Solar Powered

i'm making weather station needs solar powered.
currently using yun, dallas 1 wire temp , other sensors don't use power. 
currently have battery http://www.voltaicsystems.com/v15 small cheap solar panel.  test did far using yun , temp sensor.  on sunny day battery went 4 bars (full) down 1 bar.  doesn't seem  setup cut it.

i have been eyeing kit, seems expensive.
http://www.voltaicsystems.com/12-watt-kit
specs:

quote

v44 usb battery

    capacity: 12,000mah, 44 watt hours
    output: 5v/2a , 5v/1a usb (2 outputs)
    input: 5-6v, 1a
    battery type: li-polymer
    protection: short circuit, on charge, on discharge, on current, on temperature

- see more at: http://www.voltaicsystems.com/v44#sthash.4bjk63z5.dpuf

i have seen power sonic batteries, 12 volts.

any have , recommendations powering yun via solar?

maybe better thinking using different arduino not suck power or seeing if yun can put sleep.

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