Not quite home repair; unless you use several 12 volt truck/auto
batteries to power your 24 volt computer UPS, as we do.
However those of us who 'do' at home are most likely to attend to (at
least the smaller stuff) on our motor vehicles? So this tip may help?
Picked up a couple of lead replacement side terminal connectors for
auto type batteries to set up an out-of-vehicle charging set up for
some 12v recreational/spare auto style batteries.
Each connector came with a short bolt to screw into the battery side
terminal. As it was installed each bolt 'seemed' a little bit too
long! To continue turning it in after it appeared 'to bottom out'
could IMO have either damaged the soft lead thread in the battery or
perhaps broken through the battery post into the interior of the
battery. So I stopped, investigated an measured!
But by not tightening it fully the connector was loose; the solutions
were; use a shorter bolt, grind off end of the bolt provided by say an
eighth of an inch, or use a suitable washer (which due to the
depression in the connector into which the bolt head fits will have to
be certain size, only slightly bigger than the bolt head!
Or possibly, but undesirably, using say a steel plated washer between
the lead surface of the side connection and the lead connector thus
introducing a different metal between the two contact surfaces which
can carry high current.
These connectors looked as though made in 'The Peoples Republic' and/
or cheaply made somewhere else?
Not saying that because these were perhaps Chinese, Korean or third
world made etc. that all such side post connectors are necessarily no
good. Although recent events involving, food products, pet food and
more recently toothpaste (falsely/alleged, but not actually made, in
South America) seem to throw doubt on manufacturing to the proper
standards we are used to in North America and the European Union.
BUT: This warning might save someone the grief of not damaging a side
Must go and change over the charger lead clips to the other spare
recreational battery until I get the bolt length sorted out! I think
shortening the bolts, although it will grind off the plating is
quickest and safest way to go!.