Frequently Asked Questions

Deep-cycle lithium batteries are designed to provide steady power over long periods and handle repeated charge and discharge cycles. They are ideal for trolling motors, marine electronics, RVs, solar systems, fishing electronics and other applications that require sustained power.

In many applications, yes. A LiFePO₄ battery can replace a similarly sized lead-acid or AGM battery while offering more usable capacity and less weight. Always verify voltage, physical dimensions, terminal configuration and charging compatibility before replacing your existing battery.

Use a charger with a LiFePO₄-compatible charging profile that matches the voltage of your battery. Some existing chargers may be compatible, but the charging specifications should always be checked before use.

Certain Pro-Guide lithium batteries can be connected in series or parallel depending on the model. Batteries used together should be the same model, capacity, age and state of charge. Always check the specifications for the individual battery before building a battery bank.

Because LiFePO₄ batteries do not contain free-flowing liquid like flooded lead-acid batteries, they offer significantly more installation flexibility. Follow the mounting recommendations provided for your specific battery.

Disconnect the battery from loads and charging sources before long-term storage. Store it in a dry location within the temperature range specified for the battery and periodically check its state of charge.

A dual-purpose battery is designed to provide both the high-current output needed to start an engine and the sustained energy needed to power electronics and accessories.

If the battery's starting specifications meet the requirements of your engine, yes. Check the engine manufacturer's minimum cranking requirements and compare them with the specifications of the Pro-Guide battery you are considering.

Yes. Dual-purpose batteries are designed for applications where one battery may need to start the engine while also powering equipment such as fish finders, live sonar, pumps and other onboard electronics.

A starting battery prioritizes high cranking power. A dual-purpose battery balances starting power with additional usable capacity for electronics and accessory loads.

Use a charger with a charging profile compatible with the battery's LiFePO₄ chemistry and voltage. Always verify the charging requirements listed for the individual battery.

Dual-purpose lithium batteries are especially useful on boats with substantial electronics loads because they combine engine-starting capability with capacity for onboard electronics. The proper battery size depends on your engine and total electronics load.

A lithium starting battery is designed to deliver the high burst of current required to start an engine or motor. It is optimized differently from a battery designed primarily for long-duration deep cycling.

Compare the battery's cranking specifications with the minimum requirements provided by your engine manufacturer. Voltage, cranking output, physical dimensions and terminal orientation should all be confirmed before purchase.

Starting batteries are primarily designed for engine starting. If you also need significant capacity for electronics, trolling motors or other continuous loads, a dual-purpose or deep-cycle model may be more appropriate.

Some starting batteries can support auxiliary electronics, but the amount of available runtime depends on the battery's capacity and the combined load of your equipment. For high electronics demand, consider a dual-purpose battery.

Possibly, depending on the charger. Confirm that its charging voltage and profile are compatible with the requirements of your Pro-Guide lithium battery.

AGM stands for Absorbent Glass Mat. AGM batteries are sealed, maintenance-free lead-acid batteries designed to provide reliable power through repeated discharge and recharge cycles.

AGM batteries are sealed and do not require adding water. Keep the terminals clean, avoid excessive discharge and recharge the battery promptly after use.

Use a charger with an AGM-compatible charging profile. Many modern smart chargers support AGM batteries, but the charger's voltage and settings should be verified before use.

Yes, deep-cycle AGM batteries are commonly used for trolling motors and other marine accessory loads. Choose the battery size and reserve capacity based on the trolling motor and expected runtime.

Fully charge the battery before storage, disconnect it from loads and periodically monitor its state of charge. Recharge it when necessary to prevent prolonged storage in a discharged condition.

AGM typically has a lower initial purchase price, while lithium offers lower weight, greater usable capacity and longer cycle life. The better choice depends on your application, budget, charging system and desired performance.

AGM starting batteries are designed to provide strong cranking power for starting marine engines and other equipment while offering a sealed, maintenance-free design.

Marine Cranking Amps, or MCA, measures the battery's ability to deliver starting current under marine temperature conditions. Compare the battery's MCA rating with the requirements specified by your engine manufacturer.

