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I have enough of these to put up a bunch of panels but I need more of the fasteners. Does anyone recognize what make/model they are?

Can someone help me understand why Battle Born batteries in parallel require 30 minutes of absorb per battery and why not 30 min of absorb per parallel string (especially since the whole bank is only accepting a few amps at most during this time)? Is absorb phase the same as balancing phase...

I’m looking to replace my 24V Magnum MS4024PAE inverter with two of the 4448 (48V) versions (stacked). I will use a 240V generator TBD for charging my bank. What should my inverter setting be for Max Input Amps if I want to charge at the max continuous 60ADC (x2=120A for stacked) and the rest of...