Woo Hoo..New AGM Batteries
two of the new ones in their workplace, the battery rack last night 7:30pm meter 12.93v lights and fans running this morning 6:30 am (early for us) 12.62v down 65ampHrs from full i set th...
Forum Discussion
landyacht318 wrote:
I find Voltage goosing from float to absorption and watching the amps is very revealing with my AGM. If they quickly taper back to low levels, all is good, if they do not, then the battery was floating at too low a voltage, or not fully charged.
With a ~50f degree battery I found that 13.6v was too low, and a 14.7v spike needed an hour to taper back to below 0.5% of AH(20hr)
Not unexpected, but nice to see theory proven with measurement tools, and adjustable voltage power supply.
Yes, 13.6 is too low for float at 50F.
It is 2:39PM CDST in OKC and I just checked and my 48F temperature AGM is being floated at 14.24V by the MS TS 45 PWM solar controller. That is the beauty of a temp-comp charger. IMHO, no goosing needed.
HTH;
John
