Frontgrade Battery Electronics provide autonomous, dissipative, and continuous cell balancing to maximize available battery capacity, and therefore battery cycle life, throughout a mission.

With their outstanding energy density, Lithium-Ion batteries are the preferred technology for many applications. It is extremely important to maintain the cell voltage between its design limits, or the cell will be irreparably damaged. This is where Frontgrade BEUs can help. We provide continuous balancing, monitoring, and telemetry for 8-, 12- or 24-cell batteries. Frontgrade also offers interface assembly solutions for your designs.


Battery Electronic Units (BEUs)

With Frontgrade BEUs, individual cell voltage is monitored to keep track of cells that may exceed charge limits. Precise voltage telemetry is provided for all cells as well as total battery voltage. Frontgrade also provides units that deliver independent balancing for two batteries or redundant balancing for one. Optional features include reconditioning load control and cell bypass device drivers.

  • Cell voltage monitoring and telemetry
  • Cell balancing to within +/-5.0mV
  • Cell voltage monitoring accuracy +/-10mV
  • Total battery voltage monitoring accuracy +/-0.3% of full scale
  • MIL-STD-1553B telemetry for data logging and monitoring
  • Discrete output lines for critical signaling with user definable thresholds (typical):
    • Over-voltage protection - 4.40V
    • Cell voltage high - 4.20V
    • Cell voltage low - 3.20V
Battery Electronic Unit

Battery Electronic Units

Part Number Cells Size
BEU8635-08 8 11.50" L x 2.30" W x 5.25" H
BEU8635-12 12 11.50" L x 2.30" W x 5.25" H
BEU8635-24 24 11.50" L x 2.30" W x 5.25" H
BEU8636-08 8 11.50" L x 3.30" W x 5.25" H
BEU8636-12 12 11.50" L x 3.30" W x 5.25" H
BEU8636-24 24 11.50" L x 3.30" W x 5.25" H
BEU8637-08 8 11.50" L x 4.00" W x 5.25" H
BEU8637-12 12 11.50" L x 4.00" W x 5.25" H
BEU8638-08 8 11.50" L x 5.20" W x 5.25" H
BEU8638-12 12 11.50" L x 5.20" W x 5.25" H
BEU8640-24 24 11.50" L x 5.30" W x 5.25" H
BEU8642-EVAL 8 12.00" L x 9.00" W x 2.65" H
BEU8642-EVAL1 8 12.00" L x 9.00" W x 2.65" H
Interface Assembly

Battery Interface Assembly

Part Number Cells Size
BIE8678 8 – 32 6.95" W x 11.71" L x 4.50" H
Support & Contact
Looking for something specific?
Experts are available to assist with your design.
High Reliability Power Products

Do you need help with an existing product?

Our customer and technical support teams are happy to assist.

Astronaut floating above Earth
Are you ready to order?
Our team is happy to assist.
Let us answer any questions you may have.