Space batteries compared: 40 models

Batteries carry the spacecraft through eclipse. What matters is stored energy against mass, so the table shows the capacity as the manufacturer states it — in ampere-hours or watt-hours — next to the measured mass.

Figures are taken from manufacturer datasheets and product pages, normalised to common units. Every row links to the product page and, where available, to the datasheet itself. As of 2026-10-15.

40
models listed
17
manufacturers
2.075 kg
median mass (0.02–82 kg, 30 values)
Model Manufacturer Mass, kg Voltage, V Max dim., mm Capacity Datasheet
Power supply system (with battery unit) SPUTNIX 0.02 3.5–5.5 — — —
Power Supply System [with battery unit] SPUTNIX 0.058 3–6 96 — —
VES16 Cell Saft 0.112 2.7–4.1 — — —
NEA® 8030 Series Battery Cell Bypass Switch Ensign-Bickford Aerospace & Defense (EBAD) 0.13 — — — —
NEA® 8020 Series Battery Cell Bypass Switch Ensign-Bickford Aerospace & Defense (EBAD) 0.13 — — — —
OPTIMUS Battery AAC Clyde Space 0.268 8.3 — 30 Wh PDF
B14-M45/M90 14V Modular SmallSat Battery ibeos 0.375 13.2–16.8 94.5 — PDF
NanoPower BP8 100 Wh GomSpace 0.486 — 95 — PDF
NanoPower BPX 100 Wh GomSpace 0.5 — 93 — PDF
High Capacity Batteries Blue Canyon Technologies 0.65 — — — PDF
4S1P VES16 Battery Saft 0.7 13.2–16.4 — 4.5 Ah —
B28-135 28V SmallSat Battery ibeos 0.85 22–33.6 94.5 135 Whr PDF
Umbra Battery Module (8S1P/8S2P) Umbra Lab Inc. 0.93 22–31 — — PDF
ABSL CM170 4s6p Li-ion Space Battery (14 V, 12 Ah) EnerSys / ABSL Space Products 1.6 12–16.8 132 12 Ah PDF
ABSL CM230 8s4p Li-ion Space Battery (28 V, 8 Ah) EnerSys / ABSL Space Products 2.05 24–33.6 168 8 Ah PDF
B28-M275/550/825/1100 28V Modular Battery Series ibeos 2.1 24–33.6 — — PDF
B50-412/825/1237 50V Modular Battery Series ibeos 3 36–50.4 — — PDF
BAT-110 Berlin Space Technologies 3 23.1 240 7.5 Ah (customizable) PDF
ABSL CM520 8s9p Li-ion Space Battery (28 V, 18 Ah) EnerSys / ABSL Space Products 4.3 24–33.6 209 18 Ah PDF
28-300 Battery Module Dragonfly Aerospace 4.8 29.7 350 297 Wh PDF
VES16 8S4P Battery Saft 5 25–32.8 — 18 Ah —
Regulation and control equipment SPUTNIX 7 22–34 306 — —
ABSL CM1040 36s4p Li-ion Space Battery (126 V, 8 Ah) EnerSys / ABSL Space Products 8.4 108–151.2 362 8 Ah PDF
ABSL CM1040 8s18p Li-ion Space Battery (28 V, 36 Ah) EnerSys / ABSL Space Products 8.8 24–33.6 362 36 Ah PDF
Rechargeable Battery for Power Supply of Spacecraft and Ground Infrastructure Saturn (Krasnodar) 14.5 23.8 472 20 Ah —
ABSL CM2300 16s20p Li-ion Space Battery (56 V, 40 Ah) EnerSys / ABSL Space Products 19.6 48–67.2 359 40 Ah PDF
ABSL CM2300 8s40p Li-ion Space Battery (28 V, 80 Ah) EnerSys / ABSL Space Products 20 24–33.6 359 80 Ah PDF
VES16 11S16P Battery Saft 28.8 29.7–45.1 — 72 Ah (16 × 4.5 Ah VES16 cells; some lis —
Rechargeable Battery for Power Supply of Spacecraft Saturn (Krasnodar) 74 28.8 530 90 Ah —
High-capacity Rechargeable Battery for Power Supply of Spacecraft and Ground Infrastructure Saturn (Krasnodar) 82 27.6 619 90 Ah —
1U Battery Board CubeSat Aerospace — 3.7 — — —
50V Battery ibeos — 50 — 1 kWhr —
Airbus Space Battery Products Airbus Defence and Space — 30 — — PDF
BAT module Space Inventor ApS — 14.4 — — —
Intelligent Lithium Battery Module (BM2) Pumpkin, Inc. — — 100 — PDF
Intelligent Protected Lithium Battery Module with SoC Reporting (BM2) Pumpkin, Inc. — 5.2–16.8 — — PDF
Nanosatellite Battery Array SPUTNIX — 14.8 — 3200 mAh —
Nanosatellite Power Subsystem Stellar Exploration, Inc. — — — 70 Wh (single module) and 3 kWh (40 modu PDF
Solar Element GaInP2 / GaAs / Ge Saturn (Krasnodar) — 2371 80 — —
SXC-PSS-03 Electrical Power System (with Battery Pack) SPUTNIX — 6–8 — — —

A dash means the figure is not published by the manufacturer. Download the same table as CSV — free to reuse with attribution (CC BY 4.0).

See also: all space batteries in the catalogue · component benchmarks · other comparisons