View Single Post
Old 12-24-2009, 05:36 PM   #55 (permalink)
WisJim
EcoModding Lurker
 
Join Date: Apr 2008
Location: Western WI
Posts: 21
Thanks: 1
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by rmay635703 View Post
Hmm, now how do I get one or two of those to charge my 48v battery pack on my electric? 90v seems rather high as does 67v.
Peak power is at the 67v point, and 48 volt batteries need about 60+ volts to fully charge. 12v PV panels typically have a peak power voltage of 16 volts or more. One thing to do is use a MPPT charge controller such as an Outback MX60 which will accept a higher voltage from the PVs to charge a lower voltage battery.
  Reply With Quote