100 Proof
"Please Lord, don't let me do something stupid."
- Joined
- Feb 14, 2021
- Messages
- 206
I have a Morningstar Tristar-MPPT-45 solar charge controller that allows a user to set a DIP switch to only allow equalization by manually holding a button for 5 seconds. The equalization function itself is programmable for both voltage and duration. Much like the normal bulk/absorption functions, it allows for bulk charging at full amps until it hits a voltage limit, and then will hold that voltage for a user defined time. It also allows for a max time in the equalization state in the case where the target voltage is never reached.
I am contemplating setting my bulk/absorption/float functions to bounce between approximately 10%-ish to 85%-ish capacity to extend cell life, but from reading these forums I believe there is potential value in topping up further into the knee of the charge curve periodically, perhaps every 6 months or so. It seems to me that rather than reprogramming my SCC to do this, I could set my equalize function to go to, say, 3.6V/cell for 15 minutes when manually commanded to do so.
My bank (still waiting on cells) will be 2P4S, 460AH EVE cells. My solar array is 465W.
I would value input and a discussion on the pro & cons of this scheme before I move forward with it.
Thanks in advance!
100 Proof
I am contemplating setting my bulk/absorption/float functions to bounce between approximately 10%-ish to 85%-ish capacity to extend cell life, but from reading these forums I believe there is potential value in topping up further into the knee of the charge curve periodically, perhaps every 6 months or so. It seems to me that rather than reprogramming my SCC to do this, I could set my equalize function to go to, say, 3.6V/cell for 15 minutes when manually commanded to do so.
My bank (still waiting on cells) will be 2P4S, 460AH EVE cells. My solar array is 465W.
I would value input and a discussion on the pro & cons of this scheme before I move forward with it.
Thanks in advance!
100 Proof