Mobile Marine Battery Replacement in Nokomis, FL
Nokomis sits on the north side of the Venice Inlet, with Casey Key across the bay and a lot of boat traffic heading out to the Gulf.
Marine Battery Source installs marine batteries in Nokomis and the rest of Sarasota County. You pick the battery and we install it at the boat, whether it sits at a dock, on a trailer in the driveway or at a ramp. To have us install the battery, add installation on the product page for a flat $99 per battery ($249 for a 24V or 36V lithium bank). There is no core charge on a lead-acid battery when we install it and haul the old one away.
Not sure what fits? Browse lithium, trolling motor or cranking batteries, or text us a photo of your current battery.
Nokomis waterways, ramps and marinas
North Jetty Park on the north side of the Venice Inlet is a popular fishing and boating spot. Casey Key, a narrow barrier island, lies between the Gulf and the Intracoastal. Dona Bay and Roberts Bay wind through the mainland neighborhoods.
The Venice Inlet is one of the main Gulf access points for southern Sarasota County, so the jetties and inlet see a lot of boat traffic on weekends. Casey Key’s narrow road and private docks make it a mostly residential area.
Fishing and boats in Nokomis
The Venice Inlet jetties hold snook, redfish and sheepshead, and the Gulf beyond holds grouper and snapper. Bay boats, center consoles and pontoons all use the inlet.
Keeping batteries healthy in Nokomis
Inlet runs can mean a bumpy ride. Secure your batteries well and choose a vibration-resistant AGM or lithium battery.
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.
In Sarasota’s heat, sealed AGM and lithium batteries outlast flooded ones. For offshore boats, keep cranking and house circuits separate. For boats that sit for weeks, lithium’s low self-discharge helps.
Which batteries fit Nokomis boats
Bay boats and flats skiffs
For a skiff or bay boat that spends the day poling and creeping along the flats near Casey Key, 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.
Center consoles and offshore boats
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 Nokomis owners add a lithium house battery so the electronics never touch starting power. Check your engine maker’s cranking amp requirement before you choose.
Pontoon boats
Most pontoons on Venice Inlet 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.
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 Nokomis 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.
Recommended products
These are in stock now. Prices and stock update live on each product page.
- EPOCH 36V 50Ah Essential Series LiFePO4 Battery (1.92kWh) (36V 50Ah LiFePO4, Group 31 footprint, 35 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)
- Dakota Lithium DL+ 12V 60Ah Dual Purpose, 1000 CCA LiFePO4 Battery (12V 60Ah LiFePO4, 1000 CCA, Group 24 footprint, 16.5 lb)
- Interstate LI31M36V50 36V 50Ah Group 31M Lithium Marine Battery (36V 50Ah LiFePO4, Group 31M footprint)
- 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 36V 50Ah Essential Series LiFePO4 Battery (1.92kWh)
$749.00or 4 interest-free payments of $187.25
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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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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 LI31M36V50 36V 50Ah Group 31M Lithium Marine Battery
$1,204.95or 4 interest-free payments of $301.24
Questions we get from Nokomis boaters
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.
What should I have ready?
Make sure we can reach the battery compartment and that the boat is accessible at the dock, ramp or driveway. A photo of the current battery label helps us bring the right size.
Do you install batteries in Nokomis?
Yes. Nokomis is inside our installation area, which runs from Venice to Gainesville, FL. Installation is a flat $99 per battery ($249 for a 24V or 36V lithium bank), added when you order on the product page.
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).
Is there a core charge on lead-acid batteries?
Lead-acid and AGM batteries carry an $18 core charge per battery. It is waived when you book installation and we take your old battery.
Other towns near Nokomis
See all towns in Sarasota 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).