And the 6ft 2ins striker, who scored within seven minutes of making his debut as a second half substitute, says the Stags can climb out of the relegation zone.
The bubbly Louis, signed on a three-month contract in midweek, gave struggling Mansfield a different attacking dimension with his pace, power and height.
- Click on the green play icon to watch a video slideshow of match action photos by Chad's Angela Ward
He almost followed up his first equaliser with another late on, moments after Brentford grabbed a controversial 85th minute winner to send the Stags to the foot of the Football League, but this time his shot was deflected wide.
After the final whistle on Saturday he told Chad: "Of course we can move up the table. We have just got to go for it and be really positive.
- Boulding handed 18th goal of season
"We have games in hand and we have got to go out and win them.
"If we perform like we did for the first 10 minutes or so when I came on today, then we can do it.
"To go down without a fight would be the coward's way."
Louis says that he has not set any goalscoring targets, and just aims 'to do as well as I can in every game'.
Of his 63rd minute goal, created by the persistance of Micky Boulding and which hauled the Stags level at 2-2 for a while, he added: "I was really pleased. I was confident I would score today.
"It was all about anticipation. The ball was bouncing around and then I went through and tucked it away."
Louis' appearance clearly lifted the Stags' faithful, who quickly warmed to his whole-hearted efforts.
The striker, who has League experience with Oxford and Bristol Rovers but had been playing non-league at Weymouth earlier this season, added: "It makes me feel good to hear the fans cheering me. They were great.
"This is a chance of a lifetime for me to get back into the Football League. I want it!
"I was disappointed not to start today, but I understand the manager's reasons and his decision. I respect that. It is up to me to take my chance when I get it."
Experienced keeper Carl Muggleton, whose heroics get the Stags in the game at times, told Chad: "Jefferson really is a breath of fresh air around the club and the dressing room.
"New faces help to lift a team and he is a real character. New players put pressure on those already at the club and can be a kick up the backside to one or two."
Stags boss Billy Dearden said that he had not selected Louis for his full debut because of the striker's lack of recent match practice.
He told Chad: "He gives us a different dimension, put himself about and got a goal. It was a good start."
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