Look into the charging
Look into the charging standard SAE j1772, equipment compliant with j1772 will not damage anything. The onboard charger does the battery charging (unless your vehicle has a DC charge port, Toyota doesn't need that for these). Both 3.3kW and 6.6kW will use either 115VAC or 220 VAC (probably up to 260VAC but I wouldn't push it to 277VAC). Purchase a cable that is listed with the electric testing lab for your country (UL, TUV, CE, Intertek etc.) and you're set. Ideally get a warranty with the EVSE (charge cord), quality matters here, I've gone through 4 low quality portable units in the same time as the permanent Bosch Level 2 charger still going strong.