Some electric vehicle charging stations along the Pike are offline during Memorial Day Weekend, state transportation officials said.

Fixed charging stations in Lee, Natick, Charlton, and Framingham are “currently unavailable,” the Department of Transportation said on Friday. Tesla charges at the service plazas in Charlton are still online.

A spokesperson for the Department of Transportation said two mobile battery charges will be placed along I-90 at the Natick and Charlton service plazas, first in the westbound direction on Saturday and then in the eastbound direction on Sunday and Monday.

“MassDOT continues to work toward establishing a financially sustainable, equitable, and complete network of fast-charging stations to support travelers taking long-distance trips in electric vehicles,” the spokesperson said. “The process to build out and maintain a reliable charging network is underway and MassDOT’s efforts are complementary to other ongoing federal, state, and local initiatives supporting EV adoption.”

SparkCharge said on social media that mobile charging stations are available Saturday in Framingham from 9 a.m. to 12 p.m. and Charlton from 8 a.m. to 5 p.m. in the westbound direction.

Stations are available in the eastbound directions on Monday in Charlton from 8 a.m. to 1 p.m. and Framingham from 9 a.m. to 5 p.m, the company said.

Additional public electric vehicle charging stations are available along Route 128/I-95 in Lexington and Newton. More than 35 charging ports can be found at Park and Ride lots statewide.

More alternative fuel locations in Massachusetts can be found on the U.S. Department of Energy’s website.