mr_chadj
New Member
I’m building a smaller scale “portable” system that I want to bring along camping.
It’s a 12v system. With a LiFePO4 battery that can do 200a continuous discharge and a 1200 watt inverter. That’s 2 AWG wiring between battery and inverter with 175amp Anderson connectors along with a 175a AMG/MEGA fuse. That’s a quick rundown.
When I slap a 1000 watt load on the system for 13 minutes (discharging about 10% of the battery) the cables close to the inverter/fuse get warm (more the positive side than negative). The positive leads also get warm close to the Anderson connector as well. I’m worried I have some bad crimps.
Using an infrared laser thermometer the cabling closest to the fuse gets the warmest (112 degrees Fahrenheit). The positive cable right by the inverter gets to 102 degrees. The positive cable right by the battery is about 82 degrees. The room is about 65 degrees.
During this discharge, the voltage measured at the battery terminals is 12.73 and the voltage measured at the inverter terminals is 12.57. So that's about 0.16 volts being dropped. There is no voltage drop when the load is removed.
My load is an Instant Pot that pulls a pretty consistent 1050 watts when heating water. The ac cable from the instant pot even gets warm by the inverter. Though not as warm as the dc cables.
Since I'm a newbie I don't really know if this is normal. Are my cable crimps potentially bad? Thanks for any help you can offer!
It’s a 12v system. With a LiFePO4 battery that can do 200a continuous discharge and a 1200 watt inverter. That’s 2 AWG wiring between battery and inverter with 175amp Anderson connectors along with a 175a AMG/MEGA fuse. That’s a quick rundown.
When I slap a 1000 watt load on the system for 13 minutes (discharging about 10% of the battery) the cables close to the inverter/fuse get warm (more the positive side than negative). The positive leads also get warm close to the Anderson connector as well. I’m worried I have some bad crimps.
Using an infrared laser thermometer the cabling closest to the fuse gets the warmest (112 degrees Fahrenheit). The positive cable right by the inverter gets to 102 degrees. The positive cable right by the battery is about 82 degrees. The room is about 65 degrees.
During this discharge, the voltage measured at the battery terminals is 12.73 and the voltage measured at the inverter terminals is 12.57. So that's about 0.16 volts being dropped. There is no voltage drop when the load is removed.
My load is an Instant Pot that pulls a pretty consistent 1050 watts when heating water. The ac cable from the instant pot even gets warm by the inverter. Though not as warm as the dc cables.
Since I'm a newbie I don't really know if this is normal. Are my cable crimps potentially bad? Thanks for any help you can offer!