THE NEW SIGMA: built to fit, built to grow

230Ah that fits the underseat bay precisely. Add a unit when you need more.

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Super B

Complete control. Seamless integration.

The new Sigma

Underseat space is fixed. The Sigma is built around it.

Underseat space in a motorhome is fixed. The Sigma is built around it: 230Ah in a battery that fits the bay precisely, with room left over for your inverter.

When you need more, you add a unit alongside it. Up to four in parallel, without changing the installation.

Designed around the space you actually have

Most batteries ask you to work around them. The Sigma starts from the bay and builds outward, so the rest of your system still fits.


Purpose-built to fit

Designed around the underseat bay dimensions found in motorhomes. It fits where other batteries don't, and leaves space for the rest of your system.

Scales with your setup

Run one unit or four in parallel, up to 920Ah in the same footprint. The system grows with you, without any change to the installation.

Terminals on the side

Side-mounted terminals make connections easy to reach and easy to work with, even in a tight underseat bay.

Sigma 230Ah 200A Sigma 460Ah 200A Sigma 460Ah 350A
Energy 2,944 Wh 5,888 Wh 5,888 Wh
Nominal capacity 230Ah 460Ah 460Ah
Max charge current 200A 200A 350A
Weight approx. 22 kg approx. 40 kg approx. 40 kg
Dimensions 353 x 184 x 188 mm 353 x 360 x 188 mm 353 x 360 x 188 mm

Sigma 230Ah 200A

Energy
2,944 Wh
Nominal capacity
230Ah
Max charge current
200A
Weight
approx. 22 kg
Dimensions
353 x 184 x 188 mm

Sigma 460Ah 200A

Energy
5,888 Wh
Nominal capacity
460Ah
Max charge current
200A
Weight
approx. 40 kg
Dimensions
353 x 360 x 188 mm

Sigma 460Ah 350A

Energy
5,888 Wh
Nominal capacity
460Ah
Max charge current
350A
Weight
approx. 40 kg
Dimensions
353 x 360 x 188 mm

All models: 12.8V nominal · LiFePO4 · integrated protective BMS with smart heating · Bluetooth · 4,000+ cycle life · operating range -30°C to +65°C · UN ECE R10, FCC Class B, ICES-003, EMC, RED, UN 38.3, UN3480 Class 9 certified

Reliable power for your aquatic journey

Whether you sail, navigate, race, or fish for fun or professionally, having reliable power is essential. Super B lithium batteries provide long-lasting, dependable energy for all types of vessels. With lithium iron phosphate technology (LiFePO4), you can navigate independently, free from noise, vibrations, or exhaust fumes.

Optimal comfort and safety

Leisure boats and yachts prioritize comfort and safety. Super B lithium batteries enhance your onboard experience by providing silent, reliable power. Enjoy beautiful harbors and spots with no noise, vibrations, or exhaust fumes, ensuring a stress-free aquatic journey.

Lithium advantages for leisure marine

Super B lithium batteries are engineered for durability and safety. They charge quickly, discharge slowly, and hold their charge longer than lead-acid batteries. With a higher energy density, they require less space and weight—perfect for leisure marine applications.

Fast Charging for Longer Adventures

Spend less time charging and more time on the water. Super B lithium batteries can fully recharge within one hour, giving you the freedom to extend your journey without compromise.

Low Self-Discharge for Peace of Mind

Store your boat over long periods without worry. With a 10x lower self-discharge rate than lead-acid batteries, Super B lithium batteries are ready to power your next adventure whenever you are.

Room to build

Sigma was designed around the space you actually have. That changes what's possible.

The inverter and the charger go where you want them. The terminals sit where you can actually reach them. And when you add solar, or a second fridge, or just want more days off-grid, you add a unit instead of rebuilding the installation.

For campers and marine applications

The Simarine Pico Super B Edition is an ideal choice for both on-road and water adventures.

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