Hello,
I have a 700va Inverter which I assembled 2 and 1/2 yrs back along with a 12v semi-Tubular non-sealed Lead Acid battery which is now 2 yrs and 4 months old. The Inverter uses a readymade pcb which along with the other components I just assembled into the cabin. It works fine but I doubt If I have a problem with my battery. The board came preset with a float charge cut-off voltage of 13.4 which worked fine till 2 weeks back but now, the inverter has started to float pulse more often like in 15secs or so. Previously it was a 2 sec long pulse in some 10-15mts. We took the battery to the dealer but he isnt that expert in servicing and said the battery is just fine and did a steady charge and gave it back to us. It still behaves the same way even after that. So the only problem now is that our electricity bill has went up quite a bit last month due to this useless charging. So now I have reduced the float voltage to 13.1 which gives around 5 mts for the charger to pulse again before the battery voltage drops below 13.1 again, but still Im confused. Is this operation normal for this battery? or do I need to adjust the voltage lower? Is my battery's life about to get over? Since its a semi-tubular, my dealer told it should last between 3-3 1/2 yrs.. now its just 2yrs 4 months. The battery electrolyte is fine, and even the float indicator shows green. I puzzled of why its float voltage went down after running for over 2 yrs. The inverter is never heavily discharged as it has a low cut off at 11v and we never needed to run it to run till it started beeping for low voltage as we have power cuts 2-3 times in a week for abt 1hrs for maintenance, so it is cycled properly for charge/discharge. Any help?
I have a 700va Inverter which I assembled 2 and 1/2 yrs back along with a 12v semi-Tubular non-sealed Lead Acid battery which is now 2 yrs and 4 months old. The Inverter uses a readymade pcb which along with the other components I just assembled into the cabin. It works fine but I doubt If I have a problem with my battery. The board came preset with a float charge cut-off voltage of 13.4 which worked fine till 2 weeks back but now, the inverter has started to float pulse more often like in 15secs or so. Previously it was a 2 sec long pulse in some 10-15mts. We took the battery to the dealer but he isnt that expert in servicing and said the battery is just fine and did a steady charge and gave it back to us. It still behaves the same way even after that. So the only problem now is that our electricity bill has went up quite a bit last month due to this useless charging. So now I have reduced the float voltage to 13.1 which gives around 5 mts for the charger to pulse again before the battery voltage drops below 13.1 again, but still Im confused. Is this operation normal for this battery? or do I need to adjust the voltage lower? Is my battery's life about to get over? Since its a semi-tubular, my dealer told it should last between 3-3 1/2 yrs.. now its just 2yrs 4 months. The battery electrolyte is fine, and even the float indicator shows green. I puzzled of why its float voltage went down after running for over 2 yrs. The inverter is never heavily discharged as it has a low cut off at 11v and we never needed to run it to run till it started beeping for low voltage as we have power cuts 2-3 times in a week for abt 1hrs for maintenance, so it is cycled properly for charge/discharge. Any help?