Bargain lithium battery.

[Robmac]

Told you that electrical knowledge is limited, Merl - bright as a glow worm's armpit when it comes to this topic ... . But I do understand syntax, which is more than the BBC sports journalists do - they report that Garnacho was fined for 'speeding to Liverpool Crown Court' which would require 2 prosecutions - one for speeding when leaving the Man Utd Training Ground, and a second for speeding to Liverpool Crown Court ...

Steve

Akin to Jeremy Thorpe's Memoir about his career as an amateur boxer - 'My Hammerings in the Ring'

Steve

When I worked in IT for a bank Steve, a girl in our office appeared in one of the well known porno mags from back in the 80's.

Our manager at the time had it reported to him and he called her in as a disciplinary matter. Apparently he said to her, "You can't deny it because I recognise your ring". (she had a rather distinctive engagement ring)

 

[MERL]

When I worked in IT for a bank Steve, a girl in our office appeared in one of the well known porno mags from back in the 80's.

Our manager at the time had it reported to him and he called her in as a disciplinary matter. Apparently he said to her, "You can't deny it because I recognise your ring". (she had a rather distinctive engagement ring)

I like the story that Greg Davies the comedian quotes from when he was a school teacher. I can't remember the exact details but one of his older female students was angry with an object or was trying to get an object to work and she was hitting it repeatedly on a school table. Greg intervened and said "whoo whoo stop doing that Emily....how would you like it if I banged you against a table".

 

[Geek]

you know exactly what 2.5mm cable is

I honestly don't. That's why I asked. 2.5mm cross section would be ludicrously small for high current applications.
I've never seen cable described by radius or diameter, so I am still baffled by what size cable you are referring to.

 

[Geek]

you could safely use 10x the a/ah output of the charger without any risk of overload

That was probably before the days of Chinese specifications.
However, the chances of damaging a charger by connecting a huge battery are homeopathic.
The issue is that the charger will probably stop charging long before the battery is full, if it detects fullness by time.
Alternatively, some chargers detect the charge current dropping as an indication of fullness, and with a big battery, that may never happen.

 

[MERL]

I honestly don't. That's why I asked. 2.5mm cross section would be ludicrously small for high current applications.
I've never seen cable described by radius or diameter, so I am still baffled by what size cable you are referring to.

2.5mm CSA.
Good for around 12A as long as you don't bunch it with loads of other high current cables or run it through insulation as you're probably well aware.
My point around mentioning 2.5 mm cable was that (according to what I reckon will happen) is that after you choose a required maximum current ( let's say 50A)
You choose a cable that's good for 50A but DON'T go oversized.
This would be 10mm cable
With the battery at a SOC of 5% you add sufficient cable length to restrict the alternator charge current to 50A.
The current will now flow at 50A and gradually get lower as the battery charges and it's terminal voltage rises. So no danger of cables burning out or alternator damage while above 5% charge.
Now, let's say for example this total cable length required is 20metres total, in both the positive and earth return so 10m in the positive and 10m in the neg. It's my notion that if you substitute the 20m of 10mm cable for 20m of 2.5mm cable the additional volts drop of the 2.5mm will automatically restrict the current to a level that's safe for 2.5mm cable and current will be close to 12A.
This is the magic distance I was referring to, at this distance (or greater) you simply choose the charge current with cable size and everything falls into place, you could use 1mm and you'd get a 5A charge, use 16mm and you'd get around 80A.
It'll all probably fall flat on its face due to voltage sag at the alternator and the fixed resistance in the short length of wiring/fusing between alternator and starter battery along with the variation in overpotential with changes in current but it'll be interesting to see.