How to Winterize a Lithium Marine Battery
How to winterize a lithium marine battery: storage charge level, disconnecting, cold limits, in-boat vs indoor storage, heated batteries and spring startup.
Read moreMaintenance & Storage
Marine Battery Maintenance: The Complete Guide
Marine battery maintenance guide: routine care for flooded, AGM and lithium batteries, charging habits, cleaning, testing, storage and signs of trouble.
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Keeping Batteries Healthy on a Boat Lift or in a Slip
Boat lift and slip battery care: keeping batteries charged in the water or on a lift, shore power, solar, bilge pumps, lift motors and…
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A Monthly Marine Battery Checklist
Monthly boat battery checklist: quick checks for voltage, terminals, cables, hold-downs, water levels, chargers and lithium apps to catch problems early.
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How to Test Flooded Batteries with a Hydrometer
How to do a battery hydrometer test: what specific gravity tells you, step-by-step testing, reading charts, temperature correction and spotting bad cells.
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How to Water Flooded Deep-Cycle Batteries
How to add water to flooded marine batteries: when to check, how much to add, distilled water only, filling after charging, tools and common…
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Battery Sulfation: What Kills Lead-Acid Batteries
Battery sulfation explained: what it is, soft vs hard sulfation, causes, symptoms, how to prevent it and when desulfation or replacement makes sense.
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Equalizing Flooded Batteries: When and How
Equalizing flooded marine batteries: what equalization does, when to do it, how to equalize safely, voltages, warnings for AGM and lithium, and aftercare.
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Trailered Boats: Battery Care Between Trips
Trailer boat battery storage: keeping batteries charged between trips and in the off-season, disconnect switches, maintainers, covers, theft and towing tips.
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Self-Discharge: How Fast Batteries Lose Charge in Storage
Battery self-discharge rates for flooded, AGM, gel and lithium marine batteries, how temperature affects them, and how to plan charging during storage.
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