12V 300Ah Deep Cycle + Starting Battery

Perfect for: Trolling Motors, Stabilizers, Bow Thrusters, Starting Motors, House Batteries, Solar Systems/Off-Grid and other outdoor activities

Replaces your Lead Acid or Traditional Lithium Batteries: 15% higher energy & 50% lighter than lithium & 300% lighter than Lead Acid.

Highest Energy Density: 100 Wh/lbs., 10X more than similar Lead Acid batteries and almost 2X more than lithium.

Low-Temperature Cut-Off Protection: cuts charging and loads when below -20°C/-4°F, extending battery life

Grade-A cells only, 3000+ cycles at 100% DOD

20+ BMS Protections: protects against low temperature, high temperature, short circuit, overvoltage, overcurrent, and undervoltage + more.

Auto Overload Protection & Recovery-No User Intervention Required

IP 67 Rating: moisture, dust, water, and salt spray resistance for reliability in humid environments.

ABYC Official Certification:  All SSM marine batteries meet ABYC standards, ensuring the highest safety for your boating or sailing needs.

Battery

Cell Type: Solid State Lithium

Rated Capacity：300Ah

Nominal Voltage：14.4 V

Energy：4325 Wh

Weight Approx：43 lbs

Size：L13.37" x W7.28" x H9.88" inch (Group 31 size)

Housing Material: ABS (Flame Retardant Plastic)

Protection Class：IP67

Terminals：M8 bolts

Max. Expansion: Up to 4 Batteries Parallel, 2 in Series

Warranty：8 Years Manufacturers Defects, 5 year FREE replacement

Cycle Life：3000 cycles at 100% DOD (Depth of Discharge)

Internal Resistance：≤40mΩ

Certifications UL 1642, UN38.3

ABYC Official Cert: Yes

BMS

Output Power：4325 Wh

Peak Discharge Current：350A

Max. Continuous Discharge Current：250 A

CCA equivalent：1000

CHARGE

Charge Method: CC/CV

Charge Voltage：16.8V±0.6V

Recommend Charge Current: Up to 150A (0.5C)

TEMPERATURE

Charge Temperature：-4℉ to 155℉ / -20℃ to 70℃

Discharge Temperature：-4℉ to 155℉ / -20℃ to 70℃

Storage Temperature：-4℉ to 113℉ / -20℃ to 40℃

Low-Temperature Protection：Yes (-4℉/-20℃)

Low-Temperature Charging Protection Auto Recovery：Yes (32℉/0℃)