Full Throttle Battery Brand Profile and AGM Guide
Full Throttle is Fullriver Battery's performance AGM battery line, built for vehicles that need starting power and support for additional electrical loads. Its applications extend from cars and trucks to off-road vehicles, powersports and car-audio systems. For a buyer planning an upgrade, the important questions are fitment, reserve capacity, charging compatibility and how the battery will work with the rest of the vehicle.
12 Volt Outlet's current Full Throttle selection covers nine FT-Series battery models. This guide explains the relationship between Full Throttle and Fullriver, the technology behind the range and the practical checks that help turn a promising specification into an appropriate choice.
Full Throttle and the Fullriver story
Fullriver dates its beginnings to 1995. The company produces several battery families for different applications, including its DC deep-cycle range and Full Throttle performance batteries. Full Throttle belongs to that manufacturing background, with a particular focus on the demands of enthusiast vehicles and their accessories.
A documented milestone in the brand's automotive presence is its participation at SEMA. In an October 2023 article, Fullriver stated that Full Throttle had exhibited at the annual automotive aftermarket event since 2017. That establishes a history of engagement with vehicle builders and the aftermarket without confusing the first exhibition with the battery line's founding date.
Today, Fullriver distinguishes the Full Throttle FT Series from the Full Throttle Starting FTS Series. The FT range includes dual-purpose batteries for starting and accessory use, while the FTS family is positioned around starting applications, particularly powersports. Check the complete model name when comparing batteries bearing the Full Throttle name.
What makes an FT-Series battery different?
Full Throttle FT batteries use absorbed glass mat, or AGM, lead-acid technology. The electrolyte is held in absorbent glass material within the battery. Fullriver describes its FT construction as thin-plate pure lead, commonly shortened to TPPL, combined with compressed cells and a durable case.
Those design choices are intended to support high-current demand and resistance to vibration. They help explain why the range appears in performance-car, off-road and audio applications. They do not remove the need to check the exact battery's physical dimensions, charging requirements and intended use.
Fullriver describes FT as a dual-purpose design. In practical terms, that means a combination of engine-starting capability and the ability to support discharge-and-recharge use. A starting requirement and an accessory-energy requirement are different jobs, and an appropriate battery needs to be evaluated against both. Repeated deep discharge still affects service life, so a dual-purpose label is not an invitation to run the battery flat.
The Full Throttle selection at 12 Volt Outlet
The store's current FT-Series listings are FT610-47, FT680-48, FT825-34, FT840-24F, FT850-94R, FT890-49, FT930-65, FT965-27F and FT1100-31. These model numbers identify different combinations of case size, terminal arrangement and electrical specifications. They should be treated as distinct fitment choices.
FT610-47
The FT610-47 is specified by Fullriver at 12 volts, 610 cold-cranking amps and 50 Ah at the 20-hour rate. Its published dimensions are 9.49 by 6.89 by 7.48 inches, with a weight of 42.11 pounds. These figures make it a useful example of why capacity and fit need to be considered together.
Fullriver also lists 55 Ah at the 100-hour rate and 43 Ah at the five-hour rate for this same battery. The different figures describe different discharge tests. Compare matching rates when evaluating one battery against another.
FT840-24F
The FT840-24F is listed at 12 volts, 840 cold-cranking amps and 75 Ah at the 20-hour rate. Fullriver gives dimensions of 10.87 by 6.77 by 8.95 inches and a weight of 54.01 pounds. Its named Group 24F configuration is a starting point for a fitment check, alongside the actual dimensions and terminal positions.
FT1100-31
The FT1100-31 is a larger option, with manufacturer-listed figures of 12 volts, 1,100 cold-cranking amps and 110 Ah at the 20-hour rate. Its published dimensions are 12.99 by 6.81 by 9.33 inches, and its weight is 75.18 pounds.
The FT1100-31 demonstrates the practical tradeoff that accompanies greater capacity: mounting space, weight and secure support become substantial considerations. Check the exact terminal version as well. Similarly named batteries can use different connection hardware or have a different overall height.
Understand the ratings before comparing models
Battery specifications answer several different questions. Reading the label as a group of separate measurements makes comparison more useful than choosing the largest number.
- Nominal voltage: The system voltage class. Confirm that the battery matches the vehicle and equipment requirements.
- Cold-cranking amps: A starting-performance rating under specified cold test conditions. It is relevant to cranking demands, rather than being a direct rating of audio-system wattage.
- Amp-hours: A capacity figure tied to a stated discharge rate. Compare C20 with C20, for example, and keep the test conditions in view.
- Reserve capacity: A timed discharge measure at a stated load. Fullriver publishes both 25-amp and 75-amp reserve figures for many FT models, so the test current needs to accompany the number.
