Beauden Barrett wants fans to continue believing in All Blacks

New Zealand fly-half Beauden Barrett has urged the fans to continue backing the team as they face South Africa for the second time in two weeks at Ellis Park on Saturday.

The All Blacks will be heading into the weekend's clash after losing five out of their last six games that saw them slip to the fifth place in the World Rugby Rankings.

The results also meant head coach Ian Foster and skipper Sam Cane has been under a lot of criticism with their fate with the side to depend on the next few games and Barrett is confident that they will reclaim their form.

"Winning is a habit, but losing can be too," he said.

"We have to remember how well we can do the simple things, why we play the game and what got us here in the first place, not over-complicating things and just enjoy playing footy.

"All I ask is the fans believe in us, have our backs and support (us) because we certainly need that."

Barrett sustained a dangerous collision with Springbok wing Kurt-Lee Arendse in the closing stage of the game with the latter red-carded after the incident.

"It was quite a big collision and I did think the worst instantly, especially when I was on the ground and told to stay still," said Barrett about the injury.

"It wasn't until (the doctor) came on and asked me, 'Can you move your fingers? Your toes?' I was relieved to have passed those tests.

"I eventually sat up and was able to walk off and get on with it.

"But there was a fearful period there for a minute or so where you do think of the worst.

"It's quite scary when you go over backwards and you find yourself come down on your head and shoulders."