Amateur question and I can tell I’m way out of my depth here. I’m considering a Bluetti to help me power a coffee roaster that keeps tripping my 15amp circuits. I’m wondering if I can run it on the Bluetti while keeping the Bluetti plugged in to extend my usage time.
The roaster pulls around 1800W+ and I would need to have it running for about 90 minutes. I would do this at most once a week. I’m worried without being able to charge simultaneously the battery wouldn’t be big enough to last 90 minutes. However if I leave it plugged in would that effectively change my outlet to a 20amp outlet for a couple hours? This may end up being cheaper than having the outlet rewired and there are other benefits to having the battery around. Thanks for your help!
I think it can work, if you choose the right solar generator, for example an AC200L (it won’t work with an AC200MAX or AC180, for example).
the AC200L’s AC outputs support a maximum of 2400W (120V, 20A), so it’s compatible with your average 1800W. (The AC200L also supports power peaks of up to 3000W for 5 seconds and has a powerlifting function that can accept some power peaks from your machine)
As regards the running time (90 min) of your roaster :
you must first charge the AC200L to 100%. Set “recharging power” mode to standard / 1200W (turbo mode 2400W would exceed the capacity of your 15A socket). Keep the AC200L plugged into the electrical outlet, plug your coffee roaster into the AC200L.
The roaster will consume 1800W for 90 min. 1200 W, let’s say 1100 W to take into account the various losses of 10%, will be supplied by the electrical grid (electrical outlet) to your roaster through the AC200L.
The remaining 700W is provided by the AC200L’s battery. According to the manual, at 700W the operating time is 2048*95%*93%/(700W+12) = 2.5 hours. It’s more than 90 minutes, that works !
I do not have a coffee roaster and our sockets in Europe support much higher powers (because the voltage is higher)… I will let other people who have tried, confirm or deny the theoretical calculations. But if it works, here’s a new and beautiful use case for a bluetti central unit for coffee lovers !
First, @doecliff 's reply theoretically would be better; however, it is quite likely that the wiring between the breaker and the outlet would also need to be upgraded. I am making the assumption that the reason for the 15 amp breaker is because the wire is not rated for 20 amps.
Also, your question and @Snips1 's answer, while both unconventional, would certainly appear to work for the time period you need. It has the added advantage of having a backup power station on hand if you would need it.