This is a Pre-Assembled 6 cell, 3000mAh Nickel Metal Hydride Battery Pack. NIMH Batteries Have A Different Chemistry Than NiCd Batteries So They Require Different Charging Methods (See COMMENTS). FEATURES: Pre-assembled NiMH Sub-C size cells for use with 1/10 scale R/C vehicles, also great for electric airplanes Venom Universal Four Plug System allows connectivity between today"s four most common battery plugs, Tamiya, Traxxas, Deans and EC3, simply attach desired plug to Venom plug on battery"s wire leads Offers 50% longer run times verses 2000mAh packs. Great for endurance racing. Higher average voltage means more power verses NiCd packs. NiMH cells have no discharge memory so there is no need to deep discharge them by shorting out the cells. This damages the cells. No need to be recycled, NiMH cells are environmentally friendly. INCLUDES: One Assembled 6 cell, 3000mAh NiMH Battery Pack w/Tamiya, Traxxas Dean"s and EC3 Plugs REQUIRES: Charger: Having Negative DeltaV or Zero DeltaV Peaking capabilities Discharger: Having capabilities to properly discharge batteries SPECS: Charge Rate: 3-4A with a delta peak detection set at 10-20 millivolts (.01 to .02V) 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 damages the battery pack. Store cells with voltage in them. Do not trickle charge 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. EEW 9/15/04 ir/jxs updt jxs 04/21/10