NEW 72V Beast 2.0 Slim Pack - 21700 CYC X1 Pro Favorite

Beast 2.0 Slim 72V Battery Pack

Designed, assembled, and tested in Ontario, Canada.

The Beast 2.0 Slim Pack is a high-performance lithium-ion battery designed for powerful mid-drive and high-power e-bike systems. Its long, slim profile (54 mm thick) allows installation in locations where traditional battery packs will not fit, making it especially popular for dual-suspension frames and high-power setups.

This battery is frequently paired with motors such as the CYC X1 Pro, Stealth-style builds, and other 1000 W–5000 W electric drive systems.

For the 72 V configuration, the system consists of two 36 V battery packs connected in series, allowing flexible mounting options. A series cable is included.

Key Features

• Long slim pack design for unique mounting locations
• Built with high-quality 21700 lithium-ion cells
• Designed for high-power e-bike systems up to 5000 W
• Integrated high-quality BMS for protection and reliability
• XT60 discharge connector for high current output
• DC 5.5 × 2.1 mm charge port
• Includes charger and mounting accessories

Dimensions

Length: 500 mm
Width: 101 mm
Thickness: 54 mm

(19.7" × 4" × 2.1")

Battery Options

72 V 16.8 Ah — Molicel P42A
High-discharge performance cells
• Up to 50 A continuous / 150 A peak
• Ideal for 1000 W–5000 W systems

72 V 20 Ah — Samsung 50E / 50G
High-capacity range cells
• Up to 40 A continuous
• Ideal for 1000 W–3000 W systems

72 V 20 Ah Plus — Tabless 21700 Cells (50XG / RS50 / EVE50PL)
Premium performance cells with improved thermal and cold-weather performance
• Up to 50 A continuous / 150 A peak
• Ideal for 1000 W–5000 W systems

Included

• Battery pack(s)
• Charger
• Series connection cable (for 72 V setup)
• Mounting accessories

Custom Builds Available

Need a custom configuration, connector, or mounting solution?
Contact us — we specialize in custom battery packs for high-performance e-bike systems.