one battery bank electrolyte low
Hi Folks,Looking for some advice on my new issue.
I have a 13 year old off grid 4k system with a Xantrex SW4024 system and a C-Series DC controller model 40 as I remember. I have 8 6V Trojan L16 batteries.
This is in the Eastern Cascades of eastern Washington and I get there usually every 4-6 weeks as its a retreat. Sometimes its longer up to 2 or so months and I've had no problem. I top the batteries before I leave and so on.
I was recently over there after nearly 2 months and things seemed to be working fine, all the lights worked and the microwave worked fine., I used it intermittently. I got ready to prepare my place for leaving and checked the batteries and one bank was so low I used nearly 3 gallons of distilled water to top them off. I was totally shocked as Id never experienced anything as severe as this.
They lit back up as soon as I topped them off again but thee seemed to be a lots of charging activity going on even though my monitor said the batteries were full.
Now my first suspicion is that there is some faulty interconnects between the two banks and what might be the problem and seemd one was receiving more current than the other. I figure next time i head over Ill have to disassemble and reassemble the system. I am also being pushed by my wife to replace the batteries before winter as they are now 7 years old. I did shutdown the whole system while gone for the next few weeks.
I thought that the controller would protect the batteries from overcharging and wanted to see about some getting expert suggestions and opinions on what I am experiencing.
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