Hey!
I have learned so much from this forum and the videos, this community is amazing!
I'm planning an off grid system powered with six 540w half/split cell panels in 3s 2p format. The panels are 41.4v and 12.9A each.
Regarding the MPPT solar controller: I can only find solar chargers which have an MPPT range @ operating voltage of up to 115v, or greater than 120v. My issue is that I expect the voltage of the array to be around 100-124v due to some shading in the afternoon. If I take the 120-180v MPPT, will it not charge when there is some shade?
As for the BMS: I'm buying two 24v LifePo4 battery packs with 200 Ah each. The plan is to wire them in series to make a 48 volt battery. Even though I think each of these battery packs has a BMS built into it, I understand that I will need to put a BMS across them. Do I need a 24 volt or 48 volt BMS? (It's the voltage of the BMS for the cells or for the entire pack?)
Thank you so much for your help!
I have learned so much from this forum and the videos, this community is amazing!
I'm planning an off grid system powered with six 540w half/split cell panels in 3s 2p format. The panels are 41.4v and 12.9A each.
Regarding the MPPT solar controller: I can only find solar chargers which have an MPPT range @ operating voltage of up to 115v, or greater than 120v. My issue is that I expect the voltage of the array to be around 100-124v due to some shading in the afternoon. If I take the 120-180v MPPT, will it not charge when there is some shade?
As for the BMS: I'm buying two 24v LifePo4 battery packs with 200 Ah each. The plan is to wire them in series to make a 48 volt battery. Even though I think each of these battery packs has a BMS built into it, I understand that I will need to put a BMS across them. Do I need a 24 volt or 48 volt BMS? (It's the voltage of the BMS for the cells or for the entire pack?)
Thank you so much for your help!