westend wrote:
How far are you with the solar installation? Depending on what you have installed, you may have the charging solution right there. If it's not underway, you'll need at least 40W->60W of solar to keep the batteries charged. It might even be better to use a 100W panel and a controller, saving the 100W panel for portable/fixed deployment in the future. The smaller solar panels sell at a premium for what they put out.
So far I only have 2 of the 4 batteres that are installed, the battery monitor and shunt that are not yet installed.