Simi 60
New Member
- Joined
- Jul 10, 2021
- Messages
- 159
As mentioned in another post our 880ah @ 24v of AGM is failing after 5 years of full time use.
840ah @ 24v worth of EVE have been paid for and hopefully will soon be on their way.
In the meantime, trying to keep what we have operational.
Method for the last few weeks is to wake up at 5am, batts will be reading 23.9v on the Victron 702 (individually measured some are 12+v but some are 10+v) and start the Genset smashing in around 90 amps for about 1.5 hours along with doing the hot water system.
Batteries instantly read as 24+v, individually all 12+v and during the charge none get noticeable hotter than the others (shooting with laser thermometer)
During the day 2500w of solar finishes off charge and supplies daily loads
At night when going to bed batts still reading around 24.5v
It has been suggested to charge them up, shut down the system and let rest and then remove the troublemakers and rewire into a smaller 6 batt or even a 4 batt bank of good batteries be it at dramatically reduced ah.
But my way of thinking is that even though the removed batteries were dragging the others down, they do still have actual ah in them and were providing something.
Existing batts are 70 kg each, in a tight space and the cabling, while done professionally is a bit of a maze as the batts aren't flat on floor but shelved up a wall with a very tight squeeze to get past them so I have been a bit loathed to disconnect , remove the troublemakers and rewire
Thoughts?
840ah @ 24v worth of EVE have been paid for and hopefully will soon be on their way.
In the meantime, trying to keep what we have operational.
Method for the last few weeks is to wake up at 5am, batts will be reading 23.9v on the Victron 702 (individually measured some are 12+v but some are 10+v) and start the Genset smashing in around 90 amps for about 1.5 hours along with doing the hot water system.
Batteries instantly read as 24+v, individually all 12+v and during the charge none get noticeable hotter than the others (shooting with laser thermometer)
During the day 2500w of solar finishes off charge and supplies daily loads
At night when going to bed batts still reading around 24.5v
It has been suggested to charge them up, shut down the system and let rest and then remove the troublemakers and rewire into a smaller 6 batt or even a 4 batt bank of good batteries be it at dramatically reduced ah.
But my way of thinking is that even though the removed batteries were dragging the others down, they do still have actual ah in them and were providing something.
Existing batts are 70 kg each, in a tight space and the cabling, while done professionally is a bit of a maze as the batts aren't flat on floor but shelved up a wall with a very tight squeeze to get past them so I have been a bit loathed to disconnect , remove the troublemakers and rewire
Thoughts?