vivekgangwar02
New Member
Hi,
greetings!My 12volts 35Ah car lead acid battery was sitting too long and I found it with just zero charge left around 5 6 volts. I peeked into it and saw the cell near to the negative terminal has some white deposits in it, probably it is sulfation (90% sure).
The battery is 30+ months old now. I put the battery on charging with a cheap transformer based charger. I put it on charge for about 48 hours continously.
while the five cells were keep on boiling, but the sixth cell didnt show any movement in the electrolyte inside i.e. it doesnt bubble.
Another thing to note about the charger is, while this process the total voltage of the battery went to 14.75 volts. The Specific gravity of the five of the cells rose from nearly nothing to 1.260 and while the sixth cell didnt had any improvement in this.
I tried adding 1.190 concentrated solution to the cells, and again I tried monitoring, the specific gravity didnot rise a bit.
My concern is if a single cell is not charging, then how the battery is putting itself up at more than 12 volts? (12.2- 12.5 precisely).
I even tried cranking my car up and it worked, I tried monitoring the voltage while cranking and it went to 10.2 volts while doing that.
I am not sure what is happening here, so I am unable to decide if I should replace the battery or should I try reviving it by any other means? I have a solar mppt system installed at my home, should I try charging it with high current? what sense it will make as the other cells are already at their maximum specific gravity?
Thank You in advance.
greetings!My 12volts 35Ah car lead acid battery was sitting too long and I found it with just zero charge left around 5 6 volts. I peeked into it and saw the cell near to the negative terminal has some white deposits in it, probably it is sulfation (90% sure).
The battery is 30+ months old now. I put the battery on charging with a cheap transformer based charger. I put it on charge for about 48 hours continously.
while the five cells were keep on boiling, but the sixth cell didnt show any movement in the electrolyte inside i.e. it doesnt bubble.
Another thing to note about the charger is, while this process the total voltage of the battery went to 14.75 volts. The Specific gravity of the five of the cells rose from nearly nothing to 1.260 and while the sixth cell didnt had any improvement in this.
I tried adding 1.190 concentrated solution to the cells, and again I tried monitoring, the specific gravity didnot rise a bit.
My concern is if a single cell is not charging, then how the battery is putting itself up at more than 12 volts? (12.2- 12.5 precisely).
I even tried cranking my car up and it worked, I tried monitoring the voltage while cranking and it went to 10.2 volts while doing that.
I am not sure what is happening here, so I am unable to decide if I should replace the battery or should I try reviving it by any other means? I have a solar mppt system installed at my home, should I try charging it with high current? what sense it will make as the other cells are already at their maximum specific gravity?
Thank You in advance.