Solar Power Rangers

 

Viktor and Ivo installing solar panels.

Viktor and Ivo installing solar panels.

 

We sailed back to Florida all the way from Guatemala, braving currents and winds, risking our lives, in pursuit of one thing and one thing only: energy. Turned out we need more solar panels and more batteries in order to produce enough electricity for the fridge, lights and ventilators,  watermaker, electrical heads, and electronics without using the engines or a generator (which we don’t have anyway), or any other fuel-consuming machine. It also turned out, that outside of the United States everything is a lot more expensive if you find it at all. So here we are, back in Key West, installing solar panels.

Our fridge, which has two compartments: one is a fridge and the other a freezer with two cold plates, is the biggest consumer of electricity on board; it draws somewhere between 8 and 10 amps per hour (Ah).

The electronics: GPS, autopilot, radar, sonar, wind vane, AIS, and VHF radio take roughly somewhere between 10 and 15 Ah when in use while sailing. When at anchor, they are tuned off.

The lights: salon, cabin, anchor, cockpit, and deck lights are all LED and consume very little electricity, using one tenth the power of conventional lighting. For example, the anchor light will take 3 amps, not per hour but for the entire night.

Our watermaker, Catalina MK II, takes 16 Ah producing 16 gallons of water per hour, 1 amp-1 gallon. But we use it very rarely, as we also collect rainwater every time it rains through an extremely efficient system Ivo came up with: two hoses attached to the hard top (the roof of the boat) run down to the water tanks. When it rains hard all night, we fill up the two tanks: 220 gallons of pure rainwater. But when it doesn’t rain for a while, then we turn on the watermaker which we bought and installed ourselves. This is a fun little contraption that takes the salty water from the sea and separate’s the liquid from everything else thus producing pure drinkable freshwater without any salts and minerals in it.

Maya collecting rainwater in a bucket. When we want to fill up the water tanks we plug hoses to the opening on the hard top.

Maya collecting rainwater in a bucket. When we want to fill up the water tanks we plug hoses to the opening on the hard top.

The electrical heads, two of them, which we installed first thing after we came back from Guatemala replacing the old regular ones, consume 16 Ah (but of course, we don’t use them constantly).

The air conditioning system which came with the boat went in the garbage with all its bulky tubes and insulations as soon as we moved in. ACs on boats need lots of electricity and the people who use them are usually those who stay plugged at the marinas and pay marina and electricity bills. We are not such people. Except in Havana Cuba where we had no choice, we have never stayed at a marina; always at anchor. And when it gets too hot, we turn on the small ventilators which consume 0.5 Ah, or jump in the water.

When we bought the boat she came with two solar panels 170 watts and 3 AGM house batteries 300 Ah. Initially, we bought and installed 3 more Kyocera solar panels, adding 750 watts, and we replaced the 3 AGM batteries with 10 deep cycle led acid batteries 6V, 370 Ah. Thus, when we started cruising, we were producing almost enough electricity for our needs, but had to be very cautious about it, constantly monitoring the amperage in the battery bank. What’s more, after two or three overcast days and when sailing and using all the electronics, we had to turn off the fridge or we risked the battery bank dropping below 50%.

Now, we solved our electricity shortage problem by buying two more humongous solar panels, 320 watts each, and replacing the 10 deep cycle batteries with four lithium batteries, all together  700 Ah. Total of 7 solar panels: 1390 watts of pure solar energy. That should be enough! Seen from above, Fata Morgana looks like a solar panel field floating in the sea. With so many panels, we produce electricity even at night, when the full moon illuminates the liquid world around us.

Fata Morgana from above

Fata Morgana from above

We got the new panels from eMarine Systems located in Miami Florida. They specialize in alternative energy systems and have some of the most competitive prices on the market. After spending much time answering our questions and helping us take the right decision as to which panels, how many to buy, and how to install them, Bob Everhard the sales manager of eMarine Systems, agreed also to become one of our sponsors by giving us a bit of a discount from the price. Thank you, Bob, for supporting our journey and our goals: to achieve self-sufficiency, to travel without polluting the environment, to live off the grid entirely.

A BIG thank you goes also to Balqon and their staff for all the patience and professional service in dealing with us; corresponding with Ivo via E-mail over a thousand times, answering all his questions. These are the guys who have the best and the cheapest lithium batteries in this part of the world.

And finally, we would not be able to do so much work on the boat in so little time without the help of the guys at the new West Maine store in Key West. Thank you all!

Next stop: Bahamas!

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About lifenomadik

We are a family aboard a boat in search of freedom and adventure.
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6 Responses to Solar Power Rangers

  1. Voytek says:

    You seem to use the terms amp and amp-hour interchangably. They are as different as distance and speed. It makes it difficult to understand what you are actually measuring.

    • lifenomadik says:

      Voytek, Ivo’s response to this comment was: „Whatever, the important thing is, it’s working (meaning the panels and batteries)“.

      I will go back and look at the text and try, with Ivo’s help, to fix this confusion.

      Thank you for letting us know, appreciate it!

  2. steve says:

    This is interesting…I use lithium powered hand tools, drill, Dremel, etc…With exception to my cell phone lithium battery, the hand tool lithium batteries seem to die out after 1 year!

    In 2006, I bought new 3 Rolls lead acid batteries, approx. 600 ah total. at the same time I installed 2 solar panels combined to total 265 watt input connecting a Blue Sky 3021i mppt charge controller.

    I would like to upgrade to lithium batteries in the near future..if reasonable…My lead acid battery bank is still very good however somewhat diminished…I have performed lead acid battery maintenance and placed a Nano-Pulser 3 years ago to the 7 year old battery bank…..My alternator running off my 4108 has not functioned in 6 years….and I haven’t needed it! I run my refrigeration 24-7 while cruising, also tv, pc, lights, I’ve found no limit!

    My Rolls batteries will not last forever…..I see their demise cumming….. Is lithium my next battery purchase and why?

    • lifenomadik says:

      Yes, lithium batteries should be your next battery purchase, I think. For the same price as the old ones you have you get lithium at least 3-4 times lighter weight, use up 3-4 less space; get charged faster, discharge slower, you can discharge them to zero, at once without damaging them (although we never do that, as we use only 15%, we now have way too much electricity); and the most important: maintenance free. But there is one downside: nothing…Really, no downsides…Call Balqon, and please tell them you were referred by Ivo from The Life Nomadik! they are great team, will help you with all your questions.

  3. Kamen says:

    за този текст …It also turned out, that outside of the United States everything is a lot more expensive if you find it at all…
    има не лоши неща и в китай и европа…

    • lifenomadik says:

      Да така е, но ние тогава се намирахме в Гватемала- далеч от Европа и Китай и само на няколко стотин мили от Флорида… В района, където плавахме- Карибите и Централна Америка трудно се намират слънчеви панели и литиумни акумулатори…

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