Chamanga scored a record-breaking five goals for Swallows in a 6–2 league win against Platinum Stars on 9 December 2007. This included a hat-trick between the 20th and the 24th minute. In April 2008, Chamanga moved to Chinese Super League club Dalian Shide, after he scored 14 goals in ABSA Premier League for Moroka Swallows in the previous season. On 6 May 2012, Chamanga made his 100th league appearance for Dalian in a 4–1 home win against Tianjin Teda. He scored a hat-trick in this match. He scored 14 goals for Liaoning Whowin in 2016 Chinese Super League, tied second on the scorers' ranking table. He renewed his contract with Liaoning Whowin until 2018. Chamanga suffered serious shoulder injuriy and fractured ribs when challenging for a header during the match against Guizhou Hengfeng on 8 July 2017, but he recovered and decided to stay with team after its relegation to the China League One. On 6 July 2018, Liaoning Whowin announced that Chamanga would no longer playing for the team, but participate in team management instead, indicating his retirement. At the end of March 2019, Chamanga came out of retirement and signed a 3-month contract with Red Arrows in Zambia.
International career
Chamanga made his international debut on 26 February 2005 against Botswana and five months later he scored his first international goal in the COSAFA Cup semifinal against South Africa. His goal against Bafana Bafana earned him his first move abroad as the then South AfricanPremier Soccer League side Bush Bucks signed him in 2005. After Bush Bucks were relegated in 2006 he signed with Supersport United where he was the club's top goalscorer for the 06/07 season. He was part of the Zambian 2006 African Nations Cup team which finished third in group C in the first round of competition, thus failing to secure qualification for the quarter-finals. He netted Zambia's opener against Sudan in the Chipolopolo's 3-0 win. Chamanga also scored Zambia's first goal at the 2006 African Nations Cup against Tunisia.
