Lead Acid (PB) Batteries HELP !

[Justingt5]

Hi,

I have just got a new leisure battery for my caravan and was searching for info on charging rates so I can use my Lipo chargers PB setting to charge it up.

I am a bit confused by some the info I have found online so I am looking to people in the know to help me clarify!

Some info says that 13.9v is fully charged others say 14.4v is fully charged and my charger when set to 12v6p says the end voltage (full) is 14.7V???

The battery is a 12v 110ah c20 Numax leisure battery.

Info i found says I can charge at 10amps which seemed very high so went in at 7 to be careful. Also my charger has a setting to tell it the capacity in MAH which would be 110,000 right?? I left it at 11k to be safe.

Looking for any clarification on these points, its like learning about lipos all over again LOL

[kjrell]

Lead acid charge rate is usually 1/5 C, so 22A in your case, lower is ok too

Fully charged battery will reach 14.4v at around 25°c ambiant temp.

14.7v is ok for lower temps, and 13.8 for higher temps.

Hope it helps!

[Justingt5]

Originally Posted by kjrell

Lead acid charge rate is usually 1/5 C, so 22A in your case, lower is ok too

Fully charged battery will reach 14.4v at around 25°c ambiant temp.

14.7v is ok for lower temps, and 13.8 for higher temps.

Hope it helps!

OK thanks, so if the ambient temp is around 22c and the battery is reading 14.56v on my multimeter do I consider that full, as the charger is still going??

[kjrell]

Yes, if you want to be safe, but reaching 14.7v will not harm it anyway.