question

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postpicspls asked

How to figure out size MPPT to use with my Panels and Batteries?

I'm a complete noob and am trying to learn as much about this as possible.
I have a single 305W panel (

  • STC Power Rating 305W
  • PTC Power Rating 282.68W 1
  • STC Power per unit of area 17.3W/ft2 (186.5W/m2)
  • Peak Efficiency 18.65%
  • Power Tolerances 0%/+2%
  • Number of Cells 60
  • Nominal Voltage not applicable
  • Imp 9.24A
  • Vmp 33V
  • Isc 9.94A
  • Voc 40.2V


2x100Ah LiFePo batteries
How do I figure out what size MPPT I need?
This should be basic and straightforward, right?
Thanks for all help!

MPPT SmartSolar
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2 Answers
marekp avatar image
marekp answered ·
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Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

postpicspls avatar image
postpicspls answered ·

That helps tremendously!
Thank you!


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Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.