It can support normal onboard loads, but if your electronics draw substantial power while the engine is off, a dedicated house/deep-cycle battery or dual-purpose solution may be more appropriate.

No. AGM batteries are sealed and do not require periodic water refilling.

Use a quality charger with an AGM charging profile and the correct voltage for the battery.

Flooded deep-cycle batteries are designed for applications requiring repeated discharge and recharge cycles, including marine, golf cart, RV, industrial and utility applications.

Yes. Electrolyte levels should be periodically inspected and the battery should be kept properly charged. Follow the maintenance instructions for the specific battery.

State of charge can be checked using resting voltage. On serviceable flooded batteries, specific gravity can also be measured with a hydrometer for a more detailed indication of charge.

Fully charge the battery before storage and periodically check its charge level. Flooded batteries naturally self-discharge over time and should not be allowed to remain discharged for extended periods.

No. Flooded lead-acid batteries contain liquid electrolyte and should remain in their specified upright operating position.

Yes, when the application supports it. Series connections increase system voltage, while parallel connections increase available capacity. Batteries connected together should be properly matched.

Check the individual product designation. Starting batteries are optimized for engine cranking, while dual-purpose models combine cranking capability with additional cycling capacity.

CCA and MCA indicate starting performance, while reserve capacity measures how long the battery can provide sustained power under a defined load. Starting applications typically prioritize cranking performance, while accessory-heavy applications also benefit from greater reserve capacity.

Yes, provided the battery meets your engine's starting requirements and your boat's electrical demands.

Inspect serviceable flooded batteries periodically, particularly during periods of frequent use or high temperatures. Follow the maintenance instructions provided with the battery.

Use a charger designed for flooded lead-acid batteries and select the appropriate voltage and charging profile.

Match the battery voltage to your golf cart's electrical system. A 36V cart requires a compatible 36V system, a 48V cart requires 48V and a 72V cart requires 72V. Do not change system voltage without confirming compatibility with the controller, motor and other components.

In many carts, yes. Converting to lithium can reduce weight and provide greater usable capacity, but voltage, charger compatibility, physical fit, wiring and controller requirements must be checked.

A lithium-compatible charger matched to the battery voltage and charging requirements is recommended. Do not assume the original lead-acid charger is compatible.

Range varies based on battery capacity, vehicle weight, terrain, tire pressure, driving speed, accessories and driving style. Higher amp-hour capacity generally provides greater available driving range.

Reducing battery weight can improve efficiency and vehicle responsiveness. Lithium batteries also maintain more consistent voltage through the discharge cycle compared with traditional lead-acid batteries.

Follow the recommendations for your specific battery and charger. A properly matched smart charger should manage the charging cycle automatically, but long-term storage procedures may differ.

Match the charger's supported battery chemistry, system voltage, number of banks and charging amperage to your battery setup.

Each bank is an independent charging output. A two-bank charger can charge two compatible battery circuits, while a three-bank charger can charge three.

Some Pro-Guide chargers offer selectable charge profiles on individual banks. Compatibility varies by model, so check the charger's specifications for supported chemistries and voltages.

Approximate charging time depends on battery capacity, charger output and how deeply the battery has been discharged. As a basic estimate, divide the amp-hour capacity that needs to be replaced by the charger's amperage. Actual charging time can vary as the charger completes its charging stages.

Pro-Guide on-board chargers are designed for installed applications when mounted according to the product instructions. Follow all mounting, ventilation and wiring requirements provided with the charger.

Only when the charger's specifications include a compatible lithium/LiFePO₄ charging profile for the voltage of your battery.

Match the charger voltage, chemistry and connector with the battery specifications. Never use a charger simply because the connector physically fits.

Charging time depends primarily on the battery's capacity, its current state of charge and the charger's output amperage.

Follow the instructions for the specific charger. Smart chargers typically manage the charging stages automatically, but the charger must be correctly matched to the battery.

Only if that battery chemistry is specifically supported by the charger. A lithium-only charger should not be assumed to support AGM or flooded batteries.

