callmeburton
New Member
- Joined
- Mar 4, 2022
- Messages
- 265
Was originally thinking I wasn't going to need to post about this because the voltages were 3.4 when I first noticed this.
I have my batrium setup to do ramped charging dropping the requested amps starting at 85% SoC to 15, 90%/6a, 95%/2.4a, 97%/0.6a respectively. This was done with the idea of doing even less harm over time to the batteries while topping off.
What I have noticed is the Batrium will reach bypass voltage (3.5) on all cells and reset the SoC to 100% then then voltage will creep down overtime like there is a parasitic load on the battery which isn't accounted for while still showing ~100% SoC. What took the cake this morning was the voltage reading down as low as 3.31 and knowing the actual voltage is likely 3.28/9 at the cell while the Cap Empty (or remaining capacity) is sitting at 279.5 amps :/
Thoughts on what is going on here? Wire diagram here for this setup, everything using DC negative should be terminating north of the battery on the shunt https://diysolarforum.com/threads/i...bank-and-sma-si-load-center.52698/post-707395
I have my batrium setup to do ramped charging dropping the requested amps starting at 85% SoC to 15, 90%/6a, 95%/2.4a, 97%/0.6a respectively. This was done with the idea of doing even less harm over time to the batteries while topping off.
What I have noticed is the Batrium will reach bypass voltage (3.5) on all cells and reset the SoC to 100% then then voltage will creep down overtime like there is a parasitic load on the battery which isn't accounted for while still showing ~100% SoC. What took the cake this morning was the voltage reading down as low as 3.31 and knowing the actual voltage is likely 3.28/9 at the cell while the Cap Empty (or remaining capacity) is sitting at 279.5 amps :/
Thoughts on what is going on here? Wire diagram here for this setup, everything using DC negative should be terminating north of the battery on the shunt https://diysolarforum.com/threads/i...bank-and-sma-si-load-center.52698/post-707395