14.4V, 2000mAh, Li-ion Battery fits Einhell, 4 Li/2, 4/3 Li, 28.8WhBattery Fits Models: 4 Li 2, 4 3 Li, Bt cd 14, Mt as 14 Battery Part Numbers: 4511319, 451132601001, 4511378, 4511773, 451317501014 The products we supply are exceptionally well designed; they use only the best quality parts and are built with safety as a priority. They are designed to be as durable as the original version of this product. The battery shown will replace your original and provide you with an economical alternative to expensive OEM