I also wonder about the strain of pulling 50 amps from my batteries. In addition to minimizing use, I would not want to pull high amperage. I use Lifeline AGM batteries and would like to prolong their life. The cost of 2 batteries of the size I use is just short of $10
Actually,it's 44.9 amps when converting 539 watts at 12 volts to amps..Having said that,a 40-50 lb thrust trolling motor draws anywhere from 40-50 amps and deep cycle batteries are recommended for them as well as the Battle Born Lithium..
A deep cycle battery is called upon to deliver a long, slow discharge of fewer amps for several minutes or hours to run a trolling motor. In this case, the power comes from deep within the plates, not merely off the surface as in a starting battery. Therefore, deep cycle batteries are specially engineered with heavier, thicker plates with fiberglass reinforcement, special power-producing active material and special heavy-duty separators. With these features, deep cycle batteries can withstand the potentially damaging effects of continual deep discharge and recharge. Therefore, they are the best choice for trolling motors and also the most used batteries in RVs or solar power systems where there are many heavy-load appliances or accessories that need power from batteries
