My experience with Interstate and Everstart (WalMart), Ok, My first PUP had a new (within a year old) group 31 Interstate, lasted three years,sort of, I would bring it in the garage during winter and trickle charge it, after the second year it would not survive a four day trip, Third year we camped during fall and had to use the heater, used Genny to charge it up and it was dead by morning, Took it in and Interstate did nothing towards warranty.
Purchased an Everstart at a local WM, group 31, Three years later I sold the PUP and that battery was solid and lasted strong for a four day camp trip with minimal genny charging.
My Bass boat, Bought it had a newish (within a year old) Interstate deep marine group 31, Had a built in trickle charger and I plugged it in when parked at home. 2+ years old and it just flat died on the lake, I was using my fish finder and trolling motor, morning voltage was perfect 13.5, as the day went by it held strong at 12.5, then I was trolling slowly into a good spot and the low voltage warning sounded and it just died,, went down to 10.5 volts.
Interstate would not warranty.
Bought an everstart group 31 Marine deep cycle and it is still going strong five years later..
Current trailer,,, came with two intersate group 27 deep cycle, Lasted just over three years and one completely shorted out in the middle of the night.
Drove 60 miles to the only bog box store (Yep WM) and purchased a group 27 Everstart, They lasted 3 years until I went with solar and two 6V Costco golf cart batteries, The lasting interstate is still my back up boat battery and I sold the Everstart 27 for $25 to a neighbor who's trailer battery died!
So,, Everstart has gotten out of a jamb and Interstate left me hanging,, Now my vehicles.... Always replaced with next size larger Optima and have not had an issue yet!!
