29.8 Vmp: too high for 12V, too low for 24V?

System

It is hot as hell, the solar panels have a operating voltage max of 29.8, the batteries are 12V.

will that work or is it going to be a big headache? i have heard that you need at least 17.5 volts for a 12 volt battery charging system, but can it be as high as 29.8V?

i have also heard that a 24 volt system needs at least 35 volts to charge it, so my 29.8V panels will not work. does that sound right to you?


panels:
Maximum Power(Pmax)- 70 watts. Open circuit Voc(V)- 44 volts. Short circuit Isc(A)- 2.99. Operating Voltage Vmp(V)- 29.80. Current at Pmax or Imp(A)- 2.35. Maximum System Voltage(V)- 600. Module voltage(V)- 24