Multimeter usage

[maxfax]

Yeah this battery is old. Its at least 5 years old, (length of time I saw it in the previous vehicle before I acquired it) and a reman at that.

That is a pretty good battery if that's all the more it has lost over the years...  Sounds like wiring the tach to switched power fixed you right up..

[8v-of-fury]

Actually Brett.. The battery tests at 12.50V even after sitting all night.. And its almost 0C (32F)

[mtrans]

The battery tests at 12.50V

This don`t show capasity Ah,I did 1 year game with bat shop,they say that 13.5V show bad alternator and I say it`s because bad aku,so did test I write and my alt show 14.4 (w/o aku).Even company man say that is alt.So tomorow I bring bady GOOD aku did my test again  on him and I get 14.1V that shat his maunth.
Result i get NEW one.
To be shure you need A metar till 50A to measure curent charge from alt,and also V drop till you grank/glow.

[maxfax]

Tis true..   To get an accurate test of a battery you need to put a load on it..   But of course if it only charges to say 10v, it's crap anyhow..

[8v-of-fury]

I see I see.

Well that's ok. Brother is doing his apprenticeship at a shop in town, and gets shop prices on parts.. So were both gonna get some huge truck batteries at shop cost

[mtrans]

how about temp?EU standard EN 50342

[8v-of-fury]

What do you mean by that?

[8v-of-fury]

Oh sorry, couldn't see the picture on my phone! lmao

Well it won't be -18c for a while hopefully... lol

We want it to be 7.5v after 10 seconds of cranking? Is it bad to be higher?

[maxfax]

Not at all...

[8v-of-fury]

So had to do another amperage draw on my brother car.. seems he was having a decharged battery after sitting too.. He has a draw of 0.15a on the fuse box main power wire, but pulling every fuse and relay one at a time does not make the draw change at all...

What in the world could be causing this draw?

[ORCoaster]

Something tapped directly to the power line that is not on a fuse?  Poor isolation of ground to power?  Like those rubber grommets some used that eventually wear away and make some kind of contact or worse occasional contact.

[mtrans]

0.15 A is very little,for good aku it`s nothing,but you can pull out + or - from aku if it`s OK for you.