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https://hqsolarpower.com/400-watt-12-24-volt-polycrystalline-solar-panel-kit-with-40a-12-24v-mppt-solar-charge-controller-20ft-12awg-panel-and-controller-connector-cables-z-brackets-lcd-display/ My plan is to get another mppt controller and make two 24V - 200W systems out of it. Each system...

When reading about wire for 12V, 24V, and 48V DC circuits, I almost always see folks using "Battery Cable" or "Welding Lead Cable". I know that these cables are very flexible and can carry a lot of amps for their size. However, I have several spools of 10AWG - 19 Strand THHN (PVC inner...

Thinking about getting a 24V 60Amp PWM Charge Controller as a backup to my MPPT controller. My Battery Bank is 24v-96ah LiFePO4, 2s6p. Battery mfg recommends 14.4v-14.8v charge voltage with 10A charge current per 12v battery ==> 28.8v-29.6v charge voltage with 10amp charge current per 2s-24v...

I now have a 24V x 96Ah Battery Bank: 12 x 12V x 16Ah LiFePO4 batteries wired in a 2S6P configuration. Also, for this battery bank, I have 6 x 250W Panels: Vmp = 30.3V, Voc = 37.6V and Imp = 8.27A, Isc = 8.85A. My plan is to wire them 3S3P for 90V x 16.5A nominal to the charge controller...

I plan to use two 12v Deep Cycle AGM batteries in series for 24v system. If the batteries are rated for 30Ahrs each, I believe that means that I can still get 30Ahrs at 24v, yes? Also, what will be the typical state of charge (SOC?) when/if I hit the 30Ahr? 50% charge? I "assume" -...

Please see the attached Schematic-Photo. Should all be self explanatory. Questions: 1. What size should my MPPT be? 2. Can an MPPT be "Oversize" electrically, or is that just an excessive cost thing? 3. How to properly connect the 24V marine alternator/engine to the system? - Should I wire it...

Want to double up on 8AWG wire to carry 24v-100A to inverter. These are essentially two parallel conductors. Assuming I want 100A total fusing, can I use a 50A Maxi Fuse in each 8AWG wire? Each 8AWG wire will be same length and same connector on each end. My gut tells me the answer to this...

Hello Everyone. I'm not a complete newbie to DC systems, but new to "Off-Grid" type systems. Let me start off with some basic comments: 1) I have a family member that is T1D (Type-1 Diabetic), and their insulin must be stored in cool box (ice-chest or refrigerator). 2) We live in an area...