California 6.1 Electrical Overview

[dspuk]

The 80% SOC is absolutely driven by emissions, the various formal emissions drive cycles (WLTP for most markets) that the emissions are measured over benefit significantly from the target only being 80%, it reduces the amount of time the alternator is operating during the cycle also in the most efficient battery absorption zone. The 80% allows enough head room to allow regenerative charging when you lift off. Both of these reduce measured CO2 and overall fuel consumption.

I want to clarify my earlier point — I wasn't disputing that emissions are a factor, rather that I wouldn't characterise the reasoning as 'eco nonsense.' My understanding is that the primary reason for the 80% charge limit is battery longevity, and the environmental benefits — reduced recycling, lower maintenance, and so on — flow naturally from that as secondary advantages.

If there's a document that suggests otherwise, I'd genuinely welcome you pointing me to it. From what I can find, a quick search returns five commonly cited reasons for the 80% limit, none of which are primarily eco-driven. In my view, the environmental upside is a welcome benefit of good battery management, rather than the driving rationale behind it.

Note - I used Claude to make this answer much politer.

 

[vbk1975]

I want to clarify my earlier point — I wasn't disputing that emissions are a factor, rather that I wouldn't characterise the reasoning as 'eco nonsense.' My understanding is that the primary reason for the 80% charge limit is battery longevity, and the environmental benefits — reduced recycling, lower maintenance, and so on — flow naturally from that as secondary advantages.

If there's a document that suggests otherwise, I'd genuinely welcome you pointing me to it. From what I can find, a quick search returns five commonly cited reasons for the 80% limit, none of which are primarily eco-driven. In my view, the environmental upside is a welcome benefit of good battery management, rather than the driving rationale behind it.

Note - I used Claude to make this answer much politer.

I am more than happy for you to hold a different view, generically these systems and how they work and why are operate the way they do are covered by "Electrical Energy Management Systems" AKA EMS or EEMS. A lot of the history dates back to 2012, AGM batteries got introduced at the same time to counter the effects of only charging to 80% SOC and Stop-Start on battery life and reduced usable capacity. Most of the comprehensive documents are paid for services, Bosch handbook also outlines the operation, but this is expensive.

A

 

[MrB999]

Thank you for post. 300w inverter on my 2023 Beach is sine wave and my 240v 100w electric blanket with digital controller worked fine. Obviously only for occasional use, but it would get me out of a jam if I did not have 240 hookup.

 

[jaydisc]

I tested one of my smaller EcoFlow power stations after reducing its AC input power to 80W, and it still refused to charge. EcoFlow power stations absolutely require a pure sine wave inverter. Far from a scientific test… just another data point. (2024 T6.1)

My apologies. I did some more testing and my initial report was wrong. I have now successfully tested the charging of two EcoFlow power stations (a River 2 and a River 3, ensuring maximum AC input power was < 300W), and they've charged perfectly.