Solid State Marine
Solid State Marine manufactures solid-state marine batteries in 12V to 48V configurations, selling direct-to-consumer and through dealers to recreational boaters, boat OEMs, and anglers with claims of superior safety, weight, and runtime versus lithium-ion and AGM alternatives.
- Company typePrivate
- Founded2023
- HeadquartersWest Bridgewater, United States
- Headcount11–50
- GTM typeB2B and B2C
- OfferingHardware or Manufacturing
What Solid State Marine does
Solid State Marine LLC is a privately held US company founded in 2023 and headquartered in Pawtucket, Rhode Island, with battery assembly in Bridgewater, Massachusetts, and a returns/shipping facility in Raynham. The company designs, assembles, and sells solid-state marine batteries marketed as the first and only solid-state battery line dedicated to marine applications. Its customer base spans recreational boaters, fishing enthusiasts, professional anglers, charter captains, and boat original equipment manufacturers (OEMs) including Scout, Solace, Havoc, MagBay, Yellowfin, Onslow, and Volare Boats, supported by a Pro Staff ambassador program with elite competitive anglers.
The core product portfolio spans 12V, 24V, 36V, and 48V solid-state battery configurations with capacities from 60Ah to 600Ah, plus a 6TL thin-profile form factor for space-constrained installations. The technology replaces the flammable liquid electrolyte in conventional lithium-ion cells with a solid electrolyte, yielding non-combustible cells that pass deformation, puncture, and nail-penetration tests without thermal runaway. Technical features include IP67-rated enclosures, an operating temperature range from -4°F to 155°F without auxiliary heaters, 3,500+ cycles at 80% depth of discharge, 1C fast charging, built-in Bluetooth monitoring via iOS/Android apps, and protocol support for Victron, NMEA 2000, CAN bus, and RS-485. The company markets weight at half that of lithium-ion and one-quarter that of AGM, runtime up to 8x that of competing chemistries, and an 8-year warranty (5-year free replacement). Complementary third-party chargers from Victron, Delta-Q, Mastervolt, and Toro are resold alongside the batteries.
Solid State Marine operates a hybrid go-to-market combining direct-to-consumer e-commerce (solidstatemarine.com), an authorized US dealer network accessed via store locator and a wholesale portal at solidstatewholesale.com, and a Pro Staff ambassador channel. Battery prices range from $1,249 for an entry-level 12V 90Ah unit to $7,499 for a 24V 420Ah pack, with chargers priced between $220 and $1,080; all revenue derives from hardware sales. The company reports no external institutional investment in its corporate disclosures, though a $1.625M raise was recorded in May 2024 and the Berkshire Innovation Center was onboarded as a non-equity partner in September 2024. Leadership comprises CEO Tom Calef, a USCG-licensed captain and seven-time entrepreneur with prior experience in consumer devices, robotics, computer vision, and AI, and Chief Commercial Officer Kirk Fitzsimmons, a Harvard Business School graduate with 30+ years in the marine industry focused on OEM and distributor channels.
Solid State Marine firmographics
Firmographics- Name
- Solid State Marine
- Legal name
- Solid State Marine LLC
- Website
- https://solidstatemarine.com
- Company type
- Private
- Founded year
- 2023
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Solid State Marine manufactures solid-state marine batteries in 12V to 48V configurations, selling direct-to-consumer and through dealers to recreational boaters, boat OEMs, and anglers with claims of superior safety, weight, and runtime versus lithium-ion and AGM alternatives.
- Ownership category
- akta.pro rank
Solid State Marine industry classification
Industry- Product category
- Marine Batteries
- NAICS
- Battery Manufacturing (33591)
- SIC
- Electronic & Other Electrical Equipment (No Computer Equip) (3600)
- akta.pro primary industry
- Energy Storage Systems for Marine (Batteries, supercapacitors) (IMAJAHAJ)
- akta.pro secondary industries
- Solid-State Battery Materials & Cell Manufacturing (EUAFABAH), Battery Pack Manufacturing & Module Assembly (EUAFABAI), Battery Modules & Packs (Industrial/Commercial pack assembly) (IMAGAHAB)
Keywords
Where Solid State Marine is headquartered
LocationHeadquarters
- HQ city
- West Bridgewater
- HQ country
- United States
- HQ region
- North America
Offices3 records
Markets served
Solid State Marine business model
Business model- GTM type
- B2B and B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Technology or R&D, Personnel, Marketing or Sales, Infrastructure
Revenue model
- Battery Sales: Direct sales of solid-state marine batteries through e-commerce website and dealer network. Products include 12V, 24V, 36V, and 48V batteries with various capacities. Prices range from $1,249 to $7,499 depending on voltage and capacity.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | 12V Batteries - Entry Level |
| Unit Pricing | Pay-as-you-go | 12V Batteries - Mid Range |
| Unit Pricing | Pay-as-you-go | 12V Batteries - High Capacity |
| Unit Pricing | Pay-as-you-go | 24V Batteries |
| Unit Pricing | Pay-as-you-go | 36V Batteries |
| Unit Pricing | Pay-as-you-go | 48V Batteries |
| Unit Pricing | Pay-as-you-go | Battery Chargers |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels7 records
Solid State Marine product offering
Product offeringCore offering
Solid State Marine designs, assembles, and sells solid-state lithium batteries specifically engineered for marine applications. The company offers 12V, 24V, 36V, and 48V battery series along with a 6TL thin-profile variant, sold directly via its e-commerce site and through an authorized US dealer network, with complementary third-party chargers and a Bluetooth battery-monitoring mobile app.
