3pin Extension Cable: Extends the connection between your G2.1 light head and Power Pack, giving you flexible mounting options for helmet, bar, or frame setups. Features the durable keyed 3-pin connector for a secure, weatherproof connection. The cable is 150cm long. This is a replacement cable. The 3-Pin Extension Cable is already included with all G2.1 light systems. Gloworm 3pin to USB-C Battery Cable - Long: Connect your G2.1 Power Pack to any USB-C PD charger for fast, convenient charging. This cable features a durable keyed 3-pin connector for a secure, weatherproof connection to your battery. Compatibility: G2.1 External Battery Lights: Use this cable to charge your G2.1 Power Pack. This cable is included with all G2.1 external battery light systems.• CX Core Lights: Connect an external G2.x Power Pack to your CX Core light for extended runtime.Note: This is a replacement cable for G2.1 systems or an add-on accessory for CX Core users looking to extend their light’s runtime with an external battery. Available in two lengths: normal (24cm) and long (130cm). Gloworm 3pin to USB-C Battery Cable: Connect your G2.1 Power Pack to any USB-C PD charger for fast, convenient charging. This cable features a durable keyed 3-pin connector for a secure, weatherproof connection to your battery. Compatibility: G2.1 External Battery Lights: Use this cable to charge your G2.1 Power Pack. This cable is included with all G2.1 external battery light systems.• CX Core Lights: Connect an external G2.x Power Pack to your CX Core light for extended runtime.Note: This is a replacement cable for G2.1 systems or an add-on accessory for CX Core users looking to extend their light’s runtime with an external battery. Available in two lengths: normal (24cm) and long (130cm).