Recent content by svfalkor

Here is a German product that is supposed to save the summer electricity overcapacity and provide it in winter via H2 storage. The idea is to make a house energy independent. But it comes with an expensive price tag: 85k :D Their site is in German but here is the Google translate link...

Hm, not sure about the US but in Germany these devices can be bought and used legally. They are called Balkonkraftwerk (balcony power plant). They consist of a solar panel, inverter and plug. They are limited in max power and you need to register them. See for example on Amazon (just to...

I know you said "from wood" but I am wondering if bio gas wouldn't be easier? You could just use an ordinary gasoline generator with a methane kit? The bio gas (methane) should be fairly easy to produce from waste material?

Food for thought: these guys built a fridge with a water based thermal battery: The use case is to run it on solar or to power it when cheap electricity is available. Its in German but Google translate does a decent job...

Another one, pretty close to go to market: https://sonomotors.com/en/sion/

@ArranP, I would look at it from a different angle: You outlined the maximal shade coverage from the boom while sailing. BUT: Most of the time you are probably not sailing but at anchor / mooring / marina. Therefor you need to map out the shading of the boom when not sailing. E.g. centered or...

In the EU you would have the European Union energy label: https://en.m.wikipedia.org/wiki/European_Union_energy_label

@eXodus, thats a good way to visualize it! Although I think we have a different situation here. Phase 1: DCDC converter Voltage > Battery Voltage: charging Phase 2: DCDC converter Voltage = Battery Voltage: nothing happens Phase 3: DCDC converter Voltage < Battery Voltage: What happens now? Or...

I do want to turn the DCDC converter off at the "float" voltage setting. But the MPPT controller will bring the voltage higher up (for a short while so the battery can balance). Thus my question if it will harm the DCDC converter. Additionally I will also add a manual switch, I will only use the...

Well I have a Battleborn battery bank and they recommend to use a "absorbtion" phase. This is essentially just a higher voltage for a little while so that the BMS can balance. Since I have that programmed into my mppt controller there will be a situation where battery will have a higher voltage...

Thank you! Thats the answer I was looking for.

Hi solar lovers! I have the following system: alternator -> starter battery (lead acid) -> [missing component] -> house battery (lithium) <- mppt charge controller <- solar My starter battery is charged by the alternator, my house battery is charged by mppt controllers To add redundancy I...

@SDovey , I would try to go the other way round: 1. determine where you will put the panels. Since there is limited surface area and always shade on a sail boat you probably have to put them into different places. E.g I have panels on my davids, bimini, dodger and hand rail around cock pit. 2...

I built a Bimini that fits the 50cm panels exactly. And now the sizes of Renogy / HQST panels seems to have changed ? I guess I should have ordered the panels first. But then shipping due covid wasn't exactly easy... I'll find a solution, one way or the other...

@Symbioquine, thank you that is helpful! It seems HQST and Renogy both had the 498mm version but now they sell the 507 version. Maybe they switched their supplier? I wrote HQST, lets see what they say...