Product overview
Solid State Marine is a marine battery manufacturer specializing in solid-state lithium battery technology for boats and marine applications. The core product offering consists of solid-state marine batteries organized by voltage: 12V (90Ah-600Ah), 24V (60Ah-420Ah), 36V (60Ah-300Ah), and 48V (60Ah-210Ah) series, plus specialized 6TL thin-profile variants. These batteries serve multiple marine applications including freshwater/saltwater trolling motors, electric boats, kayaks, sailboats, stabilizers, and thrusters. The company also sells complementary third-party battery chargers (Victron, Delta-Q, Mastervolt, Toro) and offers mobile apps (iOS/Android) for Bluetooth battery monitoring. All batteries feature built-in Bluetooth, IP67 waterproof rating, intelligent BMS protection, and compatibility with marine communication protocols (NMEA 2000, CAN Bus, RS-485, Victron). The company was founded in 2023 and is headquartered in Pawtucket, RI, with manufacturing in Bridgewater, Massachusetts.
Differentiator
Problem solved
Functional benefit
Products and services
- Solid State Marine Batteries (12V Series) 12V solid-state marine batteries from 90Ah to 600Ah for freshwater and saltwater boats, trolling motors, engine starting, and house loads. IP67-rated, Bluetooth-enabled, with NMEA 2000, CAN bus, RS-485, and Victron communication support.
- Solid State Marine Batteries (24V Series) 24V solid-state marine batteries from 60Ah to 420Ah designed for trolling motors, electric boats, and marine house power, delivering up to 1000 CCA for engine starting and high continuous discharge.
- Solid State Marine Batteries (36V Series) 36V solid-state marine batteries from 60Ah to 300Ah optimized for trolling motors and electric outboards, providing extended runtime with up to 300A continuous discharge.
- Solid State Marine Batteries (48V Series) 48V solid-state marine batteries from 60Ah to 210Ah designed for electric boats and high-power applications, scalable in series to over 100kWh at 500V.
- 6TL Battery Series Thin-profile solid-state batteries in Group 6TL form factor, available in 12V 330Ah, 24V 180Ah, and 48V 90Ah configurations for space-constrained marine installations.
- Victron Battery Chargers Third-party Victron Energy chargers resold by Solid State Marine, including Smart Solar MPPT, Blue Smart IP67 waterproof chargers, Orion XS DC-DC chargers, Skylla-IP65, Skylla TG, and MultiPlus-II inverter/chargers compatible with 12V, 24V, and 48V systems.
- Delta-Q IC650 36V Charger Industrial-grade 36V charger from Delta-Q with 18-21A output, microprocessor control, sealed construction, and 25 selectable charging algorithms for fleet and commercial marine applications.
- Mastervolt Mac Plus 12/48-15 Charger Bi-directional 12V/48V charger from Mastervolt with 3-step+ charge algorithm, wide DC input range, and compatibility with CZone, NMEA 2000, and MasterBus monitoring; supports up to 10 parallel units.
- SSM Battery Monitor App (iOS) iOS mobile application that connects to Solid State Marine batteries via Bluetooth to provide real-time state-of-charge, voltage, temperature, and battery control parameters.
- SSM Battery Monitor App (Android) Android mobile application that connects to Solid State Marine batteries via Bluetooth to provide real-time state-of-charge, voltage, temperature, and battery control parameters.
Quantifiable outcome
- 8x longer runtime than leading lithium or lead-acid batteries
- +4 more outcomes
Companies that use Solid State Marine
Customer profileNamed customers14 records
Segments7 records
Ideal customer profiles3 records
Solid State Marine technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
Feature7 records
Solid State Marine partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Victron EnergycoreVictron Energy provides compatible battery chargers and energy management systems. Solid State Marine batteries feature built-in Victron communication for plug-and-play integration with Victron GX devices, Cerbo, and VRM portal for real-time monitoring and control.
