There are true D cell rechargable batteries, but i have yet to see a major name brand..

Odec 10,000 Ma
EBL 10,000
Powerex 11,000

Several have 4* plus reviews on Amazon..


httpshttps://www.amazon.com/s/ref=sr_nr_p_72_0?fst=as%3Aoff&rh=n%3A3760901%2Cn%3A%213760931%2Cn%3A15342811%2Cn%3A15745581%2Cn%3A389582011%2Cp_n_feature_twenty_browse-bin%3A10063714011%2Cp_n_feature_two_browse-bin%3A389572011%2Cp_72%3A1248903011&bbn=389582011&ie=UTF8&qid=1478094033&rnid=1248901011