[Battery Compatible] Fit Model:Fluke DTX-1200-M, DTX-1200-MS, DTX-1800-M, DTX-1800-MS Equipment, Survey, Test. All batteries are Certificated with ISO9001, RoHS, and CE. [Battery High Quality] - Our batteries are made to the exact specifications as same as the original battery. Every battery is with strict spec detection and use testing, absolutely ensure the safe and durable use of the battery Overcharge, over discharge, Replacement, over voltage and short circuit protection for better battery life. The package has shock-shock foam, transport a protection battery. [Equipment, Survey, Test Battery Specifications]-Capacity 5200mAh / 38.48Wh,Voltage:7.4,Dimensions:98.90 x 98.00 x 26.20mm,Weight:265.4g, - New fully decoded chip works just like the original [New Equipment, Survey, Test battery ]There are many installation videos available on the Internet, which are very easy to install