The Obama administration provided struggling battery maker A123 Systems Inc with nearly $1 million on the day it filed for bankruptcy, the company told lawmakers investigating its government grant.

The company, which makes lithium ion batteries for electric cars, filed for Chapter 11 bankruptcy protection last month after a rescue deal with Chinese auto parts supplier Wanxiang Group fell apart.

That same day, October 16, A123 received a $946,830 payment as part of its $249 million clean energy grant from the Energy Department, the company said in a letter obtained by Reuters to Republican Senators John Thune and Chuck Grassley.

(Reporting by Ayesha Rascoe; Editing by Gerald E. McCormick)