Everything You Need to Know About Marine Batteries
Choosing the right battery is the most important decision when going electric. This guide covers everything you need to know about marine batteries in 2026.
Most popular choice. Excellent energy density, long lifespan, fast charging.
| Energy Density | 150-250 Wh/kg |
| Lifespan | 2,000-3,000 cycles |
| Cost | €500-€1,000/kWh |
| Charging Time | 4-8 hours |
Game changer! Higher density, safer, longer life. Just hitting the market.
| Energy Density | 300-400 Wh/kg |
| Lifespan | 5,000+ cycles |
| Cost | €1,500-€2,000/kWh |
| Charging Time | 2-4 hours |
Safe & affordable. Great for budget builds, slightly heavier.
| Energy Density | 100-160 Wh/kg |
| Lifespan | 3,000-5,000 cycles |
| Cost | €300-€600/kWh |
| Charging Time | 4-6 hours |
Formula: Range = (Battery kWh × 0.7) ÷ (Boat weight in tons × 0.5)
Example: 100kWh battery, 2 ton boat = (100 × 0.7) ÷ (2 × 0.5) = 70 nm range
Marinas across Europe now offer fast charging. Look for: