Solar panels choose high current or high voltage
Choosing 12V, 24V, or 48V is mainly about controlling current as your power needs grow. This guide gives a practical decision process you can apply to RV, cabin, and off-grid setups. [PDF Version]
The current is large after solar panels are connected in series
When panels are wired in series, you connect the positive terminal of one panel to the negative terminal of the next. [PDF Version]
Output current of solar panels in series
For identical solar panels wired in series, the voltages are summed and the current stays the same. [PDF Version]