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  #11  
Old 03-03-2013
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Re: Charging time and charger output

so basically fast charging is like the de sulfatization setting on some smart chargers? How about rate of discharge? Does running high load devices separately or together matter? In past always tried to avoid running them together if possible. Is that wrong?
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Old 03-03-2013
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Re: Charging time and charger output

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Originally Posted by btrayfors View Post
Good question.

I don't have any objectively verifiable evidence, but from "feeling" and from comments made by battery manufacturers who have collaborated in some of my research I believe there is reason to believe that charging the batteries as fast as they will accept current is good for them.

This may or may not be due to internal bubbling which could help avoid stratification of the electrolyte and, possibly, speed up the process of dislodging loose PbSO4 deposits on the plates.

Maybe MaineSail has a view on this.

Bill
I think having both types of charges available is often best. This can be especially true with thick plate deep cycle batteries where high charge current tends to build surface charges that don't penetrate the plates as effectively as a slow charge will.

The fast charge will "shake" things loose, limit stratification and with good voltage can help to minimize sulfation.

On the other side a good slow charge of a thick plate deep cycle battery is perhaps the best way to get it chuck full and push the charge deep into the plates. Mixing things like wind & solar with high amp charge sources can be a productive way to handle batteries..
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Re: Charging time and charger output

thanks to both you gentle men. you two know what you know.lets just hope I know what I don't know.
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Re: Charging time and charger output

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so basically fast charging is like the de sulfatization setting on some smart chargers? How about rate of discharge? Does running high load devices separately or together matter? In past always tried to avoid running them together if possible. Is that wrong?
It really depends on what batteries you have. Thick plate deep cycle batteries don't tend to deal as well with high loads as other types but this is more of a voltage drop issue to the equipment than overly detrimental to the batteries. Any load above your banks Ah capacity corrected Peukert will result in less Ah than the bank is rated for but a good battery monitor will keep track of this.
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Old 03-07-2013
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Re: Charging time and charger output

You have received some excellent advice from the members here. There is one thing I will mention. Check with the battery manufacturer for charge rates and times. They should be able to supply information such as max voltage and max amps and times. They will also specify an equalization schedual with voltage and amp rates. (Equalization requirements vary between battery types and sizes.)
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