Would this make an acceptable house battery?

[stuntman mike]

I got this big telecom backup battery for helping a pal in his warehouse. It took a charge and I took it home. I was planning on putting it in the van for a house battery. Does anyone see a problem with charging this off a 125amp alternator via relay?

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[stuntman mike]

GNB Marathon M12V155FT Battery Features

• Design life in years: 12 @ 20°C
• Nominal capacity: 157 Ah @ 25°C
• Patented "Diamond Side-Wall" Design to maintain structural integrity in higher operating temperatures
• Carry Handles
• Superior Lead-Tin-Calcium-Silver Positive Alloy helps resist corrosion
• Maintenance-free (no topping-up)
• Special high current performance
• Higher Vent Opening Pressure to avoid unnecessary gassing. The one-way self-resealing device tested and proven to maximize battery life
• Integrated Flash Arrestor, ultrasonically welded into the cover for secure and safe protection

Marathon M12V155FT Specifications

• Length: 22 (in)
• Width: 4.33 (in)
• Height: 11.15 (in)
• Weight: 119 lbs
• Terminal: Heavy Duty Threaded (M6) copper alloy
• Short Circuit Current Amps: 3883
• Internal Resistance: 3.0

Source

 

[shade]

If you build an enclosure, you may want to oversize it enough to accept a pair of GC2 or Group 31 batteries in the event that you don't want to spend the money on an exact replacement. Add spacers for the Marathon.

 

[john61ct]

Fine to use since you have it.

Does not mean designed for, ideally suited for deep cycling, but yes if it proves to be within 80-90% of its rated capacity may well last a few years if treated well.

 

[Peter_n_Margaret]

It will work, but being a wet cell it would not be my choice. My experience with wet cells for both crank and house use is that too many rough roads shake them apart internally and they fail prematurely. Make sure that it is sealed to the inside of the vehicle and vented to the outside because when it fails with a 100A plus charging source available it may well vent explosive gasses quite vigorously.
Cheers,
Peter

 

[pluton]

It will work, but being a wet cell it would not be my choice. My experience with wet cells for both crank and house use is that too many rough roads shake them apart internally and they fail prematurely.

Yes, its intended use is to sit in the basement of telephone switching building waiting for the weekly test and, in case of mains failure, to sit in the switching building basement and provide power to the landline system while the emergency generator comes up to speed. Being moved a lot, jostled around, and vibrated is most likely not in its design specs.