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The FL-1650 battery was designed specifically for those with EFI systems and 1-2 stages of nitrous. Has been tracked tested repeatedly and been onboard one of the most winning cars in the 2018-19 season.


This battery also performs second to none in huge cubic inch nitrous gulping motors, or bracket racers looking to go several rounds without worries about battery failure. A great choice for Pro Stock, Pro Nitrous, Top Dragster, Top Sportsman, and Bracket racers alike. Specifically, for those with EFI systems and 1-2 stages of nitrous. Also, the perfect option for those switching over to Coil Over Plug systems like MSD CDI units.


Designed for TOTAL LOSS systems in mind (racers running with no alternator.) Massive cranking amps to start even the toughest engines, and plenty of capacity. If you are looking for the BEST look no further.

FL-1650 (16V 50AH)

SKU: FL-1650
  • The FL-1650 is a 16V 50ah battery that is 2nd to none!! We designed & built these batteries in house from cell design to our custom molded carbon fiber cases. Made W/ the safest, highest quality materials available. Do not be fooled by our batteries small size or feather-Lite weight. It is simply the BEST 16v on the market for high compression race engines!

    - Can be mounted in any configuration/Orientation

    - Can be wired in parallel or series configurations

    -4x Longer life expectancy

    **Pro Stock teams using shore power utlize this battery, teams not utilizing shore power may want to look at  the FL-1690.

  • Dimensions:

    Length: 6.400” (162.4mm)

    Width: 3.300” (83.8mm)

    Height: 6.100” (154.9mm)

    Weight: 6.8 LBS (2.49kg)


    Polarity Configuration: Left side Positive


    Battery Energy Specifications:


                 Nominal: 16.5

                 Charged: 18.3

    Capacity: 48 Ah (Lead acid equivalent/ PbEq)

                    16 Lithium amp hours

                    120 minutes of Reserve Capacity


    Cranking amps:  1000 cold cranking amps

                     1250 @ 75 degrees Fahrenheit (for 15 seconds)

                      3750 Pulse Cranking amps


    **Recommended Charger: FL-BC1615

    Other Charger options: FL-BC165 (These options are slower charger times)

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