Compact, powerful battery for inboard electric motors

G102-100 battery for electric boating

The ePropulsion G102-100 battery is a high-performance, durable lithium iron phosphate (LiFePO4) battery for electric boating.

In addition, the G102-100 batteries are compatible with a variety of ePropulsion motors, including the I-Series inboard motors. They can be connected in parallel to power different motors, with up to four batteries in one cluster, and multiple clusters within an entire system.

G102-100 battery

Fully compatible with ePropulsion motors

The G102-100 powers the 96V 10kW to 40kW ePropulsion motors, such as the I-Series inboard motors.

High energy density

You can be confident these  batteries are powerful. With a three times higher energy density than the equivalent lead acid batteries it makes them smaller and lighter.

70% lower weight

Compact in size, they weigh 70% less than the equivalent lead-acid battery. By reducing overall weight on board means you have greater hull efficiency and better use of your power resources. 

Built in safety – BMS

Feel totally secure knowing the built-in intelligent Battery Management System maximised onboard safety. Designed for electric boating the BMS is integrated with the eSSA system. Battery sensors monitor all functions including voltage levels, temperature, chargers and fault detection.


Easy to install

The G102-100 has been developed for quick and easy installation.

The connectors can be installed with a simple one-handed operation. With four terminals to easily connect batteries in parallel.

Long life cycle

Your electric marine motors will be powered far longer and outlast the equivalent capacity lead-acid battery.

Built-in durability means the G102-100 battery runs at 3000 cycles at 80T DOD (depth of discharge).


Durable & waterproof IP67

Also designed for a reliable and long life,tThe external stainless steel housing is highly weather resistant and is waterproof IP67 rated. It is very hard wearing and impact resistant.

Fast charging

Recharging is quick. With a 1C rating, the G102-100 is charged from 0-100% in one hour.



G102-100 ePropulsion battery control panel

The G102-100 battery features

Managing the battery is easy too. The control panel includes:

  • LED digital display for battery management data
  • Charge communication port
  • Motor communication port
  • CAN communication port
  • Vent valve
Maintenance free

Plug, play and charge


70% less weight than acid or agm battery


Waterproof and shockproof

Space saving

Compact size saves valuable space on board


Inherently safe chemistry. BMS protection


Recycling and redistribution is easy

Technical specification – G102-100 battery for marine electric motors

ChemistryLithium Iron Phosphate (LiFePO4)
Rated Voltage102.4 V
Capacity10240 Wh / 100 Ah
Battery Life3,000 cycles at 80% DOD
Weight105 kg
Dimensions700 x 500 x 300 mm (27.6 x 19.7 x 11.8 in)
Cut-off Voltage83.2 V
Final Charging Voltage115.2 V
Max Continuous Discharging Current100 A
Serial ConnectionN/A
Parallel ConnectionUp to 4 in 1 cluster. Multiple clusters are possible in the system
Cell Configuration32S1P
Charging Temperature0°C to 55°C
Discharging Temperature-10°C to 60°C
CommunicationOne CAN for ePropulsion motors / One CAN (Two ports) for parallel
batteries / One CAN for charger
Shipping ClassificationUN3480, Class 9, UN38.3 Certified
ApprovalsCE, UKCA, FCC
Warranty (non-commercial use)2 years

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.

Which electric inboard to choose? How many batteries do I need?

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