Mobile Marine Battery Replacement in St. Petersburg, FL
St. Petersburg has more shoreline than most people realize: open Tampa Bay along downtown and the Northeast neighborhoods, a string of bayous, and Boca Ciega Bay on the west side. Boats here range from day sailors to sportfishing boats that run out under the Skyway.
If your boat is in St. Petersburg, you don’t need to haul a 60-pound battery across a parking lot. We can install it at your dock, ramp or driveway. Installation is a flat $99 per battery ($249 for a 24V or 36V lithium bank); add it on the product page, or text (954) 743-0000 with questions. The $18 lead-acid core charge is waived when you book installation, because we take the old battery away.
You can shop lithium, AGM and lead-acid or house bank batteries online and add installation on the product page.
St. Petersburg waterways, ramps and marinas
The St. Petersburg Municipal Marina and Demens Landing anchor the downtown waterfront, with the Vinoy Basin just to the north. Coffee Pot Bayou and Bayou Grande wind through the Northeast neighborhoods, many of them lined with private docks. Weedon Island Preserve on the city’s north side is a popular paddling trail, and Maximo Park on the south side has a public ramp close to the Sunshine Skyway and the mouth of Tampa Bay.
Typical St. Petersburg boats
The Skyway area is famous for tarpon in spring and summer, and the bridges and fishing piers hold snook, Spanish mackerel and grouper. Inshore boats work the flats around Weedon Island and the south shore for redfish and trout. Downtown, the marinas are full of sailboats and cruisers that need house banks sized for overnight trips across the bay.
Heat, salt and battery care in St. Petersburg
Sailboats and cruisers in St. Petersburg often sit in slips on shore power. If you are moving to lithium, the charger and alternator setup need to match the new chemistry, so ask us about chargers when you text.
There is no real off-season here, so batteries work year round. The bigger risk is heat: a battery in a closed hull or a sunny driveway in July ages much faster than one kept cool. Charge after every trip, keep terminals clean and coated, and turn off the battery switch when the boat sits.
Florida’s Gulf coast is hard on batteries for two reasons: heat and salt. Battery life drops quickly when a lead-acid battery sits above 90°F, and salt air corrodes terminals and cables. Sealed AGM and lithium batteries resist both better than flooded batteries, and none of them need water topping.
Choosing a battery for your St. Petersburg boat
Sailboats and cruisers
Many sailboat owners around the Vinoy Basin stay with AGM or flooded batteries for simplicity and cost. Whichever you choose, keep the house bank and starting battery separate, and replace all batteries in a bank at the same time.
Offshore center consoles
Center consoles that run offshore from St. Petersburg usually have one cranking battery per engine plus a house battery for electronics, pumps and lights. For cranking, a Group 27 or 31 AGM with high marine cranking amps is the common choice. A lithium dual-purpose battery like the EPOCH 172Ah can serve as a house battery and an emergency start, and it weighs a fraction of an equivalent AGM.
Flats skiffs and bay boats
Most bay boats on Tampa Bay run a 24V or 36V bow-mount trolling motor plus a separate cranking battery for the outboard. A 36V lithium bank, such as a single EPOCH 36V or Interstate 36V battery, replaces three Group 27 or 31 lead-acid batteries and drops well over 100 pounds from the stern, which helps a skiff float shallower. Keep the cranking battery separate so a long day on the trolling motor never leaves you unable to start.
How it works
- Pick your battery online, or text us at (954) 743-0000 with your boat, motor and current battery size and we’ll help you choose.
- Add installation on the product page and enter your St. Petersburg ZIP code to confirm it’s in our installation area.
- We contact you to set a time and confirm where the boat is: dock, ramp or driveway. If you want installation, add it on the product page for a flat $99 per battery ($249 for a 24V or 36V lithium bank).
- Our installer fits the battery and takes your old lead-acid batteries, which waives the $18 core charge.
In-stock batteries for St. Petersburg boats
These are in stock now. Prices and stock update live on each product page.
- EPOCH 12V 300Ah Essential Series LiFePO4 Battery (3.84kWh) (12V 300Ah LiFePO4, Group 31 footprint, 58 lb, internal heating for cold charging)
- Interstate 31M-AGM 12V Group 31M AGM Dual Purpose Marine Battery – 925 CCA (12V 100Ah AGM, 925 CCA, Group 31M footprint)
- EPOCH 36V 50Ah Essential Series LiFePO4 Battery (1.92kWh) (36V 50Ah LiFePO4, Group 31 footprint, 35 lb, internal heating for cold charging)
- Battle Born 100Ah 12V GC2 LiFePO4 Deep Cycle Batteries (12V 100Ah LiFePO4, Group GC2 footprint, 31 lb)
- Interstate 27M-AGM 12V Group 27M AGM Dual Purpose Marine Battery – 850 CCA (12V 85Ah AGM, 850 CCA, Group 27M footprint)
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EPOCH
EPOCH 12V 300Ah Essential Series LiFePO4 Battery (3.84kWh)
$1,249.00or 4 interest-free payments of $312.25
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Interstate
Interstate 31M-AGM 12V Group 31M AGM Dual Purpose Marine Battery – 925 CCA
$459.95or 4 interest-free payments of $114.99
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EPOCH
EPOCH 36V 50Ah Essential Series LiFePO4 Battery (1.92kWh)
$749.00or 4 interest-free payments of $187.25
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Battle Born
Battle Born 100Ah 12V GC2 LiFePO4 Deep Cycle Batteries
Price range: $799.00 through $1,049.00or 4 interest-free payments from $199.75
Select options This product has multiple variants. The options may be chosen on the product page
St. Petersburg marine battery FAQ
How much is installation?
Installation is a flat $99 per battery ($249 for a 24V or 36V lithium bank), and you can add it on the product page when you order. Questions about your boat’s setup? Text us at (954) 743-0000.
Do you replace house batteries on sailboats in the downtown marinas?
Yes, we can install house and starting batteries for sailboats and cruisers in slips for a flat $99 per battery ($249 for a 24V or 36V lithium bank). Let us know the marina, the slip location and the battery size you have now, and whether you want to keep the same type or switch to lithium.
Can you install lithium batteries?
Yes, we install lithium (LiFePO4), AGM and flooded batteries for a flat $99 per battery ($249 for a 24V or 36V lithium bank). Add it on the product page when you order, or text us at (954) 743-0000 with questions. If you’re switching to lithium, check that your charger has a lithium profile; we sell chargers that do.
How do I set up a time?
Text us at (954) 743-0000. Tell us your ZIP code, the boat and where it is, and we’ll set up a time with you. To book installation, add it on the product page for a flat $99 per battery ($249 for a 24V or 36V lithium bank).
Do you install outside Pinellas County?
We install anywhere from Venice to Gainesville, FL, and we ship nationwide.
Nearby service areas
See all towns in Pinellas County, or the full Florida mobile service area. Details on shipping and freight are on our shipping page, and our local install page explains how installation works (a flat $99 per battery, $249 for a 24V or 36V lithium bank).