PreppenWolf
Solar Addict
- Joined
- Oct 10, 2022
- Messages
- 926
EDITED:
I've made this my build thread, so while there is an OP question below if you keep reading I'm slowly posting updates of my entire system. Mods please feel free to move if desired.
System summary:
(2) EG4 6500s for 120/240V config.
(40) Hyundai 390W panels in 10s4p to stay under 500VDC EG4 limit but attempt to max out amps, roughly 15kW.
EDIT NOTE: Due to discussion in another thread, specifying my strings are in fact 10 panels, and my VOC was tested and verified to be be roughly 440V BEFORE I wired my system. My panels are not hitting the ideal voltage values labeled on them. When building your system it is critical you ensure your VOC does not exceed the 500V limit of a 6500EX inverter or you will let out the magic smoke!
(8) banks of 16s LiFePO4 BYD 260ah cells run on (8) Overkill 16s 100A BMS
Separate load center for this setup isolated from my grid panel.
I'm basically following Will's EG4 setup, only with my own batteries. My intent is to charge the 8 banks using the system to "100%" then pull them one bank at a time from system to top balance with a separate DC charger and then reinstall. I know I need to setup the EG4s Setting 05 to USE. And then pick settings 26, 27 and 29. I'll also need to program the Overkills. Once everything is top balanced my intent is to cycle with 5% to 95% limits. I will not be moving any loads from my grid panel to offgrid panel other than a quad outlet for load/sanity check testing each leg until after I top balance all banks.
So my question is what does everyone think I should use for setting up the charging limits for the initial full charging (pre-balance) to get them as close to max as safely possible, and then later for use on both the EG4 and the overkills once all 8 are top balnced and I move into regular use? I'm probably 2-3 weeks from turning the system on. Really appreciate input here.
Dec 2022 - 127kWh (system offline for work 9 days)
Jan 2023 - 141.2kWh
Feb 2023 - 449.7kWh (Eastern trees removed)
I've made this my build thread, so while there is an OP question below if you keep reading I'm slowly posting updates of my entire system. Mods please feel free to move if desired.
System summary:
(2) EG4 6500s for 120/240V config.
(40) Hyundai 390W panels in 10s4p to stay under 500VDC EG4 limit but attempt to max out amps, roughly 15kW.
EDIT NOTE: Due to discussion in another thread, specifying my strings are in fact 10 panels, and my VOC was tested and verified to be be roughly 440V BEFORE I wired my system. My panels are not hitting the ideal voltage values labeled on them. When building your system it is critical you ensure your VOC does not exceed the 500V limit of a 6500EX inverter or you will let out the magic smoke!
(8) banks of 16s LiFePO4 BYD 260ah cells run on (8) Overkill 16s 100A BMS
Separate load center for this setup isolated from my grid panel.
I'm basically following Will's EG4 setup, only with my own batteries. My intent is to charge the 8 banks using the system to "100%" then pull them one bank at a time from system to top balance with a separate DC charger and then reinstall. I know I need to setup the EG4s Setting 05 to USE. And then pick settings 26, 27 and 29. I'll also need to program the Overkills. Once everything is top balanced my intent is to cycle with 5% to 95% limits. I will not be moving any loads from my grid panel to offgrid panel other than a quad outlet for load/sanity check testing each leg until after I top balance all banks.
So my question is what does everyone think I should use for setting up the charging limits for the initial full charging (pre-balance) to get them as close to max as safely possible, and then later for use on both the EG4 and the overkills once all 8 are top balnced and I move into regular use? I'm probably 2-3 weeks from turning the system on. Really appreciate input here.
Dec 2022 - 127kWh (system offline for work 9 days)
Jan 2023 - 141.2kWh
Feb 2023 - 449.7kWh (Eastern trees removed)
Last edited:
