On 26/11/2016 09:45, Rod Speed wrote:


"MrCheerful" wrote in message
...
On 26/11/2016 04:16, wrote:
On Friday, 25 November 2016 19:06:55 UTC, MrCheerful wrote:
On 25/11/2016 18:19, tabbypurr wrote:
On Friday, 25 November 2016 00:33:34 UTC, Dave Plowman (News) wrote:
In article ,
tabbypurr wrote:
On Thursday, 24 November 2016 16:22:57 UTC, Brian Gaff wrote:
"Bertie Doe" wrote in message
...
The boss in local battery centre says it's ok to connect neg
charger
lead to neg terminal on battery.

However, car's user manual suggests connecting to somewhere on the
chassis. This can be a pain, getting a good connection. Any
thoughts
TIA.



I don't see the reason for using the chassis unless testing the
earth,
but you don't need a charger for that!

I persume the idea is to reduce current if anything shorts, thus
avoiding fire.

With a battery charger? Don't think even the very cheapest I've
ever seen
was devoid of some form of protection against shorts.

That of course offers no protection against the leads wearing
through and shorting.

my old style battery charger has an overload thermal manual reset
switch, modern ones just shut down electronically (if the leads short
together)

which of course offers no protection against the leads wearing
through and shorting.

Yes, they do, if the leads short the unit stops powering those leads.

But that doesnt do a damned thing about the battery itself being
shorted by those leads.

So add a fuse at each crocodile clip.