I think you want a generator. I don't know how warm it is where you are but without AC of some kind you can't run an air conditioner or use the microwave, TV etc. Depending on how long the neighbor is gone you might make it a couple/few days on the existing batteries but after that it's "lights out".
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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