Our small Starcraft Satellite trailer has a 1000w High Pointe microwave that recently failed to heat my food after switching batteries. I previously had 2 large deep-cycle lead acid batteries used in conjunction with with a Powerbright APS2200 PSW inverter. I've used this inverter for 10+ years with 2-3 batteries and it has never failed to operate any microwave for as long as needed. While camping remotely I plug the shore cord into the inverter to power the trailer. After the 2 LA batteries totally discharged by accident for months while in storage, they needed to be replaced. I bought a CHINS 100amp LiFePO4 12v to replace them. The battery maintains a high voltage while being used to run/charge my laptop for hours, charge camera batteries, run lights/radio/tv/DVD player daily. But, when I try to heat up a breakfast sandwich which usually takes 2 minutes, I have to run the microwave many times for a total of 20 minutes to heat it up. Basically, it's very weak. I use 100-200w of solar panels to bring the battery up to 13.3-13.4v daily.
Does a single 100amp battery lack the power needed to run the microwave? Once I got home I plugged the microwave into my home with an extension cord and it heated a cup of water in just 30 seconds, so it seems to work fine. The inverter appears to work fine, but is there a way to test its output? Also, would it make any difference if I ran an extension cord directly from the inverter to the microwave? Will try that tomorrow. If that works, then is there a problem in the trailer wiring?
Does a single 100amp battery lack the power needed to run the microwave? Once I got home I plugged the microwave into my home with an extension cord and it heated a cup of water in just 30 seconds, so it seems to work fine. The inverter appears to work fine, but is there a way to test its output? Also, would it make any difference if I ran an extension cord directly from the inverter to the microwave? Will try that tomorrow. If that works, then is there a problem in the trailer wiring?