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Sounds like you are putting the cart before the horse. What exactly are you trying to accomplish?
My trials in solar involved a 100 watt panel and a 300 watt grid tie inverter and I used our home as a "storage" means. Sounds like your deep cycle battery could use a maintenance charge and your insight battery is good for rapid charge/discharge like in an ev project, electric bike, golf cart, etc that has regen braking.
Worse to worse, try the deep cycle and take apart the ima battery and make a 12 volt unit to use.
A PWM isnt as good as a mppt charge controller, but its second best.
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