Re: Solar Kit to run TV, Laptop, Fridge, Mobile or Lights
Your car battery is probably on the order of 80 AH at 12 volts = 960 Watt*Hours...
A small generator running fairly efficiently will give you around 3,000 WH to near 6,000 WH per gallon of fuel.
So--car sized deep cycle battery contains ~1/5th the amount of energy as a gallon of gasoline.
Lead Acid (and really most any battery) does not store a lot of energy vs liquid fuels (gasoline, propane, diesel, etc.)... The advantage to a battery system is that it can be recharged with a solar array... To get ~5kWH from a solar array in decent sun (4 hours a day or more for 9+ months of the year):
5,000 WH * 1/0.52 end to end system efficiency * 1/4 hour minimum sun per day = 2,403 Watt Solar Array Minimum
So--if you want to have 5 days of emergency power @ 5 kWH of 120 VAC power per day (a pretty good sized amount of power)--You would need around 10x car sized deep cycle batteries + 2,403 Watts of solar array + AC Inverter + DC charge controller...
Or a Honda eu1000i (900 watt) or eu2000i (1,600 watt) generator + 5-7 gallons of gasoline.
Of course--The solar power system will continue to crank out power for 300+ days a year (excluding bad weather/deep winter). The genset would need another 1+ gallon of gasoline per day.
This all gets back to your needs/loads... Small off grid solar power systems will only power small loads. Solar power is good where you need 9+ months of off grid power. A fuel powered genset is good for a few days of outages or weekend/seasonal cabin (with possibly a small battery+solar system for a few lights, radio, cell phone charger, etc.).
Batteries start dieing the day they are made... They will last typically 3-7 years or so for golf cart type batteries in normal usage, or just sitting there in float charge... A generator will usually keep for a decade or more if properly stored. Gasoline/diesel will keep for ~1 year with fuel stabilizer (recycle to vehicle), propane will keep "forever".
I highly suggest you look at your needs/loads first... Then start looking for hardware that can meet those needs. Typically "kits" are not as cost effective as DIY--But kits do have their place too.
Just picking out random kits/hardware is probably not going to do much for you unless you are looking for something to charge your cell phone when camping...
20x BP 4175B panels (replacement) + Xantrex GT 3.3 inverter for 3kW Grid Tied system + Honda eu2000i Inverter/Generator for emergency backup.