Lithium Battery Upgrades for Duffy & Electric Boats
Engineered lithium conversions for longer runtime, lighter weight, faster charging, and modern monitoring — built with marine-grade integration and OEM-level confidence.
Longer runtime · Reliability · Weight reduction · Faster charging · Victron monitoring
Old System vs. Modern Lithium
A properly engineered lithium upgrade transforms how your electric boat performs in harbor service — not just what sits in the battery compartment.
Heavy lead-acid battery banks
Lightweight lithium battery packs
Slow overnight charging cycles
Rapid, efficient lithium charging
Voltage sag under load
Stable power delivery all day
Limited harbor runtime
Extended all-day electric operation
Ongoing watering & maintenance
Maintenance-free lithium architecture
Why EBR for Lithium Battery Upgrades
EBR engineers lithium upgrades as complete propulsion systems — not drop-in battery swaps. Every install accounts for charger compatibility, BMS behavior, wiring capacity, monitoring, and how your Duffy actually runs in harbor service.
We integrate Victron monitoring, marine-grade cabling, proper fusing, and safety interlocks so your boat gains modern range and reliability without compromising electrical integrity.
From power planning through water testing, you get OEM-level execution, clear documentation, and a system built for Southern California electric harbor operation.
Our Lithium Upgrade Process
Evaluate
We assess your existing battery bank, charger, wiring, motor load, and daily usage to define the right lithium architecture and runtime targets.
Design
Custom lithium layout, BMS selection, Victron monitoring plan, charger strategy, and integration path — engineered for your boat and operating profile.
Install & Configure
Professional install with marine-grade wiring, proper mounting, charger setup, monitoring configuration, and full electrical verification before launch.
Water Test & Delivery
On-water validation of runtime, charging behavior, voltage stability, and propulsion performance — with clear handoff on operation and care.
Range, Weight & Reliability Gains
Engineered lithium upgrades deliver measurable improvements across runtime, charging, stability, and daily harbor operation.
All-day harbor operation with properly sized lithium banks
Significant mass savings vs. lead-acid for better efficiency
Shorter dockside turnaround with lithium-optimized charging
Consistent delivery under throttle without heavy sag
More efficient propulsion with less electrical stress
Lithium installs · Electrical integration · Commissioning
Battery install · Marine integration
Victron system · Clean integration
Lithium Upgrade FAQs
How long do marine lithium batteries last?
How much runtime can I expect after a lithium upgrade?
How long does charging take with lithium?
Will lithium work with my existing charger and electrical system?
Are lithium upgrades safe on electric boats?
What maintenance do lithium systems require?
Ready to upgrade your Duffy or electric boat to lithium?
Tell us how you use the boat — we'll evaluate your system and design the right lithium architecture for range, reliability, and harbor performance.
Service Request