Marine is the toughest environment we engineer for. Constant low-level vibration that loosens terminals on lead-acid. Salt spray that finds every exposed surface. Heat, humidity and the kind of dormant winter storage that destroys a lead-acid bank quietly. Plus the duty cycle of a typical house bank - draw, recharge, draw, recharge, all day.

TITAN's response: anti-vibration silicone on every internal contact, conformal-coated BMS board, oversized cell-to-busbar welds and a metal case that doesn't flex in a seaway. The heater pad lets the battery accept a charge in cold storage. It uses the incoming charge current first, and only draws from the pack itself (up to 3.6A) if more energy is needed to bring the cells up to temperature - so when you fire the engine up in March, the house bank charges normally without you having to babysit it.

We're a member of British Marine, the UK trade association for marine industry suppliers. TITAN packs are in use across the country on commercial RIBs, sailing yachts, electric tenders and hybrid superyachts - and on bigger projects worldwide. The Monaco Energy Boat Challenge electric catamaran from DTU runs on a TITAN 180Ah bank.

ISO 23625:2025 is the international standard for lithium-ion batteries installed on small craft. It asks for a battery management system on every battery, cells and packs tested to IEC 62620 and IEC 62619, safe operating limits set by the manufacturer, and an installation that keeps the battery dry, secure and protected. ISO 13297 covers the rest of the boat's electrical installation. Here is where TITAN stands.

Alarms. Alarms can be set in the TITAN app. For an alarm at the helm before the battery disconnects, which ISO 23625 asks for on propulsion and safety-critical systems, connect the comms package to a compatible display such as a Victron GX screen, Simarine, Garmin or CZone.

Water. A TITAN case is IP67 with the comms ports closed and IP32 while a comms cable is fitted, so mount it in a dry place above the bilge water line, or in an enclosure that gives the protection.

Boats use more energy than people expect. A modest 35ft sailing yacht with a fridge, lights, instruments, autopilot, navigation electronics and a chartplotter typically draws 80-120Ah a day at anchor. Add an inverter for the toaster and the kettle and that climbs to 150-180Ah. A liveaboard or a charter boat with watermaker, dive compressor and powered windlass can easily hit 300-400Ah a day.

• Day sailing, lights, instruments, occasional fridge: 105-150Ah
• Cruising weekender, fridge running 24/7, fan, kettle: 180-230Ah
• Liveaboard, full kit, anchor watch: 230-460Ah in a single TITAN, or twin 230Ah in parallel
• Commercial / charter, watermaker / dive compressor: 460Ah-plus or a 24V bank

Run the battery size calculator with your typical loads and it'll recommend a model.

The TITAN comms package is built for marine integration from the start:

• Victron Cerbo / Nucleo / Ekrano / Color Control GX: full BMS-driven SOC, DVCC charge control, live cell voltages and temperatures. Victron integration guide.
• NMEA 2000 systems (Garmin, Raymarine, B&G, Furuno): NMEA gateway available, SOC and bank voltage on the chartplotter.
• Mastervolt / Quick / Bep / Sterling: compatible chargers - profiles on the charger compatibility page.
• Inverters and inverter/chargers: size the inverter to the battery's continuous rating, from 150A on the 100Ah and 120Ah up to 300A on the 460Ah and 520Ah, roughly 1.5kW to 3kW at 12V. Above that, batteries in parallel or a 24V bank.
• Solar: any MPPT controller with a lithium profile - Victron SmartSolar, Renogy, EPEver - works fine.
• The TITAN App V2: live monitoring with appliance recognition. Tell it the fridge runs every 20 minutes; it'll flag anything different.