AGM vs Flooded Bulk Times
PT keeps asking whether AGMs will spend more time in Bulk at the same charging rate. I found a good example where that can be measured, using ah64id's test with his PD4655 on his pair of Lifeline...
Forum Discussion
pianotuna wrote:
I guess since the resistance changes the proper term should be impedance.
"Impedance" usually is used with respect to common AC voltages that are changing from, say, 50 Hz on up ... not "slow changing" DC resistances of batteries. The frequencies at which the term "impedance" is usually used are frequencies high enough such that the affects of capacitance and inductance are large enough to be of any consequence.
The slow changing internal impedance of an RV battery under charge does not require use of the capacitance and inductance versus frequency electrical equations.
By the way in electrical engineering, certain AC circuit characteristics are analized by representing a battery as merely a very large capacitor. A capacitor can actually make a "perfect battery" ... you just have to have a large enough building to park your RV next to or trailer to tow behind your RV ... in order to hold a capacitor larger enough to equal the storage capacity of a way smaller and lighter lead acid or lithium battery. But the capacitor energy storage device would have infinite cycle life, could be discharged to zero as much as you want, and could be left in any state of charge as long as you want with no damage - PERFECT!
