Feather-Lite - Lithium Battery - 16 Volt

FL-S1690 / FL-S1690B Sportsman Series 16V Lithium Battery – 1,050 Cranking Amps, 8–9 lbs

Do you run an 850 horsepower Dirt Late Model, a 1,400 horsepower Factory Stock drag car, or a GT4 road course machine? No matter the discipline, the FL-S1690 / FL-S1690B Sportsman Series batteries deliver the power you need to spin over high-compression, high-horsepower engines with confidence.

These lightweight 16-volt lithium-ion batteries pack a punch with 1,050 cranking amps, 90 amp-hours (SLA equivalent) of capacity, and weigh just 8–9 pounds. With the same compact footprint as the FL-S12150 Series, they’re a direct-fit upgrade built on the proven Carbon Series technology—but at a budget-friendly price.

Perfect for racers who want the extra voltage and power of a 16V system.

• High-compression Dirt Late Models
• Factory Stock / High-output drag cars
• GT4 and competitive road course vehicles

• FL-S1690: For engines without alternators
• FL-S1690B: For engines with alternators

• Voltage: 16.5V
• Cranking Amps: 1,050
• Cold Cranking Amps: 875
• Amp Hour Capacity: 29Ah (90Ah SLA equivalent)
• Weight: 8 lbs (FL-S1690) / 9 lbs (FL-S1690B)
• Dimensions: 7.7” L x 5.1” W x 6.5” H

Compact, powerful, and race-proven—the FL-S1690 Series is the ultimate 16V upgrade for serious racers demanding serious power.