Batteries have always been a crucial element for all boating enthusiasts. In addition to their primary function, providing power to start the engines, they also supply energy to all onboard electronic accessories and digital systems that make navigation more comfortable and safer. Careful spring maintenance is the key to ensuring long battery life and a trouble-free summer. Here’s how to make sure your battery is ready for the new season.
In the following blog, you’ll learn how to take care of your batteries in five simple steps. Important: always wear protective goggles and gloves when working with batteries. Be mindful of metal objects and avoid wearing watches or jewelry during maintenance.
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Clean the battery terminals
Make sure the battery terminals are clean and shiny. Use a wire brush and a mixture of baking soda and water to neutralize any traces of corrosion. Clean gently, then reinstall and tighten the terminals. During the summer, check and tighten the terminals once a month to prevent poor connections. A solid connection is essential to ensure the battery charges properly.
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Check the electrolyte level
If you have a flooded lead-acid battery, it’s important to maintain the correct water level. Use only distilled water, tap water can cause calcium sulfation and shorten battery life. Remove the filler caps and check the level. If the internal plates are exposed, add water until they are fully covered. Check regularly, especially on hot days and after heavy use.
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Apply a thin layer of grease to the terminals
To prevent electrical issues, use dielectric grease, a silicone-based lubricant that insulates, seals, and protects connections while also making them waterproof. This grease prevents corrosion and helps keep the battery terminals clean over time.
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Secure the battery firmly
Make sure the battery is securely fastened in its compartment. During navigation, sudden movements of the boat can cause it to slide or bounce. A poorly secured battery is dangerous—fixing it firmly in place is essential for both safety and longevity.
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Fully charge the battery
Recharge the battery using a suitable battery charger, connecting the cables correctly: negative (–) to negative (–) and positive (+) to positive (+). Make sure to set the correct charging current. Remember: a battery’s lifespan depends on how often and how deeply it is discharged. The deeper the discharge, the fewer cycles the battery will deliver.
Why it’s important to have a battery monitor on board
On board, we rely more and more on reliable electrical power. The only way to know how much energy is left and when it’s time to recharge is to have a battery monitor. A good monitoring system clearly and intuitively shows battery voltage, current flowing in and out, energy consumption, remaining amp-hours, and state of charge as a percentage. Keeping batteries clean and fully charged will extend their lifespan, while monitoring them with a solution like PICO allows you to maximize your time on the water, without worries.
