It is a nice controller, but I'm not sure it solves any of the problems that you've expressed with the model you own now.
Problem 1: The load terminals (and USB output) shut off when in voltage recovery mode, and the USB port is always 100% powered by battery.
The Genasun controller doesn't even provide load terminals, and offers no protection against over-discharge. If you just moved your load on the cheap PWM controller from the load terminals to the battery terminals, you cut all the goofy load control logic out of the picture (as Genasun has done).
Problem 2: Your controller has no ability to limit charge current to 0.5C, or even limit charge current to within the rating of the controller.
The Genasun is mppt, and is probably smart enough to limit charge current to the rated output by moving off of the maximum power point with the charge current rating is reached. However, it offers no ability to further reduce the maximum charge current, so that if you are using a battery that can only take 1.4 A, you are still at risk of hitting it with more than that. In fact, the Genasun is slightly worse in this respect, because as an mppt, it would convert your 100 W to 100 / 12 = 8.3 A, instead of the ~5.5A Isc that the PWM controller would pass from a 100 W panel (under STC conditions).
I think "The Kid" by Midnite Solar offers all the functionality you are looking for (and more), but at ~$300, you'll need a few pennies to get there.
Problem 1: The load terminals (and USB output) shut off when in voltage recovery mode, and the USB port is always 100% powered by battery.
The Genasun controller doesn't even provide load terminals, and offers no protection against over-discharge. If you just moved your load on the cheap PWM controller from the load terminals to the battery terminals, you cut all the goofy load control logic out of the picture (as Genasun has done).
Problem 2: Your controller has no ability to limit charge current to 0.5C, or even limit charge current to within the rating of the controller.
The Genasun is mppt, and is probably smart enough to limit charge current to the rated output by moving off of the maximum power point with the charge current rating is reached. However, it offers no ability to further reduce the maximum charge current, so that if you are using a battery that can only take 1.4 A, you are still at risk of hitting it with more than that. In fact, the Genasun is slightly worse in this respect, because as an mppt, it would convert your 100 W to 100 / 12 = 8.3 A, instead of the ~5.5A Isc that the PWM controller would pass from a 100 W panel (under STC conditions).
I think "The Kid" by Midnite Solar offers all the functionality you are looking for (and more), but at ~$300, you'll need a few pennies to get there.
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