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Haha thanks, I'll try to go with B for the fridge. I do understand the necessity to have more input to properly charge the battery. I think as far as the current setup I will keep the recently bought 300aH LifePo4 cause I don't see any issue with it. I returned the inverter and am looking at...

So, I will check how I can plug the fridge with the 12V DC. I think it's a simple car cigar lighter plug which I'm not sure how to connect directly to the LifePO4. But what you say does makes sens. As for Victron or Kisae, I can't find those where I am (Japan) and importing is tricky as I can...

Ok so let’s put it that way, I can only have 400W of solar panels, and the engine alternator which I use a few hours a day in general if I wanna make it ok time, put aside the consumption from my appliances that I can adjust, let’s just keep the fridge for example, how big of a battery and...

I do have phones and tablets I will eventually charge from this system. LED lights are running from the lead battery system so I don’t worry about those. Same with all the boat necessary equipment such as water pumps and gps/autopilot. This system will run for extra stuffs and/or as a...

Here it is : https://docs.google.com/spreadsheets/d/1srR5daUH7jDJkqmSya7Th7_JbiT2xH50-T287mZsi8Y/edit?usp=sharing

S sure I can always return it, I still have a few weeks, I guess if fridge running along with the AC it won’t draw more than 2000W then this one should be better ? https://www.renogy.com/2000w-12v-pure-sine-wave-inverter/ Would work fine with the 300aH battery right ?

Thank you for your answer, most of the équipement I will be using is 100V only so I do need an inverter unfortunately. Although most likely the total power needed is indeed lower than thought. Except for the fridge I will probably have running most of the time I will only use other appliances...

So the boat is 34" and I don't think I can reasonably handle more than 2x200W on the bimini I'm currently ordering. The stern is rather narrow. I can get another lithium to put in parrallel but I'm starting to wonder if it's not overkill for my need and also rather impossible to charge with...

Ok so my bad, I checked again and the "Fridge" cooler box uses 45W in Max and 36W in eco mode. Also there is a 12V cigarette lighter socket included.. Guess I can plug that directly to the battery ? If not I can plug it to the inverter with eco mode.

Thanks a lot for your reply. I already have the appliances and everything is AC. Fridge : running non stop at aprox. 130W it's a portable camping fridge Microwave : 10-15 min a day at 1000W Water boiler : 10-15 min a day at 500W AC : 1-2h a day at 800W (mostly before sleep to adjust the temp if...

Thank you for your answer. The boat is a 34 footer, cruiser mostly but I wanna be able to be off grid for a few days at a time. I already have 2 lead acid batteries for the engine start and the boat's equipment. Eventually I wanna make sure to have enough energy to power the air conditioner...

Also I tried it already at my house. Fully charged the battery, pluged the inverter, water boiler and vaccum cleaner working at the same time. This is what it showed on the inverter.

Here are a few pictures of the manual. It's in Japanese so i used Google to roughly translate it. So on my schematic the left side is the current system. 2 lead batteries connected to the boat's outlet, a 1800W inverter and all the boat's electronic ( GPS, autopilot, lamps, etc..) The new...

Anything wrong ? I can always change.. Would be nice to point what's wrong instead of just throwing some rethorical questions..

Hello, Just starting with batteries and solar powered system so I am very much a beginner. Here is what I got : 200W Renogy solar pannel (planning to get a second one soon) 50A renogy Mppt charger 300aH VATRER lifepo4 battery ( 3840Wh 200A Built-in BMS Max 2560W Load Power) 4000W 〜 8000W...