What kind of gauge would I need...

[stormwardenx]

To show how much power is left in my battery?

And if such gauge exists...is it hard to install?

[Brett_J]

Voltmeter/Ampmeter depending what you want it in
They came standard in a fair few cars

Easy to install

[Wilko]

Goto Jaycar or Altronics. They are cheap as.

[TTZ]

a voltmeter will show you if your car is charging as it should and what voltage you have in reserve with the engine off, but to test the life of your battery I belive you need a hydrometer (not available as an in car guage) because a battery may show 12V but still drop down to 6V when given a load

[pazrs]

a voltmeter will show you if your car is charging as it should and what voltage you have in reserve with the engine off, but to test the life of your battery I belive you need a hydrometer (not available as an in car guage) because a battery may show 12V but still drop down to 6V when given a load


It will never drop that low, even under cranking it should probably be above 10ish. Expect around 13.4V with the engine running and a health alternator.

[joshg123]

a round one

[pshrdeta]

It will never drop that low, even under cranking it should probably be above 10ish. Expect around 13.4V with the engine running and a health alternator.



Engine running expect more like 13.6 to 14.3

when cranking it may drop to ten volts, any lower and you have an issue with battery or starter

[devilfish]

to answer the original question, there is no lead acid equivilent of a remaining charge meter.. you can only really measure its voltage and current draw.. why do you want to know the capacity?

[TJ]

Hes banned so who cares?

[SLEEKA]

i care, i want to know if you can get one with a shift light... :D