SnBGC
Well-Known Member
- First Name
- Greg
- Joined
- Apr 20, 2020
- Threads
- 46
- Messages
- 5,955
- Reaction score
- 9,749
- Location
- Phoenix
- Vehicles
- 2021 Mach-E FE, 2021 Wrangler 4xe High Altitude
- Occupation
- Manager
Yeah. It is a tough concept to explain. In some ways it is like filling up a water balloon with another water balloon. On one hand you have a balloon totally full of water (the charging station) and on the other hand a balloon with very little water inside (the car). Connect the two balloons with a straw. Skinny straw might be like 50kw.....thick shake straw might be like 150kW etc.It's a confusing concept for newbies (as it was for me initially), but even trickier to explain in a marketing ad without wasting a full paragraph of space.
It's also very frustrating, because it's just the opposite of how people usually refuel. In an ICE car, we fill to 100% all the time and drive in the 25-100% range almost exclusively. Which is natural because it leaves plenty of reserve in the tank for unexpected detours.
But in a BEV, the fastest charging comes when running the battery down to 10% or less (i.e. nervous time). And gets very slow (and expensive at EA pricing) above ~75%. That's not the best marketing info. So they're staying vague.
Lay both balloons on the table and see how fast the empty balloon fills initially....then the transfer rate decreases as the pressure equalizes.
Then, remember that most of us don't normally fill one balloon with another since most of us have a water tap at home anyway.
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