I am charging a 26 Ah battery with a solar charge controller. The battery's manufacturer recommends charging with 0.1C. Which charges the battery at 2.6A during bulk mode. That is what I was going to charge with initially but I realized that for solar applications that will take up too much time so now I will charge with 5.2A (0.2C) which is lees than the recommended maximum charging current limit.
SO the question is what effects in terms of the battery's life cycle/lifespan does charging with 0.2C have over charging with 0.1C. The datasheet of the battery is attached below.