buy 4 batteries get free shipping .
All of my bikes use the same size battery .
Went to replace both batteries in my oilhead, found a piece on the bottom of one of the batteries missing .
Got a replacement battery from the seller this week .
Seeing as how it is an AGM type battery, no fluid loss, the fiberglass mat in that cell is just damp with acid .
I had some left over JB Weld, an epoxy product available in the US, that I used to repair the rear fender of my Guzzi .
Got the repair done yesterday on the battery case and will install it on my '82 LS today and see how long it lasts !!! 
Manufacturer claims it's chemical resistant, time will tell with battery acid !!


https://www.jbweld.com/product/j-b-weld-twin-tube
« Last Edit: February 03, 2023, 06:55:02 AM by Bob_Roller »
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!

Offline dogshome

  • Lives in Foothills of Mt. Olympus
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  • Posts: 281
Re: Repairing Battery Case
« Reply #1 on: February 03, 2023, 12:22:56 PM »
It's strong stuff. It's been holding the blanking plugs where the swirl flaps came out on the inlet manifold of my diesel car for 5 years! Hot, cold, 30 or 40 PSi on/off...Oil, diesel....   8)
肉(r?u)包(bāo)子(zi)打(dǎ)狗(gǒu) (meat+bun(2nd and 3rd)+hit+dog)
* Literally: To hit a dog with a meat-bun.:-O

Offline Justin B.

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Re: Repairing Battery Case
« Reply #2 on: February 06, 2023, 07:50:35 PM »
Never tried it with acid but it stands up to gas quite well.
Justin B.

2004 BMW R1150RT
1981 R100RT - Summer bike, NEKKID!!!

Offline Bob_Roller

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Re: Repairing Battery Case
« Reply #3 on: February 07, 2023, 06:11:39 AM »
I cut a piece of plastic from a muriatic acid bottle, pool acid and placed it on the glass mat, at least the JB Weld won't be in direct contact with the acid, just exposed to the vapor .
I'm sure the service life of the battery has been reduced, but it was free !!!
'81 R65
'82 R65 LS
'84 R65 LS
'87 Moto Guzzi V65 Lario
'02 R1150R
Riding all year long since 1993 .
I'll give up my R65, when they pry my cold dead hands from the handlebars !!!!!