Samlex Inverter Power Draw Question
I just finished a Samlex pure sine wave PST 3000-12 inverter install. I ran 00/2 cables because that was recommended in the user manual. I added a Renogy 30 amp transfer switch with the charger wired ...
Forum Discussion
batteries 12V in parallel, or GC2? GC2 do NOT like high current draw, way to much internal resistance so the inverter will kick out on low voltage pretty quick.
12V, assume you have at least 2, they (a) share the current, so each battery supplies 1/2 the load current unlike a GC2 pair where each battery must supply total load current and (b) have much lower internal resistance, hence less voltage drop with high current load.
The 125A draw is in the ballpark for a microwave, the AH consumed is reasonable for a 1 minute draw. I suspect that the display is calculating looking at the voltage drop over time and going from full charge and then drawing a high load for a short period of time the voltage tapered faster than it will over time hence messing up the remaining time.
I think you will get a better indication by running the microwave for at least 5 minutes, better 10 minutes and see what it shows for remaining time. It could still be in the 30 minute range with a 200AH + battery bank
12V, assume you have at least 2, they (a) share the current, so each battery supplies 1/2 the load current unlike a GC2 pair where each battery must supply total load current and (b) have much lower internal resistance, hence less voltage drop with high current load.
The 125A draw is in the ballpark for a microwave, the AH consumed is reasonable for a 1 minute draw. I suspect that the display is calculating looking at the voltage drop over time and going from full charge and then drawing a high load for a short period of time the voltage tapered faster than it will over time hence messing up the remaining time.
I think you will get a better indication by running the microwave for at least 5 minutes, better 10 minutes and see what it shows for remaining time. It could still be in the 30 minute range with a 200AH + battery bank
