Calcium battery not charging.

Hello forum,

I installed a couple of the new calcium batteries in the boat about a year ago. They have been great, but now I have a problem and I'm wondering if anyone has had the same or can shed some light on it for me.

I have a dual battery set up with just a simple 0, 1, 2, 1+2 battery switch. Due to a faulty switch battery A was drained down a bit. Not completely flat, enough power to still drive the trim pump ok, but not enough to crank the engine. Battery B was still fine and full.

Yesterday we went out and I noticed that battery A wasn't charging, so with the engine running I turned the switch (ensuring I was NOT going though the 0 position) to battery A only and ran for about half an hour. Still not charging. I checked the alternator output, fine at 14.2 volts. Battery B was charged fully and keep us going for the day.

It there something special about how these new batteries need to be charged or do I have a faulty one?

Thanks for the help,

Chris..............

Re: Calcium battery not charging.

Any takers?

Re: Calcium battery not charging.

Did you measure voltage at the output of the switch? While it may be fine for the second battery, the contacts for the non-charging battery may be bad, or the cables associated with that battery may be bad. Swap battery positions. Or simply have the battery load tested.

Re: Calcium battery not charging.

Chris, being in the caravan repair industry, I fit scores of these cal/cal batteries and they always come back in 6 to 12 months with the same problem - undercharging.

The voltage reg of old does not supply enough voltage to keep these batts healthy, need upward of 15 volts.

Re: Calcium battery not charging.

All battery cables are good, all connections clean and tight, Voltages measured at both alternator output and battery posts... No voltage drops anywhere.

Aldo... I'll have a go at the guy who sold them to me for not telling me this... thanks......... The only problem with 15+ volts is that there are some things (radios, etc) that really are not happy campers with that higher voltage... Oh, well.... back to lead-acids I think....

Chris.........