Group 24F Automotive Batteries

3D rendering of the BCI (Battery Council International) Group 24F battery for cars and trucks.

Electrical Specifications:
12 Volts
250 - 710 Cold Cranking Amps (CCA)
50 - 95 Reserve Capacity Minutes
Right Positive Polarity

Mechanical Specifications:
Length: 10 3/4" (27.3 CM)
Width: 6 13/16" (17.3 CM)
Height: 9" (22.9 CM)
Body Style: Traditional with Flat Classical top
Terminals: Right Positive Top Post STD/SAE
Flanges: Side Split and Raised Hold Down Ledge

Electricals:

   We measure battery power with two numbers: Voltage and Capacity.  All 24F batteries provide 12 Volts and strong international standards have made sure that everyone agrees on what Voltage means and how to measure it.  Capacity, however, varies between manufacturers and brands.  To complicate matters further, we measure automotive battery capacity in a variety of ways.
   Capacity measures the number of electrons a battery can provide.  In general, we measure battery capacity in amp hours, or watt hours, however, in automotive applications, we care more about how much electrical power a battery can supply instantaneously to start the engine.  We measure this instantaneous power in CA, Cranking Amps, and CCA, Cold Cranking Amps.  Batteries store chemical energy and release it through temperature sensitive chemical reactions.  In cold climates, we only care about CCA, because they report how much instantaneous power the battery can supply at zero degrees Fahrenheit.  When new, Group 24F batteries must provide a minimum of 250 CCA and a maximum of 710 to meet standards but many manufacturers exceed the requirements.
   Modern vehicles increasingly rely on their batteries to power peripheral electrical features like sound and entertainment systems, navigation computers, USB ports, light bars, winches, inverters, communications devices, and countless other specialized electrical equipment.  We call these features deep cycle applications because they draw smaller amounts of power over longer time periods.  We measure deep cycle capacity in Amp Hours or Reserve Capacity Minutes.  To meet specifications, new group 24F batteries must provide at least 50 Reserve Capacity Minutes and a maximum of 95 but many batteries exceed these capacity requirements.

Mechanicals:

   Group 24F batteries have Traditional body shapes with overall dimensions of: 10 3/4" X 6 13/16" X 9" or 27.3 CM X 17.3 CM X 22.9 CM.  The 10 3/4" (27.3 CM) length includes the flanges.  The 6 13/16" (17.3 CM) length includes the flanges.  The 9" (22.9 CM) height includes the Flat Classical top and the terminals plus any protruding acid caps, but not any raised lifting straps or handles.
   Vehicles can fasten group 24F batteries with top mounted hold down straps/bars or by gripping any of its Side Split and Raised Hold Down Ledge flanges, and connect electrically via leads fit for Right Positive Top Post STD/SAE terminals.

Example Battery Images:

Group Size 24F.  Energizer Max E24F  by Clarios 700 CCA Left-Positive polarity SAE-STD terminals.
24F by Clarios.  
Marketed as Energizer Max
Part#: E24F.
Group Size 24F.  Energizer Max E24F  by Clarios 700 CCA Left-Positive polarity SAE-STD terminals.
24F by Clarios.  
Marketed as Energizer Max
Part#: E24F.
Group Size 24F.  Infiniti 999M1-QC24F Made in Mexico  by Clarios 700 CCA 130 Min.  RC Left-Positive polarity SAE-STD terminals.
24F made in Mexico by Clarios.  
Marketed as Infiniti
Part#: 999M1-QC24F.
Group Size 24F.  Infiniti 999M1-QC24F Made in Mexico  by Clarios 700 CCA 130 Min.  RC Left-Positive polarity SAE-STD terminals.
24F made in Mexico by Clarios.  
Marketed as Infiniti
Part#: 999M1-QC24F.
More example images coming soon.  

Where to Buy:

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