Engine Tools for BMW Z4 M Roadster S54 (2003-2008)

Operation is simple—charging starts automatically upon connection, without needing to disconnect the battery from the vehicle. The LITHIUM US will reset any low voltage protection electronics (Battery Management System) at the beginning of the charge. Charging can be manually restarted anytime using the 'Reset' button.

The CTEK LITHIUM US is a fully automatic, 'connect and forget' charger with 8 charging steps, including a testing sequence to determine if the LiFePO4 battery can accept and hold the charge, a unique maximization step to restore full capacity, and patented maintenance charging to ensure optimal performance even after long periods of inactivity. Splash-proof and dustproof (IP65), the LITHIUM US is safe and easy to use, protecting vehicle electronics with spark-free, reverse polarity protected, and short-circuit proof features. It also comes with a 5-year warranty from CTEK and a LIFETIME REPLACEMENT guarantee from us!

Features:

• Comprehensive LiFePO4 Battery Care: Innovative and patented system designed to recover, charge, and maintain LiFePO4 batteries, enhancing performance and prolonging lifespan.
• Safety First: Spark-free operation and reverse polarity protection ensure user safety; delivers exceptionally clean voltage and current without surges or spikes, protecting vehicle electronics. Charging can be done without disconnecting the battery from the vehicle.
• Plug and Play: Easy to use with simple plug-and-play functionality, and includes a manual reset option.
• Advanced 8-Step Charging: The patented 8-step process tests battery condition, charges, and maintains to ensure optimal LiFePO4 battery life and performance. Float/pulse maintenance provides ideal care during inactivity.
• Prolongs Battery Lifespan: The distinctive features of CTEK chargers work together to maximize performance and extend the lifespan of LiFePO4 batteries.