Since the voltages are adjustable in "user", between trips you can pick the same voltage for absorb and float. Then the timing doesn't matter.
Smk is always asking about that time in absorb! :)
The "default" charging profile is the standard EP Solar one I had a couple years ago in the LandStar with that two hour fixed absorb time. The RN series has that too. This new BN series brings the "user" feature plus an extra 50v from 100Voc limit to 150Voc limit.
Trolling eBay.ca, I found the 40a, 4215BN with the MT50 remote and cable for $285 (Can) free shipping.
Don't know the price for a BN 20a, but a 20a RN with remote was $165 free shipping. A 20a Eco-Worthy is still about $100 but has 42Voc limit vs the 100Voc in the RN.
