12V Slim Battery


This 10-cell, 12V 3000mAh battery has a low profile configuration to make it easier to mount on a robot. The Slim Battery pack is wired with an XT30 male connector and an inline 20A replaceable ATM fuse. XT30 to Tamiya Adapter no longer automatically included as of 5/10/2017.


  • Voltage: 12V
  • Capacity: 3000mAh
  • Weight: 567g
  • Maximum Dimensions: 113.5mm x 90.5mm x 23mm
  • Wire Gauge: 16 AWG
  • Connector: XT30
  • Replaceable Fuse: 20A ATM
  • Maximum Discharge Rate: 10C
    • While the battery cells are rated at a 10C (30A) discharge, the in-line fuse limits this to 20A.
  • Wire Length (excluding XT30): 150mm

Best Practices

All rechargeable batteries have a finite lifespan. Factors that affect lifespan include the number of discharge/charge cycles and the average loading of the battery. The following best practices can help maximize the lifespan of your battery:

  • Charge rate
    • Minimum: 1.5A
    • Maximum: 3.0A
    • Recommended: 1.8A or 2.0A
  • Do not overcharge
    • Disconnect the battery from the charger once it indicates a full charge.
    • Typical charge time does not exceed 2 hours.
    • Do not charge a battery that hasn't been discharged significantly.
      • For example, running the robot under minimal load for a few minutes will not significantly discharge the battery.
  • Minimum no-load voltage: 9.0V
    • Discharging the battery past 9.0V can reduce the lifespan of the battery and can permanently damage the cells.
    • Periodic dips below 9.0V when under load is expected and OK.
      • For example, don't forget to unplug your battery after you are finished running the robot and don't run your robot until it completely stops responding!
  • Temperature
    • Let the battery cool before and after charging.
    • The battery may feel warm after heavy loading or after charging. This is normal.

CAD & Drawings