A 100 amp hour LiFePO4 can be bought for less than $300. A 200W solar suitcase for less than $200. The chest type fridge we installed on a slide sells for less than $300. We also bought a small, light 700W propane generator for $250 to charge the battery when solar is not keeping up, but have only used it a few time in nearly 30K miles of T@Bing. So, a little over $1000 for limitless use of a 12V fridge.Alfiris2 said:I just don’t see how I could make a 2 way work without spending a lot of money on rooftop solar panels and a lithium battery.
My understanding is that it calculates SOC by measuring the current going in and out of the battery (net consumption) and subtracting that from what you've set as the battery capacity. When the battery is initially connected to the SmartShunt, the default SmartShunt setting assumes that the battery is fully charged and synchronizes to 100%. We've seen lots of inaccurate SOC readings because the battery wasn't fully charged when connected to the shunt.MarineFriend said:I guess my question now is how does the system calculate the % charged?
and how do I know it's accurate?
Voltage from a solar panel should be higher than the battery rating. A typical voltage will be over 20V's when in sunlight and not connected to a controller. Have you checked the voltage coming from the panel?Jfrei said:Are you saying the issue is that at the panel you should be reading a higher voltage?