Friends:
I have installed only a few Xantrex XW systems in my career and it has been a long time since the last one. I’ve got one with a problem and I need help, please! I installed a replacement set of Deka flooded, 2 volt, steel jacketed batteries about a year ago. The batteries are not performing well. The customer reports low voltage alarms and generator run time when with the previous batteries this would not happen. Coincidentally I installed an identical set of batteries on an Outback system in the same area at about the same time. After a few hiccups (two premature cell failures and some adjustments in charging parameters) the batteries in the Outback system are performing well. The charge parameters for the two systems are identical. The main difference is the XW system is set to terminate charge based on charge taper and the Outback, without an FNDC, terminates charge based on elapsed time. According to the manual, one is supposed to be able to set the battery AH capacity to zero to allow the absorption cycle to terminate based on max charge time. We would like to experiment with this. However our system will allow only a minimum setting of 50 AH. The firmware version is 1.00. Also, I find it odd that the XW system will allow equalization for only one hour, with no option to change this duration. Am I understanding this correctly? Has anyone experienced any of the occurrences I have cited above? Do I need to upgrade the firmware? The last time I upgraded firmware it took me all day due to how lame the process is. I have the original dongle. Is that sufficient? Any words of advice on the process? Thanks in advance. I hope I am not asking for more help on this forum than is appropriate… William Miller Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com CA Lic. 773985
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