Safe and powerful batteries for the marine environment
Marine electric batteries – safe, powerful & waterproof
The ePropulsion range of marine electric batteries are designed for high performance and the harsh marine environment. These LiFePO4 electric outboard batteries and eSeries batteries offer cleaner power and are incredibly energy efficient.
The power range goes from 1 kWh to 144 kWh output (when used in parallel) to complement ePropulsion’s industry leading electric motors. All ePropulsion batteries can be charged at the same time as discharging power, with solar or hybrid generated power.
E Series batteries
The high performance E Series batteries will power any ePropulsion outboard or POD motor, as well as other brands of 48V systems for marine propulsion, domestic or solar systems. All ePropulsion batteries are recyclable.
The batteries are designed for a long lifespan. Even when used daily over many years, you can expect a life of 3000 cycles to 80% of the original capacity.
The built in Battery Management System means that the cells will only discharge to a maximum safe level to protect and extend the battery life. When not in use, the batteries will ‘hibernate’ and discharge themselves, so there is no need for any manual discharging. Up to 16 eSeries batteries of the same model can be connected in parallel to an ePropulsion motor and additional rechargers are available.
E Series marine electric batteries – tech spec
2048 Wh LiFePO4* battery
4096 Wh LiFePO4* battery
8960 Wh LiFePO4* battery
|Waterproofness||Robust waterproof shell (IP67 rated)|
|Longevity||Reliable battery management system - protects battery life|
|Battery life||Long life span 3000 cycles at 80% DoD (depth of discharge)
|Battery capacity||2048 Wh||4096 Wh||8960 Wh|
|Max continuous discharge current||40A||80A||150A|
|Charging time: 110V charger||2 hours||4 hours||9 hours - one charger
4.5 hours - two chargers in parallel
|Charging time: 220V charger||2 hours||3 hours||6 hours - one charger
3 hours - two chargers in parallel
|Recharging||mains, 12 volt, solar, wind, auxillary etc|
|Recharging with Hydro generation||Yes||Yes||Yes|
|Dimensions||42 x 39 x 20.7cm |
16.5” × 15.4” × 8.2”
|55.5 × 44 × 21.2 cm|
21.9” × 17.3” × 8.4”
|50 × 51.5 × 26 cm
19.7” × 20.3” × 10.2”
|Weight||28 kg / 61.7 lbs||48 kg / 105.8 lbs||87 kg / 191.8 lbs|
|Parallel connection||Up to 16 battery packs|
All the E-Series batteries are LiFePO4 (Lithium Ion Phosphate). This makes them 30% lighter, but enables around 50% more usable capacity than standard AGM lead-acid batteries.
LiFePO4 batteries have a longer life of up to 3000 cycles. A typical AGM battery can only achieve 300 to 500 cycles.
Spirit integrated battery specification
Electric marine batteries for outboards
Battery Capacity: 1276 Wh – extensive capacity
Battery weight: 8.7kg
Rechargeable: 12 volt auxiliary output or solar panel
Regenerative charging: Yes – with Spirit 1.0 Evo
Standard 8.5 hours
Fast Charger 3.5 hours
Battery life: 500 cycles @ 80% DOD
Buoyant: will float if you drop it overboard
E series battery compatible
Change to electric powered outboards – clean efficient performance
All ePropulsion electric marine batteries are designed for maximum efficiency, performance and safety.
The affordable lithium E Series batteries are compact and energy dense and weigh 75% less than the equivalent lead acid battery. They are designed to achieve the most efficient unit price on the market, as low as $0.46 per WattHour.
Multiple E Series batteries of the same size can be connected in parallel, to increase power output. Each model has a different battery management system and cell configuration, hence only the same model can be connected in parallel.
It is possible to use a 3rd party lead acid battery with the ePropulsion range, although the ePropulsion motor will not be able to access real time battery status.
Comparison of E Series with AGM battery
E 80 battery
4 x 12 volt 130 AH AGM batteries
Live test of ePropulsion E Series battery
Testing was done in a 26ft sailing yacht with a displacement of approximately 2 tons.
Set up with an ePropulsion 3kW motor and one E-175 series battery with a capacity of 9kWh.