Robinson Helicopter Company has added the TB17 lithium-ion battery to its R66 options. TB17 by True Blue Power, a division of Mid-Continent Instrument, offers weight savings and what Robinson claims are improved starter performance and longer life.

At 16 lb, the TB17 is lighter than the R66's standard battery, which weighs 42 lb, and the optional high-capacity battery, which weighs 52 lb. Lithium-ion chemistry holds a higher charge voltage and provides a more constant discharge rate than lead-acid, which should deliver consistent, more reliable turbine starts. The battery's internal heater is designed to enhance functionality in cold temperatures as low as -40°C while typical battery life is eight years with minimal required maintenance every two years.

The battery is available on new aircraft at a cost of $6,900.