Upgraded Ni-Mh Dc9091 Dw9091 Dw9094 De9091 De9092 De9038 2Packs Firstpower 3.7Ah ?Battery Features?: 14.4V / 3.7Ah / Ni-Mh / Via FCC, ROHS, CE Safe Certified. No Memory Effect, not hot when charge. Tested by manufacturer to match Dewalt OEM product ?Compatible with DEWALT 14V?: Fits all current model DEWALT 14V tools and original charger . E.g: DEWALT DC984, DC9091, DC730KA, DC930KA, DCD920KX, DCD930KX, DW935, DW954, DW941K-2, DW9091, DW9094, DE9091, DE9038, DE9095...Pls use "Ctrl+F?to Compatible model in the Product description. ?3.7Ah Higher Capacity?: Upgraded to 3.7Ah higher capacity battery with higher quality cells for long-lasting performance. 3.7Ah Higher capacity offering long-lasting performance and durability than 3.0Ah. ?Safe Stable?: No Memory Effect, Can be charged or discharged as needed without loss of capacity . Top A grade NI-MH Battery Cells, Built-in protection against potential damage caused by overcharging, overheating and short-circuit protection. ?High Quality XRP Battery?: High-capacity XRP battery has 40 percent more run-time than standard batteries. Easy to use handle ,high quality material durable. 30 days money back, 1 Year Warranty, 24 hours service.