Can someone help me decode this charging pattern?

[tusharparmar]

So, I have been noticing some unexpected numbers for my at home charging sessions.

Usually I charge at home overnight with provided mobile charger and Nema 10/30 socket using an adapter. I have set my car to 24amps.

Here is a screenshot of my charging session from yesterday,

I started the session at 28% SoC and it ended at 65% SoC, total 37% SoC gain and as shown in screenshot, total power delivered was 56kwh.

So, if I do a math for each % of a battery it consumed 1.51kwh (56/37). I have been noticing this pattern since I started charging with this setup. Power consumed per % of battery varies between 1.45kwh to 1.55kwh. That means to charge it 100% it will consume 145kw to 155kw.

I am sure that my R1S doesn't have that large of a battery so how is this possible? Is it due to energy loss during the session? If yes, is 15-20% loss normal?

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[Thedude]

That’s about the right amount of loss for converting AC power from the wall to DC power for the battery.

 

[Marchin_MTB]

I think losses of 10% are not unheard of for level 2. In addition to charging losses the truck may be using shore power while you charge to do certain things. If you go to the energy screen in the truck it will give you a breakdown of how much went into the battery vs other things.

 

[Craigins]

I think losses of 10% are not unheard of for level 2. In addition to charging losses the truck may be using shore power while you charge to do certain things. If you go to the energy screen in the truck it will give you a breakdown of how much went into the battery vs other things.

I'd go a little stronger and say 10% loss is typical for an AC-DC converter.

 

[tusharparmar]

Thank you all for clarifying my confusion. Really appreciate it ?.

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