Trojans's group 24 27 or group 31 are rated at only half the total cycles as their t-105 or t-1275 legitimate deep cycle batteies. They are top quality marine/rv trolling batteries but their plate thickness and construction is no where near the same as their industrial lines of true deep cycle
But I guess 'true deep cycle' is now subjective.
Sams club or costco gc2s will likely double the cycle life of 2 group 27 trojans in the same usage, and at a fraction of the price.
The difference is the trojan 27s will have much higher CCAs to still start an engine when depleted.
A deep cycle sticker does not make a deep cycle battery
Be smarter than the marketers
