Good Morning ... first let me say ... I have looked around the web for an answer to this question. It seems like it will be easy for those that know there way around electrons! Here it is ....
I am in the process of doubling the wattage and battery capacity of my solar charging setup of my overland truck. To that end I am adding a second 100/50 victron smart solar unit to handle the additional four 200w panels (wired per Will in 2x2 series and parallel for 24v). This will work to charge a four battle born 100ah 24v battery bank. Obviously I want to find a setup that is the most efficient /safe/long lasting way to charge the batteries.
My question is ...what is the best way to connect the second controller to the battery bank?
A) Connect positive lead from MPPT #2 to an appropriate sized bus bar to combine it with MPPT #1 .... big cable to the positive battery terminal #1 (first two parallel wired batteries)
Result - Both MPPT's connected to one point in battery bank
B) Wire the MPPT#2 positive lead to the positive battery terminal #2 (second two parallel wired batteries) on battery bank
Result - Two individual MPPT's connect to different points/sides of the series wired battery bank
C) It doesn't really matter .... either way will work the same
I have had issues in the past with lithium batteries having issues with balanced charging. That knowledge prompts this question. Given the cost of the batteries, I want to be sure to set it up properly.
Thanks in advance!
I am in the process of doubling the wattage and battery capacity of my solar charging setup of my overland truck. To that end I am adding a second 100/50 victron smart solar unit to handle the additional four 200w panels (wired per Will in 2x2 series and parallel for 24v). This will work to charge a four battle born 100ah 24v battery bank. Obviously I want to find a setup that is the most efficient /safe/long lasting way to charge the batteries.
My question is ...what is the best way to connect the second controller to the battery bank?
A) Connect positive lead from MPPT #2 to an appropriate sized bus bar to combine it with MPPT #1 .... big cable to the positive battery terminal #1 (first two parallel wired batteries)
Result - Both MPPT's connected to one point in battery bank
B) Wire the MPPT#2 positive lead to the positive battery terminal #2 (second two parallel wired batteries) on battery bank
Result - Two individual MPPT's connect to different points/sides of the series wired battery bank
C) It doesn't really matter .... either way will work the same
I have had issues in the past with lithium batteries having issues with balanced charging. That knowledge prompts this question. Given the cost of the batteries, I want to be sure to set it up properly.
Thanks in advance!
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