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Why choose ZEM Marine Lithium Batteries?

1. Safe & Durable LiFePO₄Core

Adopts Lithium Iron Phosphate (LiFePO₄) chemistry: Non-toxic, non-explosive, and thermal runaway-proof, perfect for enclosed marine compartments

5000+ deep cycle life (4x longer than traditional lead-acid marine batteries)

IP67 waterproof & saltwater corrosion-resistant design: Withstands harsh marine environments (humidity, salt spray, vibration)

Stable performance in -20°C to 60°C (-4°F to 140°F): Adapts to tropical and temperate marine climates

2. Powerful Energy & Efficient Performance

Multiple voltage options (12V/24V/36V) to match different marine equipment (trolling motors, navigation systems, pumps)

High energy density: 4.6KWH/5.12KWH standard energy storage options, supporting long-time offshore operations

100% depth of discharge (DOD): Maximize energy utilization without residual waste

Solar-compatible: Works with marine solar panel kits (like 200W/390W systems) for renewable energy storage, reducing reliance on shore power

3. Low Maintenance & User-Friendly

Maintenance-free: No water refilling, no acid leakage, no harmful fumes (safe for indoor boat spaces)

Lightweight design: 60% lighter than lead-acid batteries, reducing boat load and improving maneuverability

Advanced BMS (Battery Management System): Real-time protection against overcharge, over-discharge, short circuit, and overheating

Fast charging: 80% charge in 1.5-2 hours (compatible with standard marine chargers and solar setups)

4. Cost-Effective & Eco-Friendly

5-7 year lifespan (vs. 1-2 years for lead-acid batteries): Lower total cost of ownership

Lead-free, mercury-free, and recyclable: Complies with global marine environmental standards (UN38.3, CE, FCC)

Low self-discharge rate (<3%/month): Holds charge for months during off-season storage


Hot Products

1. 51.2V50Ah EM4850 Lithium battery system for vessels

Our Lithium-ion batteries combine outstanding energy density and with highest level of safety, presenting the highest standards for the ship batteries.

 

Description

ELECTRICAL SPECIFICATIONS

Rated Capacity

50Ah

Rated Voltage

51.2V

Energy

2560Wh

Type of cell

LFP


CHARGE & DISCHARGE SPECIFICATIONS

System charging termination voltage 

57.6V

System discharging termination voltage

41.6V

Maximum sustainable charging current

50A

Maximum sustainable discharge current

80A


TEMPERATURE SPECIFICATIONS

Charging temperature range

0~55℃

Discharging temperature range

- 20 ~55℃

Storage temperature

-20~60℃

 

 

2. 51.2V80Ah EM4880 Lithium battery system for vessels

Our Lithium-ion batteries combine outstanding energy density and with highest level of safety, presenting the highest standards for the ship batteries.

 

Description

ELECTRICAL SPECIFICATIONS

Rated Capacity

80Ah

Rated Voltage

51.2V

Energy

4096Wh

Type of cell

LFP



CHARGE & DISCHARGE SPECIFICATIONS

System charging termination voltage

57.6V

System discharging termination voltage

41.6V

Maximum sustainable charging current 

80A

Maximum sustainable discharge current

100A



TEMPERATURE SPECIFICATIONS

Charging temperature range

0~55℃

Discharging temperature range

- 20 ~55℃

Storage temperature

-20~60℃

 

3. 51.2V 100Ah EM48100 Lithium battery system for vessels

Our Lithium-ion batteries combine outstanding energy density and with highest level of safety, presenting the highest standards for the ship batteries.

 

Description

ELECTRICAL SPECIFICATIONS

 

Rated Capacity

100Ah

Rated Voltage

51.2V

Energy

5120Wh

Type of cell

LFP

          

CHARGE & DISCHARGE SPECIFICATIONS

 

System charging termination voltage

57.6V

System discharging termination voltage

41.6V

Maximum sustainable charging current 

100A

Maximum sustainable discharge current

150A



TEMPERATURE SPECIFICATIONS

Charging temperature range

0~55℃

Discharging temperature range

- 20 ~55℃

Storage temperature

-20~60℃


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