Choosing The Right Battery Size For Your Boat Lift

When it comes to choosing a battery for your boat lift, there are several factors to consider. The size of the battery will depend on the weight of your boat, the frequency of use, and the depth of water in which the lift is installed. A Deep Cycle Battery is recommended for its ability to withstand full discharge without losing power, but it's important to opt for a bigger size, with the smallest recommended option being a 600MCA and the best being an 800MCA. A 12-volt battery is a popular choice, with some lasting up to 10 years with the help of a solar charger.

A solar panel can be used to charge a boat lift battery

Modern boats typically have two types of batteries: a starter battery and a deep cycle battery. Starter batteries produce a burst of power to start the boat's motor, while deep cycle batteries have thicker plates to provide consistent power for trolling and running appliances like GPS and lights.

When choosing a solar panel, consider the size and efficiency rating. A higher efficiency rating means more power output, so you may need fewer panels. The ideal solar panel size will also depend on the size of your boat, energy needs, and battery capacity. Smaller boats with minimal power needs can usually run on a single 250-watt solar panel, while larger boats will require more robust panels.

In addition to the solar panels, you will also need a charge controller to regulate the flow of current to the battery and prevent overcharging. High-quality connectors and cables are also necessary to minimise energy loss between the solar panels, charge controller, and battery.

When installing your solar panels, choose a location with adequate sunlight and no obstructions. You can install the panels on the rooftop of your boat or opt for portable solar panels that can be placed on the deck. Remember to consider the mounting hardware to ensure the panels are securely installed.

By following these guidelines and choosing the right components, you can effectively use solar panels to charge your boat lift battery and keep your boat's appliances running smoothly.

A 12-volt winch with a solar charger

Now, let's discuss the battery. When it comes to battery size, bigger is indeed better. The smallest recommended size is a 600MCA, but an 800MCA would be ideal. You'll also want to make sure you get a deep cycle battery, as this type is better suited for the longer periods of energy usage that a boat lift requires. A starting battery, on the other hand, is designed for short bursts of intense energy usage, like when starting a car engine. Additionally, consider getting multiple batteries if you use your boat frequently. Just keep in mind that this will increase your charging time as well.

When it comes to specific battery recommendations, a Deep Cycle Marine Group 27 battery with at least 550 CCA's (Cold Cranking Amps) is a popular choice for boat lifts. Brand-wise, Exide and DieHard are two reputable options. If you're looking for a more affordable option, Walmart also offers well-reviewed batteries for boat lifts.

Finally, keep in mind that proper battery maintenance is crucial. Be sure to keep your batteries charged during the winter months and consider investing in a good charging system to prolong their life.

A start/deep cycle (dual) battery

When choosing a start/deep cycle (dual) battery for your boat lift, there are a few things to consider. Firstly, you'll want to make sure it has enough power to start your boat's engine. The RELiON HP line, for example, can provide up to 800 amps for two seconds, which is more than enough to start most boat motors.

Another important factor is the size of the battery. Marine batteries typically come in group sizes, with the most common being Group 24, Group 27, Group 31, and 8D. The size you need will depend on the power demands of your boat and the space you have available. If you have a smaller boat with lower power requirements, a Group 24 or Group 27 battery should suffice. For larger boats with more powerful engines and more onboard electronics, you may need a Group 31 or 8D battery.

It's also important to consider the brand and type of battery. Exide and DieHard are two popular and reliable brands that are often recommended for boat lifts. You'll also want to decide between a lead-acid or lithium battery. Lithium batteries tend to be more expensive upfront, but they offer several advantages, including longer shelf life, constant power, temperature resistance, faster charging, and lightweight construction. Lead-acid batteries, on the other hand, are more budget-friendly and have a proven track record of reliability.

Finally, don't forget to consider the charging system for your battery. A solar charging system is a great option for boat lifts, as it can keep your battery charged even when you're not using your boat. However, you may also need a manual charger or a lithium battery charger to ensure your battery stays fully charged and maintains its health.

By considering these factors and choosing a start/deep cycle (dual) battery that meets your specific needs, you can ensure you'll have reliable and efficient power for your boat lift.

A cranking battery

When choosing a cranking battery, you should consider the Cold Cranking Amps (CCA) rating, which measures the number of amps a battery can deliver at 0°F for 30 seconds without the voltage dropping below 7.2 volts. This is important for boat owners with large engines, especially diesel and high-compression gas engines, as they require a high CCA rating.

The Marine Cranking Amps (MCA) is similar to CCA but is measured at 32°F, resulting in higher numbers.

When selecting a cranking battery for a boat lift, it is important to consider the size and weight of the boat, as well as the depth of the water where the lift is installed. A larger, heavier boat will require more power to lift, and the battery will need to be able to provide sufficient amperage.

Additionally, the battery size should be considered. For a boat lift, a bigger battery is generally better, with a minimum recommendation of a 600MCA and an optimal size of 800MCA.

It is worth noting that while a cranking battery can be used for a boat lift, a deep cycle battery may be a more suitable option, as it can handle longer periods of power draw.

A deep cycle battery

Deep cycle batteries are also known for their long lifespan, with some users reporting usage for up to 10 years with proper care and maintenance. They are a popular choice among boat owners, with many opting for well-known brands such as Exide, DieHard, and Optima. These batteries are often paired with solar chargers to maintain their charge and maximise their lifespan.

When considering a deep cycle battery for a boat lift, it is important to take into account factors such as the weight of the boat, the depth of water the lift is installed in, and the frequency of use. Additionally, multiple batteries may be necessary if the boat is used frequently, as this will impact the charging and discharging rate.

Deep cycle batteries are a popular choice for boat lifts due to their ability to handle the specific power demands of hydraulic systems and their durability, even when fully discharged. With proper selection and maintenance, they can provide reliable power for boat lifts for many years.

Frequently asked questions