Scale indicators6 records
Recent moves6 records
Expansion highlights5 records
Solid State Marine competitors and assessment
Company assessmentDirect peers
- Dragonfly Energy (Battle Born parent): Public parent of Battle Born Batteries manufacturing LiFePO4 cells and packs. A scaled, vertically integrated competitor in marine energy storage with much greater capital and channel reach.
- Lithionics Battery: Marine and RV lithium battery manufacturer focused on high-rate, Bluetooth-enabled LiFePO4 systems for boats and yachts. Competes for the same OEM and premium boat owner customers.
- RELiON Battery: Major LiFePO4 battery maker serving marine, RV, floor cleaning, and industrial markets. Competes on similar voltage tiers, OEM fitments, and dealer/distributor channels across the same boatbuilder customers.
- Battle Born Batteries: Leading LiFePO4 marine/RV drop-in battery manufacturer with strong dealer network. Direct head-to-head competitor in the recreational marine lithium battery category, the same OEM/aftermarket channels Solid State Marine targets.
- Dakota Lithium: DTC and dealer-network lithium battery brand strong in marine, fishing, and powersports. Competes on weight, runtime, and warranty against the same end-user buyer of trolling-motor and boat batteries.
Broad incumbents
- Mastervolt: Established marine power electronics and lithium battery systems maker (now part of Brunswick). Sells chargers, inverters, and integrated battery systems that overlap with Solid State Marine's battery + charger offering into the same dealer/OEM channels.
- Victron Energy: Dutch incumbent in marine and off-grid energy systems — chargers, inverters, BMS, and monitoring — and an integration partner of Solid State Marine. Wider portfolio across power electronics, not batteries-as-core-business, but adjacent and ecosystem-defining.
- Brunswick Corporation (Mastervolt/Whaler/etc.): Largest US marine OEM and aftermarket conglomerate that owns Mastervolt and Mercury. A potential OEM customer, distribution partner, or acquirer that could bring substantial channel scale to a solid-state marine battery.
Emerging players
- QuantumScape: Solid-state battery developer primarily for automotive, but as a technology lineage peer signals where solid-state R&D is heading. Its commercial maturation or partnerships with marine OEMs would directly affect Solid State Marine's defensibility.
- LiTime (Lithium Time) / Ampere Time: Fast-growing low-cost LiFePO4 battery brand with deep e-commerce presence. Competes on price in the same 12V/24V/36V/48V marine and trolling-motor aftermarket that Solid State Marine sells into.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Solid State Marine social profiles
Digital presenceSolid State Marine financial estimates
Financial estimateRevenue estimate
Valuation estimate
Solid State Marine leadership team
Management profileNumber of profiles
Profiles2 records
Solid State Marine funding detail
Funding detailFunding overview
Funding rounds2 records
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Solid State Marine M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Solid State Marine
What does Solid State Marine do?
Solid State Marine designs, assembles, and sells solid-state lithium batteries specifically engineered for marine applications. The company offers 12V, 24V, 36V, and 48V battery series along with a 6TL thin-profile variant, sold directly via its e-commerce site and through an authorized US dealer network, with complementary third-party chargers and a Bluetooth battery-monitoring mobile app.
Is Solid State Marine a public or private company?
Solid State Marine is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Solid State Marine founded?
Solid State Marine was founded in 2023. It employs 11 to 50 people.
Where is Solid State Marine based?
Solid State Marine is headquartered in West Bridgewater, United States, in the North America region.
How does Solid State Marine make money?
One revenue line is on record: battery Sales.
Who are Solid State Marine's main competitors?
Direct peers on record are Dragonfly Energy (Battle Born parent), Lithionics Battery, RELiON Battery, Battle Born Batteries and Dakota Lithium. Broad incumbents are Mastervolt, Victron Energy and Brunswick Corporation (Mastervolt/Whaler/etc.). Emerging players are QuantumScape and LiTime (Lithium Time) / Ampere Time.
Does Solid State Marine have an API?
No public API is recorded for Solid State Marine.
What industry is Solid State Marine in?
Solid State Marine's product category is Marine Batteries. Its primary akta.pro industry code is IMAJAHAJ, Energy Storage Systems for Marine (Batteries, supercapacitors), with a secondary code of EUAFABAH, Solid-State Battery Materials & Cell Manufacturing. Its NAICS code is 33591 and its SIC code is 3600.