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9.9V 3000mAh 3S LiFe ECU Battery: Universal Receiver, EC3
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Key Features

  • 9.9V nominal voltage is specific to modern turbine engine ECU requirements without risking over-voltage, or the inconvenience of a failed start from a low 2S Li-Po pack
  • High discharge capability (continuous 60A) makes the pack suitable for the high current draw of the turbine start sequence
  • Long lifespan Li-Fe battery chemistry provides excellent working lifespan
  • Convenient size is easy to place in a model and will provide up to 6 starts of todays modern turbine engines


Spektrum's 3000mAh 3S ECU battery is a high-quality 9.9V Li-Fe battery designed specifically for turbine Electronic Control Unit (ECU) use. Today's turbine engines require reliable ECU power to ensure optimum performance from startup to shutdown.

Application: Turbine Engine Electronic Control Unit (ECU)
Battery Balance Connector: JST_XH
Battery Type: LiFe
Battery Voltage: 9.9V
Capacity: 3000mAh
Cell Configuration: 3S1P
Connector Type: EC3,Universal
Discharge Lead Length: 5.91 in (150mm)
Hard Case: No
Height: 1.73 in (44mm)
Length: 2.91 in (74mm)
Maximum Charge Current: 3A
Maximum Charge Rate: 1C
Maximum Continuous Discharge Current: 60A
Maximum Continuous Discharge Rate: 20C
Minimum Discharge Voltage: 9.6V (3.2V per cell)
Normal/Standard Charge Current: 3A
Normal/Standard Charge Rate: 1C
Watt Hours: 29.7Wh
Weight: 9.6 oz (270g)
Width: 1.81 in (46mm)

Battery Safety Sheet


Will my JR receiver battery work with other systems?

Yes, JR receiver batteries have a universal type connector and is compatible with most current radio systems.

Can a battery be used after it was charged with polarity reversed?

This depends on the age and condition of the battery, performance may be lessened. Contact JR's Service Center if you're unable to determine the condition of your battery.

Does a JR receiver with a Futaba transmitter?

No. they are not compatible with one another.

Product Support Tips

Product Support

Technical questions about this Spektrum product should be directed to Horizon Hobby's Product Support Department:

Horizon Hobby, LLC.
ATTN: Product Support

2904 Research Road
Champaign, IL 61822

To Contact Product Support please email us at

Sales Support

If you would like to purchase this product, please go to the Store Locator or contact the Horizon Hobby Consumer Sales Department:

Horizon Hobby, LLC.
ATTN: Consumer Sales

2904 Research Road
Champaign, IL 61822