Part of the problem with Solar is that your 24v batteries can be anywhere from about 22 volts to nearly 29 volts, depening on the state of charge of the batteries. That can be OK if all your equipment is OK to work in that voltage range, but it's usually better to have regulated power output to the radio gear.
We do Solar on some of our towers, and we use the Current-Logic.com DC-DC Converters with excellent results. We typically use the 'non-isolated DC-DC converters' and they are cheap and reliable very efficient (very little loss in heat) and they are and exactly on target with voltage and amperage.
That way too - as your batteries charge and discharge, they might be anywhere from 21 to 29 volts coming from the Solar Charge Controller - but these DC-DC convertors can keep their output at exactly 18v or 24v or 30v or 48v or whatever you want. PLUS - we have places with 24V wirleess gear, and 12V DC Ethernet swtich, so two little converters and everything can be happy as the batteries vary from 21/22 to 28/29 through a night/day cycle.
El compañero ninedd esta comentando sobre eso exactamente. Los convertidores DC-DC que utiliza y recomienda (http://www.current-logic.com/dcdc_converter_car.php) pueden tener variaciones de voltajes en la entrada, como es caracteristico de un sistema con baterias, pero logran mantener una salida estable de voltaje y corriente.
Hi all and thank you for support and some new insights.
I have ordered Current-Logic.com DC-DC Converters and will se how it goes but as some of you proposed Netonix is probably a way to go if I add more APs on same place with added switches/routers and security cameras. One again thanks for support and I will keep you guys informed how things go.