Connector type varies by charger. Check the product specifications and product images to confirm compatibility with your installation.

Every Pro-Guide kit lists the exact batteries, charger and accessories included on the product page. Review the “What's Included” section before ordering.

The components in Pro-Guide battery and charger kits are selected to work together for the intended application.

It depends on the application. Some installations may require cables, mounting hardware, terminal adapters or other accessories that are not included unless specifically listed.

A kit simplifies product selection by combining compatible components into one package and may also offer package pricing compared with purchasing the components individually.

Contact Pro-Guide before ordering if your installation requires a different battery, charger or accessory configuration.

The exact components vary by kit and are listed on the product page. Kits may include starting, electronics or trolling-motor batteries together with the appropriate charging equipment.

Consider your trolling motor voltage, engine starting requirements, number and type of electronics and desired runtime.

That depends on the kit configuration. Some systems separate starting, electronics and trolling-motor loads, while others combine functions. Review the included battery configuration before ordering.

If a charger is included, it will be specifically listed in the kit contents on the product page.

Potentially. Any expansion should maintain compatible battery models, voltages and system configuration.

At minimum, the battery system must be compatible with the cart's voltage and electrical system. Depending on the cart, the conversion may also require a compatible charger, cables, mounting components or other accessories.

Start with your cart's system voltage, make/model and available battery compartment dimensions. Confirm these against the specifications of the conversion kit.

Check the individual kit's “What's Included” section. If a charger is included, its model should be clearly identified.

Some carts may require mounting adjustments because lithium battery dimensions can differ from the original lead-acid battery bank.

Typically yes. Lithium battery systems are generally substantially lighter than equivalent lead-acid battery banks.

Cable size depends on current draw, cable length and system voltage. Higher-current applications generally require larger conductors to reduce voltage drop and heat.

Check the terminal type, connector type, cable length and hardware size listed on the product page.

If the cable specifications meet the requirements of the battery system, they may be used for appropriate battery interconnections. Always follow the wiring diagram for your battery configuration.

Undersized cables can create excessive resistance, voltage drop and heat, reducing system performance and potentially creating a safety risk.

Compare the internal tray dimensions and mounting specifications with your battery's dimensions before ordering.

The product page will identify any hardware included with the tray or mounting system.

Check the material and intended application listed for the specific product.

Properly securing a battery reduces movement and vibration and helps protect terminals, wiring and the battery case.

Match the internal dimensions of the box to the length, width and height of your battery, including adequate clearance for terminals and cables.

Compatibility depends on the box dimensions and application. Always follow the installation and ventilation requirements of the battery being installed.

Check the individual product page for included straps, hardware or mounting components.

A battery box helps secure and protect the battery while reducing accidental contact with the terminals and surrounding equipment.

Check the booster pack's specifications for supported engine types and sizes before use.

Performance depends on the condition of the vehicle battery and the capabilities of the booster. Follow the jump-start procedure included with the product.

Recharge it after use and periodically during storage so it is ready when needed.

If the model includes USB or accessory power outputs, those ports can be used with compatible devices.

Choose a cable long enough to safely reach between vehicles or batteries without stretching the cable.

Heavier-gauge cables can carry higher current with less voltage drop, which is particularly important for engine starting.

If the cable specifications and clamps are appropriate for the battery and application, they can be used for compatible 12V starting systems.

Follow the vehicle or battery manufacturer's recommended jump-start procedure and connection sequence.

NMEA 2000 is a standardized marine networking system that allows compatible electronics and sensors to communicate over a shared network.

Confirm the connector type and network requirements shown on the product page and compare them with your existing installation.

That depends on the accessory and your existing network. Check the “What's Included” section and your current network configuration.

Many NMEA 2000 components use standardized connections, but the network must be properly powered and terminated. Follow the manufacturer's installation instructions.

Refer to the sizing information provided on the individual product page before ordering.

Follow the washing and care instructions on the garment label.

Refer to Pro-Guide's current return and exchange policy for eligibility and instructions.