Originally Posted by BJAY
Herk- Do you have an inverter? I want to install a 1500 watt. I understand you divide watts by 10 to get dc amp draw from the battery. For a 1350 microwave that would amount to 135 amps. The 2020 I had only registers up to 99.9. Does that mean the monitor gets smoked. I e-mailed the question to the company I bought the monitor from and am waiting for a response.
I do have an inverter. It is a 2400 watt unit that I bought before I understood the power requirement to feed a 2400 watt inverter.
I plan on replacing it one day with a 1000 watt pure sine inverter.
You must use a "shunt" like I stated below to reduce the amperage seen by the monitor to a reasonable amount. The monitor should lose the decimal above 99.9 and read 100 even.
I doubt you would be able to run even a very small microwave off of the available battery power unless you had 6 or 8 batteries, though. The power draw is huge and will reduce the available capacity by over 1/2 rated by trying to suck amps out of the thick plates of a deep cycle battery. (see attached graph of capacity vs amp draw for a typical 100AH battery.)
Also a microwave requires a continuous supply of regulated pure sine power. The cheaper modified sine inverters will not work with the magnetron.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW