batteries

  1. Tris420

    How to use a PC fan?

    Hey 420 Friends... I Build a Drying room .. and I am using 1x12V PC Fan ... I thought i could use it with 9V batteries but they only last for like a few hours .. and now i need new ideas on how to use the pc fan ... other than with batteries .. Im a Noob in electrical stuff lol thats why i ask...
  2. S

    Solar Battery Power Question

    Im thinking about switching to solar/battery/power inverter set up for 3000 watts for 12 hours 7-7 (on over night so they charge during the day) How many watts of solar would i need as well as batteries?