Long time partners Coca-Cola Amatil take the coveted bonnet position on Percat’s car.
Returning for 2021 are Timken, Acer, Mongrel Boots, Dunlop, Hare & Forbes, Blackwoods, Coregas, Dormakaba, Freightliner, 3M, Speedflow, Summit Fleet, PPG, Eibach, Lansvale Smash Repairs, Sparco, Mizuno, Unit, Larsen Engineering, Hexagon and RGI.
"2021 is going to be a super exciting season for myself and everyone at BJR," Percat said.
"I'm very confident we will continue this into the season ahead.
"Having R&J Batteries continue on car #8 is fantastic.
"The support they showed us during a tough 2020 was great and I'm proud that they have continued for 2021.
"I'm hoping we can repeat the speed we had at Bathurst last year for Round 1 this year.
"The team has had a good break and we have some new updates for the cars to try and take another step forward in battle for race wins each weekend."
Stuart Hamilton, CEO of R&J Batteries, added: "Partnering up once more with Brad, Nick and the whole BJR team is a truly exciting time for R&J Batteries.
"Motorsport is in our blood. Our staff and customers across Australia and New Zealand are the same.
"Being onboard with BJR and Nick once again is something we are extremely proud of.
"Bring on the 2021 season."
Percat will take to Winton Motor Raceway on Friday for official pre-season testing.
He will make his competitive return at the season-opening Repco Mt Panorama 500. Tickets are on sale now.
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