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Old 15-03-2019, 12:36   #16
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Re: When is AGM 100% full charged at Float voltage?

Originally Posted by sailinglegend View Post
I think you have misunderstood Mr Sterling's badly written instruction manual. PS mode is used when no batteries are connected.

PS mode is a permanent Float setting so if you go sailing and come back to 24/7 shorepower the charger will not go up to an Absorption voltage so it will not charge the batteries properly.

If the ProCharge Ultra charger is a model with the red bottom, this goes back approximately 5 years, PS mode is the old BC mode.

BC mode became CEC complaint (California Energy Commission) where the chargers power supply physically turns off when it deems the bank full.

When CEC happened PS mode became the old battery charger mode. They did this for folks who don't want the power supply shutting off, and PS mode still does Bulk, Absorption & Float.

If you want to use a ProCharge Ultra as a constant float device, PS mode will not do that. You'll need to use the custom program menu and set both absorption & float for the same value eg; 13.6V Absorption & 13.6V Float.

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Old 15-03-2019, 15:58   #17
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Re: When is AGM 100% full charged at Float voltage?

I'd be be very surprised if Maine Sail were explicitly wrong in a public post.

Never happened before afaik.

But can settle it straight from the horse's mouth

Charles Sterling <>

also Alan Ferber at Bay Marine, may get back more quickly

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Old 15-03-2019, 18:50   #18
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When is AGM 100% full charged at Float voltage?

I do remember the California mode where the thing turns completely off once the batteries are fully charged.
Itís explained in the manual, I remember I did something programming wise during set up to stop it from doing that. Likely put it into power supply mode, I also use the custom programming because one of its AGM profiles is close to Lifelines recommendations, but not exactly correct.

Why would California want you to cycle your batteries and wear them out faster? How does that help their agenda?

God knows their gas cans are a disaster, causing spillage, which is what they are supposed to prevent, I guess they couldnít stop at gas cans?

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