What’s the difference between the chademo and the ccs besides the size?
Will the ccs charge faster? Will I still be using the same charge stations or will this open up more variety?
CHAdeMO is an older standard and is a world standard. CHAdeMO is the same no matter what part of the world you're in.
For CCS, there are two flavors: Combo1 (aka CCS1 aka SAE Combo) and Combo2 (aka CCS2). Combo1 is used in North America and some other parts of the world like South Korea. Combo2 is used in Europe.
Are you in Iowa? If so, in the US we have Tesla's proprietary North American connector, Combo1 and CHAdeMO. Tesla has been selling
CHAdeMO Adapter for years. They so far never sold a CCS1/Combo1 adapter and haven't announced any release of such an adapter for North America.
Below is a visual aid taken from
EV DC Fast Charging standards – CHAdeMO, CCS, SAE Combo, Tesla Supercharger, etc.
CHAdeMO also uses a different communications protocol (CAN (Controller Area Network) whereas CCS uses Green PHY.
I don't think we know the max charge rate of the unreleased Tesla CCS1 adapter. We also don't know if any such adapters will work on all or a subset of North American Teslas (Model S and beyond) and whether a retrofit is needed/is made available.
As for whether it will open up more variety, yes, possibly. If you bought both the CHAdeMO and whatever CCS1 adapter works (if any), you could use both. VW-owned Electrify America has been at their sites installing only a single CHAdeMO + usually 5 to 7 SAE Combo (CCS1). Woe is you if you arrive and find the lone CHAdeMO station is down/handle doesn't work.
One problem w/CHAdeMO now is that in the US, the only two new vehicles being sold w/CHAdeMO are Nissan Leaf and Mitsubishi Outlander PHEV besides Teslas w/CHAdeMO adapter. Nissan has announced that Ariya for North America and Europe will go CCS. (Nissan also owns a controlling stake in Mitsubishi Motors.) So, as much as I hate to say it, CHAdeMO will likely be in a decline in the US from this point forward.