Black, 11.1V, 4400mAh, Li-ion Battery fits Advent, 4211, 4212, 48.84Wh

Battery Fits Models:- 4211, 4212

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Battery Part Numbers:- 14l-ms6837d1, 3715a-ms6837d1, 6317a-rtl8187se, Bty-s12, Tx2-rtl8187se

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Our equivalent battery is made with premium cells and is rated as shown in the specifications on the product page. 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.  If in doubt - check us out! We will select the correct battery for you and guarantee that fitment. A simple phone call or email, or live chat can save you time and money on your selection.  If in doubt - check us out! We will select the correct battery for you and guarantee that fitment. A simple phone call or email, or live chat can save you time and money on your selection.  Ensure that you have verified that you are ordering the correct battery, look at the voltage and battery part numbers, and make sure they match. We can select for you just live chat with us, and we will confirm the product you need. Our warranty period is usually stated here on the product page; Most products come with a 1-year warranty, Some products do have six months. Details of what is included in our contract can be seen on our information pages. 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 its charge left. This will extend the life of the battery. If you are looking for a High-quality replacement battery with ISO 9001 certifications in place, then look no further. This battery is designed to be as robust and safe as the original OEM battery. Cameron Sino manufactures batteries for many OEM companies. The only difference that you will find is the label that is installed.  The products that this replacement battery is designed to replace are shown below. Special Remarks:- None at this timePlease make sure that the device manufacturer, The model number, and the battery part number are all listed in our product details. Some manufacturers have more than one battery type fitted in like models. We recommend that you remove the original battery before ordering to confirm this. If you are not sure, we may verify for you.Our battery may have a different Capacity to your original, either to increase the runtime of the product or due availability of cells. The product will still fit and charge as long as your device and battery number are listed.