Solar Stalker V2 and GSM shield

Products & Technology Arduino & Seeeduino
4

Hi, I am considering a similar usage, and I have 3 questions :

  • When using SMS, would you consider it Data usage with max. 450mA current which would be Ok ? Or is it only the GPRS/TCP mode ?
  • Other way to look at it : would you know when 2A are drawn so that I avoid this use case ?
  • The step-up converter of the Solar Shlield is LM3224 and the specs I find show a max current slightly over 2A, so where does the limitation come from ? Would a small heatsink help ?

Thanks for your help ! Arduino+GPRS+Solar Charger staked look just great !!!