On Saturday, 5 May 2018 15:00:38 UTC+1, Dave Plowman (News) wrote:
In article ,
Marland wrote:

that or fix it. Self discharge can be caused by shed lead accumulating at
the bottom of the cells. Tip acid out, rinse repeatedly with distilled
water, return acid. Obviously the acid can eat you so various cautions apply.

Did that long ago & the battery lasted years.


I was told do that by a work colleague who had been in the submarine
service in WW2 in an engineering rank. Only did it once with a battery
on my Riley1.5 ,sometime around 1974. It did fix it for a while but
wether it will still work on modern batteries which seem to have the
plates much closer together I haven€˜t tried.

Personally, I doubt it. Such a cheap and easy fix would be common
knowledge. Probably from the days when the separators were made of plywood.

It's been known a long time, but most people are not suitable for the task due to the tipping about of acid. Nothing about modern batteries prevents it working.


NT