WME Posted November 19, 2022 Share Posted November 19, 2022 (edited) I've been designing/building a DIY power wall sort of thing as a whole house non generator power backup. In the research I discovered a possible solution to a common toy RV problem Little generator/big A/C. Your generator will run your A/C but it won't start it, even with a ez start. The magic box feeds your generator power through it to your A/C and when the A/C tries to start, the box borrows the needed extra power from your house battery. After the A/C compressor starts the box uses the generator to recharge the battery while running the A/C. Sounds cool doesn't it, problem is $$$. But at least it is real and there may be less expensive units in the future. Read on, the Victron Mulitplus ...https://www.victronenergy.com/inverters-chargers Edited November 19, 2022 by WME Quote Link to comment Share on other sites More sharing options...
Odyssey 4x4 Posted November 19, 2022 Share Posted November 19, 2022 12 hours ago, WME said: I've been designing/building a DIY power wall sort of thing as a whole house non generator power backup. In the research I discovered a possible solution to a common toy RV problem Little generator/big A/C. Your generator will run your A/C but it won't start it, even with a ez start. The magic box feeds your generator power through it to your A/C and when the A/C tries to start, the box borrows the needed extra power from your house battery. After the A/C compressor starts the box uses the generator to recharge the battery while running the A/C. Sounds cool doesn't it, problem is $$$. But at least it is real and there may be less expensive units in the future. Read on, the Victron Mulitplus ...https://www.victronenergy.com/inverters-chargers What type of AC would an Rv be running that the generator couldn’t start? A honda 2200 can run a 13,500 no problem with the soft start kit. I just picked up a Renogy 3000 watt inverter / charger for my Odyssey that has an internal transfer switch for when shore/generator power is detected. I could in theory start the ac via generator, or through my inverter/ battery bank, and then transfer over to the other source without issue, all while the ac is running. I believe the transfer switch in the inverter is something like 10 milliseconds. The victron using the DC battery as a power boost sounds similar to a hard start capacitor added to residential units for when compressors start getting old and needing an amp boost on startup. Quote Link to comment Share on other sites More sharing options...
WME Posted November 19, 2022 Author Share Posted November 19, 2022 (edited) 12 hours ago, Odyssey 4x4 said: What type of AC would an Rv be running that the generator couldn’t start? A honda 2200 can run a 13,500 no problem with the soft start kit. People who bought a used RV with a 13.5 kbtu AC with no generator and only have a 1200w budget. The Victron is not the answer for that person because of the cost, BUT future versions of the technology might be the problem solver. Especially if a generator mfg would incorporate that electronic technology in a generator. Next gen inverter generator ?? 1500w generator with a 10ah battery. Sigh🙄... Yamaha makes one 3000w + 500w boost only $3400 and of course with 3000w a toy house A/C doesn't need the boost🙄 But the right size one is comming Edited November 20, 2022 by WME Quote Link to comment Share on other sites More sharing options...
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