Pufei For Di2 External Battery Charger with Cable Electronic Variable-Speed Charger for SM-BTR1 7970 6770 Electronic Shifting

• Precision Interface Compatibility: Designed for a 1:1 fit, this external battery charger ensures seamless connection for SM-BTR1 and 7970/6770 for Di2 system. Enjoy effortless plug-in without looseness, eliminating concerns of charging failure or device damage from mismatched interfaces.
• Enhanced Fast-Charge Technology: Integrated electronic variable-speed charger chip intelligently manages output for significantly faster, safer charging. Experience consistent performance with minimal heat, elevating your charging efficiency beyond regular alternatives.
• Automatic Full-Charge Detection & Energy Saving: The battery charger adapter instantly shifts to a power-saving standby upon reaching full capacity. This guards your battery's core health, overcharge, swelling, or capacity fade for lasting battery strength.
• Clear Dual-Color Status Indicator: The power adapter charger features intuitive purple and red LED indicators - solid purple means charging, solid red means fully charged, and alternating flashes signal incomplete connection - so you always know the charging status at a glance.
• Reliable Multi-Layer Circuit & PC Enclosure: Delivering advanced electrical variable speed charger protection against dangers like overcurrent and short circuit, plus a resilient, anti-scratch PC outer , it keeps your charger looking new and functioning safely for years.

Specification: Origin: Mainland China Body Material: PC Product Color: Black Product Size: Approx. 4.6cm (1.81in) x 2.8cm (1.10in) x 2.6cm (1.02in) Net Weight: Approx. 33g Input Parameters: 5V-2A Compatible Battery: for SM-BTR1 Note: Due to different monitor settings and lighting conditions, the actual color of the item may vary slightly from the pictures. Thanks for your understanding! Please allow a 1-2 cm difference in measurements due to manual measuring. Package includes: 1 x Battery Charger Base 1 x Connecting Cable