Features: 100% Compatible with original manufacturer equipment including chargers No memory effect, you can charge the battery at anytime Battery can be charged more than 500 times With CE, ISO9001 and RoHS certification 14 days money-back guarantee & 12 months warranty Battery Specification: Capacity: 1850mAh Type: Li-ion Voltage: 3.7 Dimension: 51.40 x 50.80 x 6.50mm Compatible Fit Model: TP-Link TL-MR3040, 3G/3.75G Battery Powered Wireless N Router, Portable Mini 150Mbps 3G Mobile Wireless Router, TL-MR11U Compatible Part Number: TP-Link TBL-68A2000