I've seen a depleted partially sulfated flooded group 31 suck way more than 17 to 20 amps when the charging source is seeking 14.4. In fact it maxed out my 40 amp charger for quite a while before attaining Absorption voltage.
if my flooded 100Ah battery reached absorption voltage of 14.4v+ with just 17 amps, it either is above 80% charged, or is heavily sulfated.
The Wfcos are notorious for never seeking 14.4v, and charging slowly, and failing prematurely.
I removed one from a neighbors RV, replaced it with an Iota dls-45. He is a battery abuser but claims he now always has enough power for overnight with just his generator to recharge where with the Wfco the batteries were always struggling..
I have taken its heatsink and fan, the 80mm Addo fan now with relubed sleeve bearing is exhausting my electrical cabinet at a reduced rpm from a Noctua inline resistor cable, and amp draw of only 0.04a.
A clamp on Ammeter is a wonderful tool, as long as it measures DC amps. Many will say AC/DC but only measure AC amps.
https://www.amazon.com/Uni-T-UT210E-Current-Meters-Capacitance/dp/B00O1Q2HOQ?ie=UTF8&dpID=41PBH46KmzL&dpSrc=sims&preST=_AC_UL160_SR160%2C160_&refRID=17NS2HT4J7CBCEWYAAKF&ref_=pd_sim_sbs_469_11With this clamped over one wire from Wfco or at the battery, one no longer has to guess. But expect to be dissappointed with the number you see flowing into batteries when the Wfco is the charging source.
"I'm running a generator for 8 freaking charging amps!!!!!!! WTF!!!! ArGHHHHHHHHHHHHHHHHHHHH."
