480 Arsenal 480 Arsenal 3

Of its 2 ports, 2 are Level 2. Level 2 ports are 240-volt AC chargers, typically used where a car is parked for an hour or more. That is about 24% below the Massachusetts average of 2.6 ports per station. The registry lists one connector type: J1772, the standard Level 1/2 AC connector.

Watertown has 46 charging stations in the DOE registry with 98 ports, the 16th-most of 331 cities and towns in Massachusetts. 480 Arsenal 480 Arsenal 3 accounts for 2% of the charging ports in Watertown. ChargePoint runs 40 stations in Watertown. Statewide, Massachusetts has 4,921 stations and 13,009 ports, the 3rd-largest station count of the 51 states and DC. The biggest station in Massachusetts, Avalon Quincy Adams in Quincy, has 83 ports.

The largest US charging network by station count — mostly Level 2 at workplaces, retail and municipal sites. ChargePoint operates 48,998 stations in the registry across 52 states, with 5,017 DC fast and 83,427 Level 2 ports in total. 3,740 of those stations are in Massachusetts, 76% of the state's 4,921.

“Available” means the station is open and in service according to the DOE registry. Its access code is public, meaning it is listed as open to any driver. It opened on Sep 23, 2025, one of 680 stations in Massachusetts with a 2025 open date. The station's record was last updated at the source on Oct 12, 2026.