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Hello, I have a Rich Solar 40 Amp MPPT. I cut from their owners manual below. When using the Li battery settings, there are only 3 fields you can adjust. I am considering using "User" to have more control. The problem is, when I look at Will's sticky on LiFePo4 recommended settings I don't...

Hello, I have 2 sets of 4 Fortune 100 amp hour cells. And 2 overkill solar 120 amp BMS’s. While I was in the flat part of the curve charging My cells were at most .003V apart (3mV)! At the very end of the curve when my first cell reached 3.65 V, they were 29 mV apart. I was going to top...

Hello All, I was originally going to use a single ANL Fuse for a 4s2p system, but have been advised to use 2 BMS's to increase Ampacity. As such, I now wonder if it makes sense to use 2 separate Post Fuses (for each parallel'ed battery) or a single ANL Fuse where they connect (or should I do...

Hello, I was thinking of using this as a battery case and drilling some holes in it for wires / airflow / securing to Trailer. And removing most of the foam of course. Do you think this should work? https://www.monoprice.com/product?p_id=12684 Best, Jeff

Hi, Attached I have my BMS Setup, and my complete diagram. I have recently read on the "BMS Common Port vs separate Port" String that Will said, "Considering the likelihood of over voltage situation from most high quality mppt, and the chance of matched LiFePO4 cells going out of balance is...

I have an overkill solar 12 V 4s BMS. I fear that running a single BMS in a 4s2p fortune lifepo4 May be problematic as the ”negative“ wires coming out of the BMS to the load are 3 8AWG wires while my positive wire is specd for a 2/0awg wire. I plan to order another BMS and run 2 4s batteries and...

I recently purchased 8 Fortune LiFePO4 cells that are configured 4S2P. They will be setup like the 7 minute 34 second mark in this video. I bought the following "4S" BMS from Overkill Solar. https://overkillsolar.com/product/bms-120a-4s-lifepo4/ My understanding is that since 2 cells (4...

Hello All, I’ve been lurking for a while and am read to take the leap. I have a new imagine xls travel trailer with “solar prep” (10 gauge wire running from the roof). i attached my wiring diagram (plagiarized from Will’s classic system) and have a couple of questions if someone would be...