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Hello, I am building a small battery pack and would like to hear the opinions and ideas of the forum. It will provide back-up power for a CPAP along with the usual phone/laptop charging if needed. The CPAP requires 12 volts at a max of 3.14 amps, well within the capabilities of a 18650 pack...

I have a property on a mountainside where the meadow (for a potential ground mount array) faces somewhere between NW and North. While I would really like to move towards at least a partial solar battery system I am not sure if it is worth it. The cabin on the property is small - less than...