Solar For Lola!

We have Solar for Lola!

It’s been a long time coming, we have solar for Lola.  AM Solar came through, and we installed 4 160 watt solar panels on the Roof.  Originally we were looking at 6 100 watt panels because AM Solar was  having issues with the 160 watt panels they were receiving.  But the latest panels tested good, and we opted for the 4 160s.    The square footage of the panels are the same for 4 160s vs 6 100s.  Because there is only room for two rows of panels, the 160 watt installation actually takes up less roof space.  This gives us more room to expand in the future.

We checked in Monday morning.  The evaluation took a bit longer because of some electrical problems we created when we shorted out a battery while insulating the battery box.  Simple mistake not following my diagram of the cables and batteries.  The solar panels and batteries got installed over the next 4 days, and we tested Lola Thursday night, leaving for home Friday Morning.  AM Solar was great to work with.  They came in under-budget and on time.  Roger was great to work with during the ordering and scheduling process and Cody went through the systems one at a time in detail.  We have all the system documentation including diagrams specific to our installation.  Thanks to the entire crew at AM Solar!

160 Watt Solar Panel and Christine

160 Watt Solar Panel and Christine

The actual setup now includes:

 

 

 

We upgraded our batteries to a 300 amp-hour lithium pack built by AM Solar replacing a 300 amp-hour wet cell battery pack (3 batteries).  We also replaced the chassis batteries with AGM batteries in case we decided to insulate the entire battery compartment.  Since lithium batteries should be charged when the interior battery temperature is 32 degrees or warmer, we insulated the lithium battery itself – we tested it to 22 degrees without a heater and to 12 degrees using a little desk heater.  The lithium batteries give us twice the capacity because they can drop down to 10-15% of capacity vs. 50-60% on a wet cell.  Plus, lithium-ion batteries charge up in a fraction of the time.  Of course this requires a new inverter/battery charger that supports the fast charging and different charge strategy (lithium-ion batteries don’t like constant trickle charging).   With our new charger we can actually fast-charge the batteries while we are driving using solar+alternator, or while boondocking using solar+generator, or while connected to the grid using shore solar+shore power or just solar.  We are looking forward to doing more tests of the solar charging options once we are full-timers.

Room to Expand

We have room for 4 more 150/160 watt solar panels on the roof, and additional lithium batteries in the battery bay.  Over the next year we will be recording our power usage to see how the setup meets our needs.

Benefits Summarized

Our 640 watts of solar panels and 300 Amp Hours of Lithium provides several benefits:

  • Faster battery charging:  Lithium batteries charge much faster than wet-cell batteries and can utilize combinations of solar, engine alternator, generator and shore power
  • Weigh less:  Lithium batteries weigh less – more than making up the weight of the solar panels
  • Less maintenance and longer life: Lithium batteries require virtually no maintenance and last longer than wet-cell batteries
  • More usable energy: Lithium batteries can be drawn down to 10% of their capacity without damaging the battery
  • Silent Charging:  Solar charging makes no sound so you don’t have to worry about ‘quiet hours’
  • Charge Anywhere there is sun:  We can charge our batteries anywhere there is sun.  Even on cloudy days you get some charge reducing the amount of shore power or generator usage

We are looking forward to tracking our solar usage and the related conditions as we travels.

Gone with the Wynn’s

We just missed seeing Nikki and Jason Wynn of Gone With the Wynns as they were busy editing video, but we managed to snap a ‘proof’ picture that we were there!  They have provided us with inspiration and real-world RV know-how, and of course of few things NOT to do.

Gone with the Wynns - Almost metUntil next time…

 

JC

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