F1 2027 Batteries Will Store More Energy Under New Rules

Formula 1’s 2027 regulations will increase battery capacity, improve energy recovery and reshape how power is deployed throughout every lap.

The F1 2027 batteries will play a much bigger role under Formula 1’s next technical regulations. While much of the attention has focused on the changes to the internal combustion engine and electric motor, the increase in battery capacity could have an even greater impact on performance, energy management and race strategy.

The revised regulations are designed to improve energy deployment, reduce stress on power unit components and provide teams with greater flexibility throughout each lap.

Battery Capacity Will Increase in Two Stages

One of the biggest changes involves the maximum amount of energy that can be stored.

The new limits will be:

• 2026: 4.0 MJ
• 2027: 4.5 MJ
• 2028: 5.0 MJ

The larger battery capacity will allow teams to store more recovered energy and use electric power over longer sections of the lap.

Formula 1 will increase battery capacity as part of the 2027 power unit regulations.

More Efficient Energy Recovery

The electrical system will also receive significant revisions.

Key changes include:

• MGU-K output reduced from 350 kW to 300 kW.
• Energy recovery increased to 375 kW in 2027.
• Recovery capacity increased again to 400 kW in 2028.
• Internal combustion engine power gradually increased through 2028.

These adjustments are intended to improve efficiency while reducing peak energy demand.

The revised regulations aim to improve how electrical energy is recovered and deployed.

Greater Flexibility During Every Lap

With more available battery capacity, teams will be able to distribute electrical power more effectively throughout straights and acceleration zones.

The revised system is expected to:

• Extend electric power deployment.
• Improve overall energy management.
• Reduce power delivery limitations.
• Lower stress on power unit components.

The new configuration should also make energy deployment less sensitive to throttle application compared with the current generation of power units.

Additional Rule Changes for 2027

The regulations also introduce more flexible energy limits during specific race situations.

Among the updates:

• Higher energy recovery allowance during the formation lap.
• Increased recovery limits behind the Safety Car.
• Revised battery management procedures during qualifying out laps.

These measures are designed to reduce energy-related issues experienced under the current regulations while improving operational flexibility.

The new battery regulations are expected to improve efficiency and simplify energy management throughout a race weekend.