LittleBill wrote:
how often are you replacing water at these 16v charge rates? and what do you guys do when you disconnect the battery's when charging for power?
and how do you guys know when your done with this 16v charge? simply checking the SG?
I've added water 3 times to my screwy31, once when a few weeks old, and twice since then for about 1/3 a gallon total.
I have 3 manual switches, when I want 16v, I switch all the loads to my other battery and crank the solar upto 16v, after a "normal" full charge, meaning it has spent 2+ hours at 14.9v and 1 hr plus at 15.3v and requiring less than 1.9 amps to hold 15.3v.
I've done this enough times that I know it will take right about 6 amps to get it to 16v, and by the time it tapers to around 4.3 amps the SG has maxed out. I've noticed a few times amps at some point start rising again to hold 16v, and then I stop the EQ cycle, as I don't always bust out the hydrometer, even though I should. Mex says the amps rising again to hold 16v is the beginnings of thermal runaway, so the 16v needs to be monitored, or timed, or verified it is required before application.
I basically shoot for 1.285, but when topped up this is lower at just over 1.275, and when the electrolyte level is halfway I've seen as high as 1.290. I've not let the battery get lower than half way.