Roosie

iTrader: (8)

I have a normal size 12v car battery Cossie size!

i have a trickle charger that is 500ma and the battery is near flat, how long will it take to charge it fully roughly?

cheers

Mike Kerbey

iTrader: (1)

whats the capacity of the battery in Ah?

Roosie

iTrader: (8)

360

Harris.

I have my 3 door on a trickle charger , my battery went flat last sat so plugged it in and the fully charge light was on sunday afternoon . now i just leave it on there

RobertM

No. that's A (Ampere), you need to know the Ah (Ampere/hour) rating, it's probably 74Ah. Theoretically it would take about 148 hour to fully charge the battery (74Ah devided by 0,5 Ah). But if your battery is REALLY empty (about 0 volt) it will take much longer. A completely discharged battery will not take Amps for several hours. Better to buy a charger that's at least 5Ah.
It will charge the battery 10 times faster.

Roosie

iTrader: (8)

thats ok it can stay on charge all week
dont need to use it for a while

tabetha

Best buy a conditioning charger, a lot of completely flat batteries will not charge at all with normal chargers, a conditioning charger despoite only being some 5 amps or so, will charge much faster than a 25 amp normal charger, they will also recover most dead batteries that a normal charger won't do anything for.,
As said the battery is 360CCA, if it's the one in grey sapph its 54AH, 360AH would be the size of the engine.
Why you not using the big charger on it ?
The formula is as said, but add in 35% wasteage, ie 100AH at 1 amp will take roughly 135 hours not 100.
Dont fast charge at more than 1/3 the capacity, so 20 amps for a 60 ah battery, best is at 10%, maintain at 2%.
tabetha

tabetha

How was the chav with 25PSI, or did the wheels fall off!, did the weather clear at all ?
tabetha