Battery Fit's Models:- 6 Inch Cordless Chainsaw, Leaf Blower 2-in-1 20v, Qm-13809s-t-20, Qm-23802, Qm-3061b, Qm-3602b, Qm-4a6001, Qm-6001, Qm-t20
Battery Part Numbers:- K16811
Although a generic version of the battery, the battery we supply is designed and built to be as robust and as good quality as the original OEM battery. Our batteries from Cameron Sino are built using the highest quality components manufactured by the world's leading factory. This battery will function the same as the OEM battery. Batteries come in all shapes and sizes; quite often, a single battery model will replace hundreds of other models. The manufacturers, in their wisdom, have assigned different part numbers to like batteries. We can usually cross-reference this product to the correct replacement for you. Batteries come in all shapes and sizes; quite often, a single battery model will replace hundreds of other models. The manufacturers, in their wisdom, have assigned different part numbers to like batteries. We can usually cross-reference this product to the correct replacement for you. If both your device's battery and model number are shown in the table below, you should be good to order. The warranty we offer is for 12 months; this covers your product against manufacturing defects. If for any reason, the product fails within this period, we will replace it free of charge once we receive the product back for testing. The average life of a Li-ion battery is around 400 cycles; This is the same for Lithium Polymer. Nimh should last for about 500 cycles. (A cycle is a discharge and recharge.) Please remember that a cycle will still be used, even if only partially discharged, then recharged. It's always best to run the battery low and recharge when it reaches about 10% of it's charge left. This will extend the life of the battery. This replacement High-Quality battery is rated as shown in the table above; all of our replacement batteries are designed specifically to replace the OEM battery in your device. Our batteries are manufactured to a very high standard to enhance the performance of your device. The batteries are designed with high-quality components by our ISO 9001 certified factory. All of the known fitments for this product can be seen in the table below. Special Remarks:- You must check that you are going to order the correct battery. To be certain of fitment, make sure that the battery number, device model, and manufacturer are listed in the description. This is the only guarantee that this is the correct battery. Contact us if you would like us to confirm for you. Do not be alarmed if the Mah (Milliamp Hour) is greater or less than the original. This figure stated is an estimation of the battery's capacity to store charge and will not affect the original equipment or charging.