This is in order to maximize power generation. Average charging time is only 8 hrs. Which means that during one day SP-102 unit is capable to collect enought energy to continue working for the next 36 hrs.
- Upgrade does not include SP-102 lighting unit (shown on the picture)
- Upgrade does not include frangible mounting (shown on the picture)
- Lighting unit should be ordered separately
- Mounting should be ordered obligatory