Abyss Battery 12V 220Ah NMEA 2000 Dual Purpose Marine Lithium Battery - AB-12V220
Turn your helm into a command center. The ABYSS BATTERY® 12V 220Ah NMEA 2000‑compliant lithium battery combines true dual‑purpose performance (starting + deep‑cycle) with smart network visibility—so Garmin, SIMRAD, Raymarine, and other NMEA 2000 MFDs can display live battery status right on screen. Built in a marine‑grade IP67 sealed case and engineered with a unique 4‑terminal layout, it makes rigging cleaner, adds connection flexibility, and delivers massive, stable 12V power for modern boats.
Features
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Dual‑Purpose Muscle – High‑pulse cranking for confident starts and deep‑cycle stamina for house loads and sensitive electronics.
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NMEA 2000 Smart Integration – View state of charge, voltage, current, temperature, and health alerts* on your compatible MFD. Fewer mystery lights. More certainty.
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IP67 Marine Toughness – Fully sealed against dust and water (survives 1 m immersion up to 30 minutes). Ready for spray, washdowns, and the rough stuff.
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4‑Terminal Advantage – Four posts on the case let you dedicate connections (e.g., engine feed, house panel, chargers, accessories) without stacking lugs. Cleaner installs, fewer voltage drops.
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2.64 kWh On Board – At 12V × 220Ah ≈ 2,640 Wh, you’ll run radar, CHIRP sonar, MFDs, pumps, lights, and comms for hours—without the voltage sag of lead‑acid.
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Advanced BMS Protection – Built‑in battery management guards against over/under‑voltage, over‑current, short‑circuit, and temperature abuse.
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Low Self‑Discharge – Holds a charge in the off‑season so you’re ready on launch day.
What our Experts Think
Q&A
Maintenance Tips
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Correct charging profile: Use a LiFePO₄ charger (CC/CV ~14.2–14.6V). Avoid AGM/lead-acid modes to prevent BMS stress.
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Avoid deep discharge: Recharge before dropping below ~20–30% SOC to preserve long cycle life (>2000 cycles at full depth).
- Temperature discipline:
- Charge: 0°C to 55°C
- Discharge: −20°C to 60°C
- Never charge below freezing unless battery heating/BMS allows
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Use NMEA 2000 monitoring: Regularly check SOC, voltage, current, and temperature via MFD to detect abnormal draw or charging issues early.
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Load management: Keep continuous discharge within system limits (~200A class design) to avoid BMS cutoffs under heavy electronics + engine load.
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Terminal care: Inspect 4-post terminals for torque tightness, corrosion, and heat buildup—especially on high-current connections.
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Marine protection: IP67 sealed, but still rinse salt residue and keep connectors dry after washdowns.
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Storage best practice: Store at ~50–70% charge in a cool, dry environment if unused for extended periods.
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Parallel setup rule: If using multiple units, fully equalize voltage before connecting to avoid imbalance stress.
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Regular cycling: Periodic use helps maintain BMS balance and cell health—avoid long idle at 100% or near 0%.
Damage 
Loss 
Theft 
