New 2024 model! Solar charge controller for the ePropulsion Spirit Battery Plus, allowing the Spirit Battery Plus to be charged with solar energy (solar panel excluded) or with a 12v outlet. A 0.5m 12V input cable is included. In our test with a 100W panel in full sun and angled at the sun, we found that the Spirit Battery was charged at a rate of about 5% per hour. The Spirit Battery is typically used with the ePropulsion Spirit 1.0 Plus and the ePropulsion Spirit Evo