Marine Batteries Shipped to South Padre Island, TX
South Padre Island sits at the southern tip of Texas, across the Lower Laguna Madre from Port Isabel and a few miles from the Mexican border.
We don’t have a shop in South Padre Island. Marine Battery Source is an online store, and we ship to South Padre Island and the rest of Texas. Lithium batteries over $150 ship free by curbside truck freight to the lower 48. Chargers and accessories ship free when your cart reaches $150. Lead-acid and AGM batteries ship free by curbside truck freight too.
South Padre Island waterways
Brazos Santiago Pass, at the south end of the island, connects the Laguna to the Gulf, with long jetties on either side. The Lower Laguna Madre is a shallow, clear bay between the island and the mainland, and the Queen Isabella Causeway links the island to Port Isabel.
The Laguna Madre is one of the few hypersaline lagoons in the world, saltier than the Gulf in places, so salt residue builds quickly on terminals and battery boxes. Rinse after every trip.
What people run and fish for in South Padre Island
Redfish, speckled trout and snook in the Laguna, and red snapper, king mackerel and billfish offshore. Bay boats, center consoles and pontoons are common.
Climate, storage and winterizing in South Padre Island
South Texas heat is tough on batteries. Keep them charged and shaded where possible, and favor lithium or AGM.
The northern Gulf Coast has long, hot summers and mild winters, with salt air and humidity year round. Heat is the main battery killer, so keep batteries charged and ventilated. Sealed AGM or lithium batteries are a good fit for boats that live in the water or on lifts.
Hurricane season runs from June through November. Before a storm, charge and disconnect batteries, and if you haul out, store small lithium batteries indoors.
Battery types and sizes for South Padre Island
Offshore center consoles
If you run twin or triple outboards, replace cranking batteries as a matched set. AGM batteries in Group 31 size are a dependable starting choice for big outboards, and many South Padre Island owners add a lithium house battery so the electronics never touch starting power. Check your engine maker’s cranking amp requirement before you choose.
Flats skiffs and bay boats
For a skiff or bay boat that spends the day poling and creeping along the flats near Brazos Santiago Pass, trolling motor capacity is the number that matters. Measure your current batteries (group size, voltage and how many) before you order. If you stay with lead-acid, Group 31 deep-cycle batteries give the most runtime per battery; if you move to lithium, one 36V battery wired for your motor makes the system simpler and lighter.
Pontoon boats
Most pontoons on the Lower Laguna Madre run a single 12V battery for the engine, stereo, lights and maybe a small trolling motor. That works until the music runs through a long afternoon at anchor. A dual-purpose battery, AGM or lithium, handles both cranking and accessory loads better, and a second battery on a switch keeps starting power in reserve.
Freight and delivery to TX
- Free lithium freight: lithium batteries over $150 ship free, curbside, to the lower 48.
- Parts and chargers: free shipping when your cart subtotal is $150 or more.
- Lead-acid and AGM: free curbside truck freight to the lower 48, the same as lithium.
- Scheduling: the carrier calls the delivery phone number you give at checkout to set a delivery window. An adult needs to be there to inspect and sign.
Popular picks
Good starting points for South Padre Island boats:
- 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)
- Dakota Lithium DL+ 12V 60Ah Dual Purpose, 1000 CCA LiFePO4 Battery (12V 60Ah LiFePO4, 1000 CCA, Group 24 footprint, 16.5 lb)
- Interstate 27M-AGM 12V Group 27M AGM Dual Purpose Marine Battery – 850 CCA (12V 85Ah AGM, 850 CCA, Group 27M footprint)
- Interstate LI31M36V50 36V 50Ah Group 31M Lithium Marine Battery (36V 50Ah LiFePO4, Group 31M footprint)
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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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Dakota Lithium
Dakota Lithium DL+ 12V 60Ah Dual Purpose, 1000 CCA LiFePO4 Battery
$599.00or 4 interest-free payments of $149.75
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Interstate
Interstate 27M-AGM 12V Group 27M AGM Dual Purpose Marine Battery – 850 CCA
$414.95or 4 interest-free payments of $103.74
South Padre Island shipping FAQ
Who schedules the delivery?
The freight carrier calls the delivery phone number you enter at checkout to set up a delivery window. Someone needs to be there to inspect the shipment and sign.
Do chargers and accessories ship free?
Chargers, accessories and lithium batteries of $150 or less ship free when your cart subtotal is $150 or more. Otherwise a flat shipping rate applies, shown at checkout.
Is lithium shipping really free to South Padre Island?
Yes. Lithium batteries over $150 ship free by curbside truck freight to addresses in the lower 48 states, including South Padre Island.
Nearby locations
See every Texas location on our Texas shipping page, browse all shipping locations, or shop lithium, trolling motor, cranking and charger categories. Full terms are on our shipping policy.