Lead weight is about 60 lbs per 100 ah @12 volts. 110 ah = 66 lbs and 430 ah = 258 lbs. If there is space in the original battery compartment for the batteries, I would assume the battery compartment is stressed for the load. I asked Thor MC about that very thing on my factory tours. The guide stated that Thor plant engineering gave the battery specs to MorRide for the battery compartment and MorRide did the design and engineering for that compartment. My coach's battery compartment is stressed for two group 31 12 volt batteries - 136 lbs.
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Jim & Roy Davis
2016 Hurricane 31S
1961 Rampside in tow
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