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RE: Re: Cummins 250? So it's based on current needed for cold weather cranking. Makes sense. The upgrade to a 4-back on the XM757 must have applied to the Pershing missile only, no reference shows it needed for the other versions of the 8x8 trucks. Guess they can get away with dual batt...

Re: RE: Dual vs quad battery packs Yes there were, a separate slave cable kit was provided, but the dual battery set remained the same. May have been a factor later, the TM's from the period all show the dual battery pack with or without the Pershing kit.

Thanks, keep it coming, of course we know the multifuels start immediately, if not sooner, still they added two batteries to the original two on the M656/XM757 trucks.

Some solid arguments for the 4-pack battery systems, please. My XM757 originally came from factory with a dual battery system (besides the fact that it it's a Ford, :wink: engineering figured that two batteries were enough), but a field mod later turned it into a 4-pack. Why are four...