Drivers returned to the pits, under a darkening sky, with engineers using torches in the garages before back-up generators came on and the session resumed about an hour later.
Hamilton will be out of contract at the end of next season.
Lewis Hamilton said he was working on the change and hoped to make it soon.
Hamilton did not specify any incidents where a biased decision had gone against him.
Mercedes' Lewis Hamilton said on his team radio, "This has been manipulated," after the Briton was passed by Max Verstappen on the final lap of Sunday's controversial season-ending Abu Dhabi Grand Prix.
Verstappen crossed the line in his Red Bull for his 64th Grand Prix victory to a huge ovation from the 115,000 crowd some 1.4 seconds ahead of McLaren's championship leader Lando Norris in second place.
Lewis Hamilton tested positive for COVID-19 and was forced to miss last year's penultimate Sakhir Grand Prix in December.
Lando Norris led a McLaren front row sweep in qualifying for the season-ending Abu Dhabi Grand Prix on Saturday
Team boss Christian Horner said Verstappen's lap of one minute 22.109 seconds was one of his best of the year and the Dutch driver sounded remarkably relaxed given the amount of pressure on him.
Formula One title rivals Lewis Hamilton and Max Verstappen took each other out of the Italian Grand Prix on Sunday, with Mercedes team boss Toto Wolff slamming the incident as a 'tactical foul'.
The Mercedes driver, with a record 94 wins, is the most successful Formula One driver of all time. The following details his progression to the 2020 title.
Lewis Hamilton will bring down the curtain on his Mercedes career in Abu Dhabi on Sunday as his past and future Formula One teams, McLaren and Ferrari, fight for a constructors' title to end years of waiting.
Lewis Hamilton vowed to continue speaking out despite Formula One's governing body clamping down on drivers
McLaren's Lando Norris swept to victory in a wet and wild Australian Grand Prix on Sunday, holding off defending champion Max Verstappen in a white-knuckle finish to a Formula One season-opener littered with crashes and safety cars.
Six times Formula One world champion Lewis Hamilton and MotoGP great Valentino Rossi are preparing for a ride swap in Spain on Monday, with the Briton "super excited" at the prospect.
Lewis Hamilton broke ranks with other drivers who said they were comfortable with assurances received from the governing FIA, even as other sports cancel events and competitions around the globe.
Hamilton, the sport's only Black driver and its most successful racer, has used his platform and profile increasingly to push for equal opportunities and speak out against racial injustice.
Hamilton said he only realised the significance of what he had done when he came into the pitlane after taking the chequered flag.
Britain's George Russell will stand in for Lewis Hamilton at Mercedes for Sunday's Sakhir Grand Prix after being released by Williams.
Norris's teammate Oscar Piastri, who spun off and finished ninth in his home race last Sunday after starting on the front row and challenging for the lead, has another good chance to rev up his season.
McLaren's Lewis Hamilton (107 points), Fernando Alonso (103) and Ferrari's Kimi Raikkonen (100) will battle it out for the Formula One championship in the season-ending Brazilian Grand Prix this weekend.
Valtteri Bottas won the battle but Lewis Hamilton won the war, securing his sixth Formula One world championship on Sunday, despite finishing second to his Mercedes team mate at the US Grand Prix.
Lewis Hamilton has used his platform more than ever this year to make his voice heard on subjects from racial injustice to diversity and the environment.
'Lewis tested negative for COVID-19 on Wednesday prior to completion of his self-isolation period in Bahrain'
Lando Norris roared to his second successive pole position, and third in four races, in a McLaren front row sweep with team mate Oscar Piastri
Seven-time world champion Lewis Hamilton overtook main rival Max Verstappen and Mercedes team mate Valtteri Bottas to win the Portuguese Grand Prix on Sunday and go eight points clear in the Formula One standings.
'It's been ultimately a really great race between two different teams and it ends with a bit of a ... negative. It does kind of feel like a deflated win'
Six time world champion Lewis Hamilton enjoys a 30-point lead in the championship after four races and is set to equal Schumacher's seven crowns.
Hamilton will equal Ferrari great Michael Schumacher's all-time win record if he takes his seventh win of the season on Sunday.
His unexpected title triumph ended 22-year-old Briton Lewis Hamilton's dreams of becoming the youngest champion in his debut season with McLaren.
Lewis Hamilton can clinch his fifth Formula One world championship at Sunday's US Grand Prix.
The Formula One world champion said it has taken him 32 years to understand the impact he was having.
'He is outspoken, he is playing his part and using his fame for positive purposes. He is a fantastic ambassador and having a knighthood will only increase his opportunities to do that work.'
Formula One champion Lewis Hamilton polarises opinion and may not get the recognition he deserves but history will appreciate his greatness, Mercedes team boss Toto Wolff said on Friday.
Ferrari fans had mocked up a picture of Lewis Hamilton as a cry baby ahead of the Italian Grand Prix but the Mercedes driver was not the one shedding tears
Lewis Hamilton is on course for his most successful campaign yet and can become only the third driver after Michael Schumacher and Sebastian Vettel to win 13 times in a season.
Hamilton's 98th career victory, from his 100th pole position, was his third win in four races
Abuse directed at Grand Prix racer Lewis Hamilton in Spain and an ugly confrontation between the India and Australia cricket sides provide depressing evidence that racism continues to blight international sport.
Lewis Hamilton tightened his grip on securing a fifth Formula One world title by coming from nowhere to claim a stunning pole position for the Singapore Grand Prix in his Mercedes on Saturday.
'The time for platitudes and token gestures is over'
