Tracker Boat Batteries: Understanding The Dual Power System

Marine batteries are essential for a boat's accessories and electronics, and there are two basic types: cranking or starting batteries and deep-cycle batteries. Cranking batteries are designed to start the main engine and deliver large amounts of current for a short time. On the other hand, deep-cycle batteries are used to power electrical accessories such as trolling motors, fish finders, and radios. They can withstand repeated deep discharging and recharging without damage. Boats often have two battery types to ensure a reserve bank to start the engine and a large house bank for DC loads.

The two types of boat batteries

Marine batteries are essential accessories for boats, providing the power needed to start the engine and run electrical equipment. There are two main types of marine batteries: starting batteries and deep-cycle batteries.

Starting batteries, also known as cranking batteries, are designed to deliver a large amount of power in a short burst to start the boat's engine. They have thinner and more numerous lead plates, which provide more surface area to deliver the fast power required for engine cranking. The marine cranking amp (MCA) or cranking amp (CA) rating on the battery indicates its starting power. It is important to choose a starting battery with a rating that meets or exceeds the recommended value for your engine.

On the other hand, deep-cycle batteries are used to power electrical accessories such as trolling motors, fish finders, radios, lights, and pumps. These batteries can withstand deep discharge cycles without compromising their lifespan. They typically have fewer but thicker lead plates than starting batteries, which makes them better suited for powering accessories that draw power at a slower rate over extended periods. The reserve capacity (RC) rating of a deep-cycle battery indicates how long it can power a specific load before needing to be recharged.

In addition to these two main types, there are also dual-purpose batteries that can perform both starting and deep-cycle functions to some extent. These batteries are ideal for small boats where space or weight restrictions limit the number of batteries that can be installed. However, dual-purpose batteries may not start an engine as effectively as a dedicated starting battery and may have a lower power capacity than a comparable deep-cycle battery.

When choosing marine batteries, it is important to consider factors such as battery size, cranking amps (CA), amp hours (Ah), and reserve capacity (RC). It is also crucial to match battery chemistries between banks and to follow safety guidelines when working with batteries to prevent short circuits and electrocution.

Starting batteries

When selecting a starting battery, the most important feature to consider is cranking amps (CA). This is the discharge load that a fully charged battery can provide in 30 seconds. It usually takes the engine about 30 seconds to reach peak performance and start, so the CA is crucial. Check your boat's engine manual or consult your dealer to know how many cranking amps are needed.

Tracker Lithium Marine batteries are a great option for starting batteries. They provide increased capacity and higher performance while being lighter and longer-lasting than traditional marine batteries. They also require less maintenance and have a 5-year warranty. Lithium batteries are also safer, generating less heat than other lithium battery types and including a Battery Management System for extra protection.

Deep-cycle batteries

When selecting a deep-cycle battery, it is recommended to choose one that can store more power than what is usually required for offshore trips. Lithium deep-cycle batteries are a popular choice as they are lighter, provide consistent power, and have a longer lifespan than traditional lead-acid batteries. They also do not require a full charge and are maintenance-free.

Dual-purpose batteries

However, dual-purpose batteries generally have lower power capacity than a similarly-sized deep cycle battery. They are also more expensive than starting or deep-cycle batteries. Additionally, they may not start an engine as effectively as a true cranking battery, and they cannot endure as many deep discharge/recharge cycles as a dedicated deep-cycle model.

Lithium dual-purpose batteries, such as the Tracker Lithium batteries, offer several benefits over traditional lead-acid batteries. They provide increased capacity and higher performance in a lighter package, lasting longer and requiring less maintenance. They can be partially charged without sustaining damage, and they are maintenance-free. They also improve weight distribution and fuel efficiency, resulting in a faster plane and hole shot.

Battery weight distribution

• Battery Weight Impact: Batteries are heavy, and their weight can affect the performance and handling of a boat. A boat with batteries placed at the back (stern) may experience more drag and lower speeds. Moving batteries towards the front (bow) can reduce weight at the stern, improving speed and fuel efficiency. However, too much weight at the bow can cause "plowing," affecting the boat's ability to cut through waves smoothly.
• Battery Placement for Balance: Distributing battery weight evenly across the boat can help improve overall balance and handling. This is especially important for boats with multiple batteries, such as those with trolling motors. Moving batteries to the front compartments or using lighter lithium batteries can help achieve better weight distribution.
• Safety Considerations: Battery placement should also consider safety. It is generally recommended to keep batteries away from fuel tanks, fuel lines, and other flammable areas. Additionally, batteries should be secured to prevent them from moving during the voyage, as loose batteries can be a physical and fire hazard.
• Boat Size and Type: The impact of battery weight distribution varies depending on the size and type of boat. Smaller boats may be more sensitive to weight distribution, and the boat's hull design (deep V or modified V hull) can also influence how weight distribution affects performance and handling.
• Trolling Motor Batteries: Tracker boats, especially those with trolling motors, often have multiple batteries. Moving trolling motor batteries from the stern to the front compartments can free up space and reduce weight at the back. This adjustment may require additional wiring considerations.
• Performance and Handling: Adjusting battery weight distribution can impact the boat's performance and handling characteristics. Changes in weight distribution can affect how the boat sits in the water, its ability to plane, and how it handles waves and rough water conditions.
• Battery Type: The type of battery also influences weight distribution. Traditional lead-acid batteries are heavier, while lithium batteries are much lighter, offering improved weight distribution and fuel economy. Lithium batteries also have longer lifespans and require less maintenance.
• Battery Management: Proper battery management is essential. It is recommended to have separate starting and house batteries to avoid overloading a single battery. Dual-purpose batteries are an option for small boats to save space and weight but may have lower power capacity.

Frequently asked questions