As you probably know, electric cars can charge using AC 120- or 240-volt outlets (in homes & businesses). This tends to be relatively “slow” and is good for, say, overnight or daytime at-work charging when there is plenty of down-time..
However, when traveling any significant distances, drivers often want faster full-charging speed (e.g., ~1 hr or less), so on-the-road travel chargers tend to be powerful DC fast chargers.
Now Tesla drivers can access arguably the best DC charging network: the
TESLA Supercharger Network.
In contrast, almost all other electric cars in North America use
Combined Charging System Type 1 (CCS1) equipment (several providers) for fast DC charging.
Together Tesla and CCS1 stations offer relatively good coverage in well-traveled areas throughout North America. However, there are apparently areas where CCS1 stations are more convenient. And unfortunately, Superchargers and CCS1 chargers use different cable plugs, so a Tesla car cannot use a CCS1 charging station without assistance.
A CCS1 adapter allows CCS1 charging station cables to attach to the Tesla proprietary charging port. This increases accessible to high-speed DC charging equipment and helps alleviate real or imagined “charge anxiety” (which electric-car drivers, used to the over-abundance of gasoline filling stations, can suffer).
Should someone get a CCS1 adapter?
- Average drivers (e.g., ~45miles per day) probably don’t need one; but many want one (“just in case”).
- Distance travelers should probably have one for circumstances where Superchargers are absent or congested.
- A good CCS1 adapter can certainly be a healthy part of one's charging "tool kit;" safely stored in the trunk for convenience and emergencies, along with the AC Mobile Connector and its various wall outlet plug-adapters.
So far there have been a few on-the-road charging adapters (usable in North American cars) sold by Tesla:
- the J1772 adapter (AC; provided with every new car);
- the (odd) CHAdeMO (DC; no longer sold); and now
- the Korean CCS1 DC adapter.
Unfortunately, it is not uncommon for Tesla charging equipment to be sold out or otherwise unavailable. For those instances there are also third-party-made versions of charging adapters.
One important note: Cars made before 2020 (and during a chip-shortage period in 2021) are not compatible with CCS technology. Drivers can check CCS status on the software screen in the car ([a] Center touchscreen;
Software screen; [c] Additional Vehicle Information box). Do-it-yourself hardware retrofits are potentially possible for some cars, and Tesla may offer official service retrofits (as was done in Europe). Stayed tuned about that.
I recommend that you use the TMC Forum site to study up on the issues (type of charging adapters needed/wanted; Tesla vs. third-party products; etc.).
For example, I have created several threads dealing with the nuts and bolts of Tesla charging equipment. Here is a start: