Reliable, Scalable Battery
Solutions for Space

High-power MA12x platforms deliver exceptional pulse capability and voltage stability for the most demanding smallsat missions — engineered with the same cell technology and processes that have powered 262+ satellites with zero failures.

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720 – 4,320 Wh
Scalable in a single battery
15.8 Grms
Random Vibration Qualified
>25,000 cycles
60% DOD LEO
<6 Months
Manufacturing Lead-time
SMALLSAT POWER

High-power solutions for the
most demanding smallsat missions

COTS batteries often lack the pulse power needed for peak loads. Legacy systems are oversized and heavy. GS Yuasa MA12x platforms deliver exceptional power handling and voltage stability using the LSE12x cell — manufactured using the same processes and facility as GS Yuasa cells trusted on critical programs.

Optimized for high pulse power

Industry-leading low internal resistance delivers stable voltage under extreme loads and eccentric duty cycles.

Power without compromise

High power capability in compact, right-sized form factors — no need to oversize for peak performance.

Accelerate your schedule

Qualification-by-similarity using the same cell designs and processes proven on critical programs.

MA12x PLATFORM

MA12x
Modular Battery
Platform

Configurable high-power platforms from 720Wh to 4,320Wh in a single battery, built on the qualified LSE12x cell — a power-optimized 12 Ah cell. Purpose-engineered for high-pulse and eccentric duty cycles on LEO smallsats and constellations.

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MA12x modular battery configurations

MA12x platform — scalable from 720 Wh to 4,320 Wh in a single volume-efficient package

POWER HANDLING
Optimized for high pulse loads
Exceptional performance under peak demand
VOLTAGE STABILITY
Industry-leading low DCR
Minimal voltage drop under high loads
FAULT TOLERANCE
Fault detection and isolation capability
Mission-critical reliability
QUALIFICATION
Complete
Full electrical & environmental testing
THE DIFFERENTIATOR PROGRAMS ACTUALLY FEEL

Advanced Life & Performance Modeling

We don’t just sell cells. We help you right-size the entire energy storage solution using tools and data built on decades of real flight experience across this exact chemistry and form factor — now extended to the compact LSE12x cell and MA12x platforms for smallsats and constellations.

What our modeling delivers

  • → Accurate end-of-life performance predictions based on your specific high-pulse LEO duty cycle, temperature profile, and DoD requirements
  • → Optimized cell selection and battery architecture — avoiding the mass and cost penalty of conservative worst-case oversizing (e.g. 450 Ah baseline reduced to 192 Ah nameplate for demanding GEO missions)
  • → Realistic margin management using the same methodology applied to 262+ satellites and the longest-running missions
  • → Consistent modeling approach from large GEO cells (LSE190, LSE160) down to LSE12x and MA12x — one data heritage across the entire family

Real mission example approach

We use detailed life and performance models based on predicted load profiles and heritage data from other LSE cell products. These models provide reference trade studies that can inform right-sizing decisions for mass, volume, and end-of-life margin. The modeling approach is validated against on-orbit data for other LSE cell products and should be considered as part of the overall right-sizing process for MA12x platforms. None of the MA12x configurations have flown yet.

Typical outputs we provide:
Capacity fade curves for your exact DoD & temperature
DCR at BOL and mission-life performance projections
Recommended cell type + parallel/series configuration
Margin vs. oversizing comparison with quantified mass savings

See a mission modeling example from the ESPAStar-HP mission in the section below. The model is validated against on-orbit data for other LSE cell products.

MISSION MODELING EXAMPLE

Example: ESPAStar-HP Mission Profile

The model (validated against on-orbit data for other LSE cell products) can be used to predict key metrics for right-sizing:
  • Capacity retention (fade) over mission life for the exact duty cycle
  • End of Discharge Voltage (EoDV) performance
  • Optimized battery configuration with quantified mass and volume savings

Full presentation (including methodology and additional validation cases) available in the Resources hub.

ESPAStar-HP Mission Model graph cropped from original SPW 2024 presentation

ESPAStar-HP 7-year GEO mission profile — GS Yuasa model (validated against on-orbit data for other LSE cell products) provides a reference for right-sizing to a 192 Ah (nameplate) LSE12x battery (16p8s configuration) vs. the spacecraft datasheet's 450 Ah baseline. Source: GS Yuasa SPW 2024.

THE FOUNDATION

LSE12x Cell

Every MA12x is built on the LSE12x: a power-optimized 12 Ah cell with Gen-4 LCO chemistry. Designed for high-pulse power and eccentric duty cycles where energy density alone is not enough.

  • → Extremely low internal resistance for high power delivery
  • → Superior performance under high pulse and peak loads
  • → Fully space-qualified (LEO/MEO/GEO, unregulated bus)
LSE12x Cell Technical Specification Sheet (PDF)
LSE12x Cell
WHY LEADING PROGRAMS CHOOSE GS YUASA

Engineered for reliability
where failure is not an option.

Real MA12x Hardware

Real MA12x hardware during development & qualification

Power-optimized design

Exceptional high-pulse and eccentric duty cycle performance in a compact form factor.

High-power stability

Minimal voltage drop under load for efficient EPS and higher payload power.

Proven fault tolerance

Architectures refined across 262+ satellites with zero cell failures.

Qualification-by-similarity

Leverage identical cell designs and processes from Cygnus and ISS to shorten your campaign.

Constellation economics

Predictable life, consistent performance, and volume manufacturing readiness.

US-based mission support

AS9100-certified integration, testing, and engineering in Georgia (flawless 2025 audit).

PROVEN WHERE IT MATTERS MOST

Flight Heritage That
De-Risks Your Mission

Northrop Grumman Cygnus

LSE cells in GS Yuasa batteries have powered multiple NASA CRS missions to the ISS. NG-20 helped push total flown energy past 5 MWh.

ISS Main Battery Replacement

Supplied reliable lithium-ion systems for NASA’s critical on-orbit upgrade.

262+ satellites • 5+ MWh • Zero cell failures

25+ years. 550+ million cell-hours. Across LEO, GEO, planetary, and human-rated programs. Same chemistry, design, and manufacturing processes used in MA12x today.

NEXT STEP

Ready to right-size your power system?

Speak with a power systems engineer for mission modeling, trade studies, and configuration support.

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Technical content subject to U.S. export controls (ITAR/EAR). Eligible recipients only.
Radiation and thermal performance data available to U.S. persons and eligible entities under NDA.
MA12x Qualification Package (PDF) LSE12x Cell Technical Specification Sheet (PDF) Technical Presentations Library