Found a multi meter I’m confused I’m getting 34 volts on a evening sky. What’s going on?
Your HQST panels have some performance numbers on the back. If you wired 4 panels in Series, then the voltage on the wire ends (before connecting into the MPPT Solar Controller should be very near 4 times the V(oc) of a single panel., even under moderately strong sun (without shade). There are many possible problems here.... including (most disastrous) the possibility of 4 times V(oc) exceeding the maximum PV Voltage of your MMPT Solar Controller. Example: If you had 4 panels with V(oc) of 22.0 Volts each, wired in Series to make 88 Volts V(oc), and you plugged that into a "60 Volts maximium" MPPT controller, then you will have fried the MPPT controller. A 36 Volt reading is possible near sundown, very late in the day.
First, tell us the specifications (and preferably the model number) of that MPPT controller. Also whether the SOK battery is "12v" or "24v". Before plugging in the "PV" solar leads, check your PV Voltage on the 4 panels in fairly bright sun. Also check your battery voltage as recently received by you.
Before plugging in those PV solar leads (tape them carefully before you plug them into the MPPT controller; 85-95 Volts is a bit dangerous to mess with). You can plug in your battery(s) to the Solar Controller, but you should then re-program your MPPT charging parameters for charging an LFP battery string (at either "12v" or "24v" nominal). There are many Threads and Posts with advice about setting those charging parameters - search is your friend for that topic.
If your battery is already nearly "full", (e.g., more than "float" charging Voltage on your MPPT), then it might not accept very much power from the Solar array. But your MMPT display should still show the Solar with high Voltage (around V(mp) when charging heavily, or around V(oc) when hardly charging at all), and it should show "battery voltage" at the same value you have measured with the meter.
The only way to "force" your MPPT controller and Solar Array to deliver a lot of power into the batteries is to put a big load on the battery (bigger than the capability of your MPPT in conjuction with that panel array and that amount of sunlight), causing the battery voltage to fall below the value for MPPT's "Boost Resume Voltage". When the battery Voltage has fallen below that value (IIRC, I have my MPPT set at 13.2V), then the MPPT is free to again supply maximum power into the battery(s) and the new "big load" at "Boost Voltage".
That will be either the maximum power of the Solar Array (minus conversion loss of roughly 4-5%), or the maximum output current capability of the MPPT controller operating at Boost Voltage -whichever is lower.