I use the X2 battery and it's a beast.
X2 Power (X2Power Premium AGM BCI Group 27F Car and Truck Battery - SLI27FAGMDP at Batteries Plus Bulbs - https://www.batteriesplus.com/product-details/auto_light-truck/battery/x2power/sli27fagmdp)
It's got a 4 year non-prorated warranty. Meaning you get a...