Sound quality is assured as the products are manufactured to a very high standard. Our brand-new battery is an equivalent battery to the manufacturers as stated below. It is made with premium lithium-ion cells and rated as shown in the specifications. If you have the battery model number, this is usually the best way to identify the correct replacement battery for your device. Some batteries can easily be placed from just the model of the device some are much harder to pin down. If you have the battery model number, this is usually the best way to identify the correct replacement battery for your device. Some batteries can easily be placed from just the model of the device some are much harder to pin down. The tables below show all the models that this battery will fit. Check that both the model of your device and the battery number match your original battery. Battery life is dictated by several factors, including temperature, charging frequency, and type of charger. As a rule of thumb Nimh cells can be charged around 500 times, Lithium-Ion around 400 times, and Lithium-polymer Around 400 times. This can increase or decrease depending on the use of the battery. Our ISO 9001-certified battery uses high-quality components, and each cell’s rating can be seen in the table above. Check that your product is shown below in the products table. Some models have more than one battery type available, and the only way you can confirm the correct battery is to remove the original. If the battery’s capacity differs from your original’s, this does not mean ours does not match. It means that our replacement battery will store slightly less or more charge than the original.