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Battery vent routing

Rob S.

Rob S.

Forum Guru
Past Site Supporter
My bike came without a battery vent hose. Got the right size tubing, and there appears to be only one way to route it. The hole through a pair of metal plates right below the battery vent is quite tight, and I'm sure it restricts flow somewhat.


image.jpg

Just noticed that the top plate is covered in white powder, indicating battery acid leakage.

I tried taking a drill to the routing hole, but it was hard because the two plates are not perfectly aligned.

1. Am I routing the vent hose properly?

2. What's a good way to clean the places where acid has leaked?

Another pic above.
 
image.jpg

Sorry, this pic is upside down. Anyone have a similar occurrence?

I'm sticking with this battery until it dies.
 
chef1366 said:
It vents and should not flow unless you are overcharging.
Click to expand...

I rarely even look at the charger during riding season.

If it were overcharging with normal use, where would the problem likely lie? Regulator/rectifier?
 
I gave up trying to thread the vent hose through that gap. if I got it through I could never get enough grip on it to fully seat the hose back on the battery. Maybe modern ones have thicker walls than back then. Now it hangs outside the hole. I keep meaning to secure it with a cable tie. One of these days.
Overcharging should be easy to spot. If you have high end of fifteen heading for sixteen volts at the battery at 5000 rpm it will cook. In extreme cases bulbs will start blowing frequently. Shorted plates can do it as well particularly during prolonged cranking.
I had that white powder when i got the bike - not as much as in your picture. There was nothing wrong with the charging system or battery apart from the usual earthing issues and I put it all down to the vent not seated properly.
 
The factory tube has a thin wall and therefore smaller outer diameter in comparison to what you might find from the limited supply of retail stores.
 
New batteries often come with a new tube, but I found that aquarium air hose is the same size as the original. Well, the stuff that I had, was. No doubt it varies.
 
Well, I bit the beer, I mean bullet, last night and removed the battery. On my bike that entails not only unbolting the gas tank and keeping it lifted, but unbolting and removing a frame cross member. And it's only that simple because of the pods!

Scrubbed the battery, added a bit of water to two cells, and set it up on the charger with the vent hose going into a clean, dry container.

In the meantime, I took a drill to that routing hole and showed it who's boss.

In the morning, the charger was in maintenance mode, and there was only a very small amount of acid in the container.

I cleaned the battery box and area with a toothbrush and water/baking soda. Tomorrow she goes in for corrective surgery.
 
Rob, it is against forum rules to start a thread about a vent line hose port/guide/hole in your battery box.
 
chef1366 said:
Rob, it is against forum rules to start a thread about a vent line hose port/guide/hole in your battery box.
Click to expand...

?!?!?!?

image.jpg

Bought the bike in October with no vent hose. When I finally made access to the battery (three months later), I found almost no acid in it, yet it had never failed on me. So I'm guessing it might last a bit longer.
 
chef1366 said:
It was a joke Rob.
Click to expand...

I figured as much, but since my smack in the head, I'm a little slow. Add a smilie to make it easier on me.

BTW, Suzi gets towed to the shop the day after tomorrow. Thanks for your help gathering the parts.
 
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