For example, the FT1100-31 is listed at 230 minutes at 25 amps and 50 minutes at 75 amps. Those figures do not promise the same runtime for an amplifier playing music, where current demand changes with the signal, volume and efficiency. Use the manufacturer's performance data to support a system-specific estimate.
Check fitment before choosing capacity
Begin with the vehicle's required battery type and fitment information. Then compare the exact Full Throttle model against the existing mounting location. Case dimensions, total height, hold-down method, terminal orientation and cable reach all need to agree.
Do not rely on a group-size label alone. Check the dimensional drawing and terminal layout, especially when cross-referencing several regional size names. Allow clearance above terminals and around the installed cables. A battery that sits in the tray can still be unsuitable if the hold-down cannot secure it or the positive connection is too close to surrounding metal.
For newer vehicles, establish whether the service procedure includes battery registration or configuration after replacement. Keep the vehicle's battery-monitoring and charging requirements in the plan. An AGM upgrade should be checked against the specific vehicle rather than assumed compatible from nominal voltage alone.
For a custom installation, tell the installer where the battery will be mounted, what equipment it will supply and whether it must also start the engine. Provide the exact battery model and charging-system details. That information is more useful than a general request for the biggest battery that fits.
Using Full Throttle in a car-audio system
Fullriver specifically markets FT batteries for car audio, including systems with substantial amplifier demand. A battery can supply stored energy during changing loads, but the alternator and charging system still have to replenish that energy. Evaluate the complete electrical system before treating a new battery as a solution to voltage drop.
Useful checks include the battery's condition, charging voltage under the intended operating conditions, cable sizing, connections and ground paths. A system used mostly while driving has a different energy pattern from one played for extended periods with the engine off. For parked listening, preserve enough starting reserve and plan how the battery will be recharged.
Additional batteries need a deliberately designed installation, including charging compatibility and appropriate circuit protection. Do not select a battery bank from amplifier peak-wattage labels alone or assume that adding capacity makes an undersized charging system adequate. Have the design assessed around realistic current demand and use.
Installation and care
AGM construction eliminates routine water top-ups, but the battery still needs safe handling and a sound installation. Fullriver's manual calls for protective equipment, insulated tools and ventilation while charging. Its pressure-relief valves may release gas if the battery is excessively overcharged.
Secure the battery, protect exposed connections and follow the model's specified terminal torque. Correct cable sizing and clean, properly tightened connections matter at high current. Fullriver permits upright or side mounting where appropriate and prohibits inverted mounting. Follow the applicable vehicle and battery instructions for the complete installation.
Use a charger or charging profile compatible with the battery's AGM requirements. Fullriver's charging guidance accounts for voltage, current and temperature; the presence of a generic battery setting is not enough to establish compatibility. If the charger documentation is unclear, verify its exact make and model before use.
Before extended storage, fully charge the battery and address parasitic loads in accordance with the vehicle's procedures. Arrange periodic checks or suitable maintenance charging for the actual storage conditions. Hot conditions and connected electronics change how quickly a parked battery loses charge. Keep the purchase record and model details available for future testing or support.
Choosing your Full Throttle battery
A good shortlist starts with verified fitment, then compares starting performance, capacity, reserve and charging needs. Include the weight and installation work in the decision. For an audio build, consider the battery alongside the alternator, power wiring and the way you actually listen.
Use the individual Full Throttle product pages at 12 Volt Outlet to review current listings and options. Confirm the exact model's manufacturer specifications before ordering, particularly where a fitment label or capacity figure needs clarification. Careful matching at this stage makes the complete upgrade easier to plan.
Full Throttle frequently asked questions
Who makes Full Throttle batteries?
Fullriver Battery makes the Full Throttle line. Fullriver traces its beginnings to 1995 and offers other battery families for different applications, including dedicated deep-cycle products.
Are Full Throttle FT batteries lithium?
No. The FT batteries covered here use AGM lead-acid construction with thin-plate pure-lead technology. Follow their AGM charging requirements rather than applying a lithium charging profile.
Are FT and FTS the same product line?
They are separate families under the Full Throttle name. FT is the performance dual-purpose range discussed in this guide. FTS is the Full Throttle Starting range, with its own model specifications and application focus.
Can one battery support any size car-audio system?
No universal amplifier-wattage limit can be assigned from a battery's CCA or Ah figure alone. Actual demand, charging capacity, wiring, listening duration and the need to retain starting reserve all affect the design.
Can a Full Throttle battery be installed on its side?
Fullriver permits side mounting where the application allows it, but prohibits upside-down mounting. Confirm the exact installation instructions, secure the battery and maintain suitable clearance, ventilation and terminal protection.
Does maintenance-free mean I can ignore charging?
No. AGM batteries need correct charging and suitable care during storage. Maintenance-free refers to the absence of routine water addition; it does not remove the need to check battery condition, connections or charger compatibility.
