domino
Well-Known Member
Just get the mf31.
Just get the mf31.
Yes, that sounds about right. Remember not to cook an old-style fully lead battery though - they're pretty rare now though as the calcium ones have a much better shelf life.
If his set point is wrong he'll just kill it.
RangeRoller dt
Well-Sprung Member
Battery may be okay it’s the regulator he needs.
Datatek
Well-Known Member
I have 3 of them, best battery around and Hancook actually make them, they are not just a branded product as so many batteries are these days.
Datatek
Well-Known Member
14.7 volts is the minimum for a lead calcium battery 14.8 is optimum, they will stand 18 volts for short periods which some of the latest alternators output to cover recharging in vehicles that just do short runs.
lazbaz
Member
So it is imperative for me to get the alternator to deliver 14.8 V?
Otherwise the battery will die quite quickly?
Datatek
Well-Known Member
14.5 volts minimum, 14.8 optimum needed in order to fully charge a lead calcium maintenance free battery. Kept in a low state of charge, they die quite quickly. All mine are on solar chargers when parked.
Jon Dor
Well-Known Member
As above.
Had mine since Nov 2016 and never let me down. Bought two more for Jondor's 21ltr, straight-8 Gardner 8L3B.
A battery will start to sulphate at ~12.4v and below
Datatek
Well-Known Member
I think you will find that depends on the battery chemistry, there are many different types including deep discharge types, AGM, Gel etc
Happy to stand correctedI think you will find that depends on the battery chemistry, there are many different types including deep discharge types, AGM, Gel etc
lazbaz
Member
What is low state of charge? Battery terminal voltage down to what, 12.5V,12V,11.5 or lower to what voltage before it will not recover?
RangeRoller dt
Well-Sprung Member
11.something they say its permanently deaded, although there is an expensive bit of kit that some garages have that may be able to cycle it back to life.
Datatek
Well-Known Member
It varies depending on battery chemistry, but 11 volts for a lead calcium battery is dead and it may or may not recover.
