Electronics > Beginners
AGM VRLA Batteries and Constant-Voltage charging.
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paulca:

--- Quote from: metrologist on August 15, 2018, 01:20:45 pm ---paulca, did you consider a lithium battery, given your use profile? I think I will try one of those to save some weight next time, but I ride just about every day.

--- End quote ---

I have considered them, but they seem much more expensive.   I'm also fairly sure they have to have some form of charging circuit within them as 14.40V will overcharge 3 cells and undercharge 4 cells.

Also, lithium batteries do not like to be stored full charged and in occasional automotive use the battery will be kept fully charged most of the time.
Benta:

--- Quote from: paulca on August 20, 2018, 09:04:59 am ---What I couldn't understand was how "Constant Potential" differed from CC/CV charging. 

It seems that constant potential IS CC/CV as opposed to constant current charging which is more like a NiCAD/NiMh charger which pumps a fixed current at whatever voltage the battery will take until you stop it.

--- End quote ---

Yes, you can look at it that way. But you mentioned your bike. In an automotive or motorcycle environment, you shouldn't have deep discharge scenarios. Normally the battery will be at 80% or more, which is the CV range.
If it IS in deep discharge (not healthy, most lead batteries don't like this), you need to make certain the battery doesn't absorp excessive amounts of current. Thus the current limiting.
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