3300mAh Ni-MH Irobot Roomba 500 Battery Packs: 1. Model:IROBOT 500 2. Voltage:14.4V 3. Capacity:3300mAh 4. Weight:750g 5. Application:vacuum cleaner 6. Certificate:CE 7. Lead time: in 4 weeks 8. Payment term: T/T,L/C Product Advantages: 1) High capacity and high energy density 2) Low inner resistance 3) Long cycle life, chargeable up to 500 times 4) Low self-discharge 5) IEC standard 6) Fast charge available 7) Provide both single cells and battery packs 8) All products are inspected strictly with the match of capacity 9) Good performance at low temperature, can work at ambient temperature -20 to 55¡ãc 10) Maintenance free, simple operation as dry battery, but can¡¡¥t over-discharge or overcharge 11) Stable performance 12) No memory effect 13) Environmental friendly. Excellent Services: 1. Outstanding quality and high durable performance 2. Have a good sell and competitive price 3. Prompt delivery time and professional service. Packing:12pcs/carton Carton size:375*285*155mm.