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
theoldwizard1 wrote:ktmrfs wrote:
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.
I disagree completely !
Golf cart batteries are designed specifically to handle "high" loads and at 125A that is only 1/2C ! A pair of GC-2 batteries will live longer than a pair of 12V marine/RV batteries and cost less !
GC2 have many advantages, and can handle hundreds of cycles down to 25% SOC, but high current draw is NOT repeat NOT an advantage nor something GC2 do well. Myself and several other posters to this thread have seen the voltage drop and how quick a inverter will drop out when drawing 100A from a pair of GC2's.
Even trojan will tell you if you want high current draw use their 12 deep discharge. Thick plates and few of them do NOT play well with high current draw.
