notevennothing
New Member
- Joined
- Mar 28, 2022
- Messages
- 8
I received and installed four Signature Solar EG4 LiFePOWER4 batteries, along with the six-battery rack, in January and was happy as a clam. I noticed pretty soon that they don't charge/discharge identically. Judged purely through the four-LED SOC indicator on the battery, one battery would achieve full SOC much later than the others. Since this battery was the furthest down on the bus bars, I figured that was the problem, and didn't think much about it because I was working on higher priority stuff.
Nine days ago, we moved in, bringing new loads.
As we added additional loads, I quickly noticed that the bottom two batteries were slower to hit full SOC. In fact, the bottom-most battery no longer hits full SOC at all. All the other batteries fill up, and the inverter/charger switches to float charge, but only three of the SOC indicator LEDs are lit on that one battery. A bit of Googling led me to Will's recent battery enclosure Youtube video where he mentioned switching one of the leads on the bus bars to the bottom. I did that on Saturday morning thinking it would fix all my problems, but haven't noticed an impact.
One factor may have been that I played with my inverter/charger's settings to maximize the life of the batteries according to a post here on the forum. That might have been a mistake. My thinking is that the battery's BMS handles this, and that my modified inverter/charge controller settings may be part of the problem I'm seeing, if not the whole problem.
I'm looking for suggestions. My plan was to hook a Raspberry Pi running Solar Assistant up to the batteries so that I could better see what is going on, and to adjust my inverter/charger's charging curve to delay its switch to float charging. If the problem persists, I will reach out to Signature Solar, but I want to eliminate my own mistakes as the cause first.
Nine days ago, we moved in, bringing new loads.
As we added additional loads, I quickly noticed that the bottom two batteries were slower to hit full SOC. In fact, the bottom-most battery no longer hits full SOC at all. All the other batteries fill up, and the inverter/charger switches to float charge, but only three of the SOC indicator LEDs are lit on that one battery. A bit of Googling led me to Will's recent battery enclosure Youtube video where he mentioned switching one of the leads on the bus bars to the bottom. I did that on Saturday morning thinking it would fix all my problems, but haven't noticed an impact.
One factor may have been that I played with my inverter/charger's settings to maximize the life of the batteries according to a post here on the forum. That might have been a mistake. My thinking is that the battery's BMS handles this, and that my modified inverter/charge controller settings may be part of the problem I'm seeing, if not the whole problem.
I'm looking for suggestions. My plan was to hook a Raspberry Pi running Solar Assistant up to the batteries so that I could better see what is going on, and to adjust my inverter/charger's charging curve to delay its switch to float charging. If the problem persists, I will reach out to Signature Solar, but I want to eliminate my own mistakes as the cause first.