Reviving flooded deep cycles
Wanted to share this attempt at getting a little more use out of this battery. We accidentally drained it all the way down to 0.000v. Ive never seen my charger display that before. Even using Pb mode ...
Forum Discussion
Im still trying to wrap my head around 2 batteries in series, powering a light bulb for months, and only 1 battery died.
Now given i have not taken SG measurments. I picture the 2 batteries as 1 single larger battery. Since it was two 8v that are 4 cells each lets call it an 8s battery.
Its so weird how 4 of those cells were drained to zero. While the other 4 were depleted but not dead. While not identical in age and brand they are similar in capacity. I dont know if the voltage regulator and LED lights were still drawing small amounts of power when i discovered the dead battery. Its possible the battery that was drained low was on its way to being completely dead too. But the lights have been on for months. I would have expected 2 dead batteries. Maybe the voltage regular broke and stopped drawing power. Variables
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Actually i was sitting here thinking. I think thats the answer....the voltage regulator. It has a little potentiometer that you turn to adjust output voltage. I bet as the battery voltage dropped, eventually the output voltage got down to zero. Thats why the 2nd battery was not drained to zero.
If it was a standard light bulb i would most likely have had 2 dead batteries? Its still interesting how the 1 year old battery is the battery that drained first. At some point i will have to weight the difference between the newer off brand battery and the old Trojan 8v.
Now given i have not taken SG measurments. I picture the 2 batteries as 1 single larger battery. Since it was two 8v that are 4 cells each lets call it an 8s battery.
Its so weird how 4 of those cells were drained to zero. While the other 4 were depleted but not dead. While not identical in age and brand they are similar in capacity. I dont know if the voltage regulator and LED lights were still drawing small amounts of power when i discovered the dead battery. Its possible the battery that was drained low was on its way to being completely dead too. But the lights have been on for months. I would have expected 2 dead batteries. Maybe the voltage regular broke and stopped drawing power. Variables
....
Actually i was sitting here thinking. I think thats the answer....the voltage regulator. It has a little potentiometer that you turn to adjust output voltage. I bet as the battery voltage dropped, eventually the output voltage got down to zero. Thats why the 2nd battery was not drained to zero.
If it was a standard light bulb i would most likely have had 2 dead batteries? Its still interesting how the 1 year old battery is the battery that drained first. At some point i will have to weight the difference between the newer off brand battery and the old Trojan 8v.
