FEATURES: Pre-assembled NiMH Sub-C size cells for use with 1/10 scale R/C vehicles. Also great for electric airplane. Offers 50% longer run times verses 2000mAh packs. Great for endurance racing. Higher average voltage means more power verses NiCd packs. Ni-MH cells have no discharge memory so there is no need to deep discharge them by shorting out the cells. This will hurt the cells. No need to be recycled, NiMH cells are environment friendly. INCLUDES: One Assembled 6 cell, 3000mAh NiMH Battery Pack w/Tamiya Connector REQUIRES: Charger: Having Negative DeltaV or Zero DeltaV Peaking capabilities Discharger: Having capabilities to properly discharge batteries SPECS: Charge Rate: 3-4 amps with a delta peak detection set at 10-20 millivolts (.01 to .02 volts) Height: 0.96" (24.5mm) Width: 1.8" (47.1mm) Length: 5.4" (136.3mm) Weight: 11.2oz (317g) Maximum Cycles Per Day: Three, with a 1 to 2 hour rest period between cycles Dead Shorting: Not Recommended COMMENTS: Do Not dead short the cells after discharging or store them with a resistor across the pack. They do not need this and it will hurt the battery pack. Store cells with voltage in them. Use a digital voltmeter if your charger does not have one, to monitor the voltage. As soon as the voltage stops rising, the pack is charged. Do not let voltage drop like you would with NiCd cells. Charger MUST be able to adjust the negative peak charge rate. Heat or Overcharging Will Deteriorate or Damage NiMH Cells.