# 28-300-BATTERY MODULE
*component . products*

28-300-BATTERY MODULE is a 28 V LFP spacecraft battery module for energy storage and battery management in LEO spacecraft systems.

## Specifications
- **manufacturer**: dragonfly
- **deployment context**: orbital
- **entity type**: component
- **last verified date**: 2026-05-28
- **verified by**: operator
- **claim status**: unclaimed
- **subtype**: power
- **provider**: dragonfly
- **attributes**: {"kind":"component","product_status":null,"manufacturer":"dragonfly","description":"28-300-BATTERY MODULE is a 28 V LFP spacecraft battery module for energy storage and battery management in LEO spacecraft systems.","sensor":null,"bus":null,"ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"orbital"}

## Editorial
28-300-BATTERY MODULE is Dragonfly Aerospace's 28 V LFP lithium-ion spacecraft battery module for modular energy storage and battery management in LEO spacecraft systems.[^dragonfly-battery-page]

Dragonfly presents the module as ITAR-free, TRL 9, and flight-proven.[^dragonfly-battery-page][^dragonfly-components-overview]

The battery uses a 9s4p LFP topology with 297 Wh capacity, 29.7 V nominal voltage, and 32 V end-of-charge voltage.[^dragonfly-battery-page]

Its discharge limits are 20 A, 600 W, or 2C continuously, and 40 A, 1200 W, or 4C for 60 seconds at peak.[^dragonfly-battery-page]

Recommended charging is at or below 12 A or 1.2C, and internal resistance is 50 milliohm.[^dragonfly-battery-page]

The module provides SMBus and direct control lines, operates from -10 C to +40 C, and has a recommended operating temperature of 20 C +/- 10 C.[^dragonfly-battery-page]

Its published lifetime and physical specifications are 5 years in LEO, TID screening above 20 kRad, 4.8 kg +/- 20 g mass, and 350 x 108 x 115 mm dimensions.[^dragonfly-battery-page]

The built-in BMS provides monitoring, balancing, over-voltage and under-voltage protection, SoC monitoring, transport hibernation, per-string fault isolation, and health telemetry.[^dragonfly-battery-page]

## Sources
- [dragonfly-battery-page] | Dragonfly Aerospace 28-300-BATTERY MODULE technical specification page | https://dragonflyaerospace.com/components/battery-module/ | tier=operator-datasheet | accessed=2026-05-28 | author=Dragonfly Aerospace
  Official product page with technical specification table; page labels a brochure download but no separate PDF href was exposed during this pass.
- [dragonfly-components-overview] | Dragonfly Aerospace satellite components overview | https://dragonflyaerospace.com/components/ | tier=operator-marketing | accessed=2026-05-28 | author=Dragonfly Aerospace
  Official components index cross-checking ITAR-free and TRL summary labels.

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Source: https://eo-atlas.org/products/component/28-300-battery-module
Maintainer: SpectraWorks B.V. (CC-BY 4.0)