Intelligent Lithium Battery Module (BM2)
Pumpkin, Inc.
Space-grade 8-cell Li-Ion battery module with coulomb-counting SoC, cell balancing, configurable voltage (2S4P/3S2P/4S2P), and 15A max output — up to 100Wh.
Technical specifications
- Cell Type
- 8× 18650-size Li-Ion
- Configuration Options
- 2S4P (8.4V), 3S2P (12.6V), 4S2P (16.8V)
- Capacity Options
- 72 Wh / 86 Wh / 100 Wh
- Max Continuous Output
- 15 A
- Peak Output Power
- 160 W
- Min Charge Current
- 5 A CC
- Footprint
- 100 × 100 mm
- Intelligence
- SupMCU, coulomb-counting SoC, cell balancing
- Heater
- Programmable
- Interface
- SCPI over I2C
- Protection
- OV, UV, OC, OT with auto fault clearing
About
The Pumpkin BM2 is an intelligent, protected lithium battery module for CubeSat and small satellite power systems. It houses 8 × 18650-size Li-Ion cells in three configurable configurations: 2S4P (5.2–8.4V), 3S2P (7.8–12.6V, 6 cells), or 4S2P (10.4–16.8V), with capacity options of 72Wh, 86Wh, or 100Wh depending on cell grade.
A SupMCU co-processor provides coulomb-counting state-of-charge (SoC) reporting, automatic cell balancing, and a programmable heater. Protection circuits cover overvoltage (OV), undervoltage (UV), overcurrent (OC), and overtemperature (OT) with automatic fault clearing. Maximum continuous output is 15A (160W peak). The module footprint is 100×100mm and interfaces via SCPI over I2C to the host CubeSat bus.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.
