Hey guys, good morning. I know this has been discussed a thousand times so I apologize. I have read so many forum boards on this issue. I want to ask you trolling pros.

So I will be buying a 45-55 thrust TM in a few weeks. I troll around a medium size lake and sometimes run it full blast for around 2-3 hours to move around the lake.

This is the battery I am looking at for $148.42
Duracell Ultra BCI Group 31M Deep Cycle Marine & RV Battery - SLI31MDC at Batteries Plus Bulbs

Duracell Ultra BCI Group 31M Deep Cycle Marine & RV Battery
105ah
12V
Lead Acid: Flooded
Marine Cranking AMPS 800
Cold Cranking AMPS 650
Terminal is Threaded Post SAE/M8
Weight: 59 lbs

I am also looking at their Duracell Marine Battery charger:
Duracell Ultra Marine Chargers at Batteries Plus Bulbs

Your thoughts? I am totally new to this.