Worx Wa3512, Wa3511, Wa3512.1, Wa3523, Wg151, Wg151E, Wu287, Wu381, And Wx163 Product Details Battery Type: Li-ion, Voltage:18V, Capacity: 2500mAh Replace Worx Battery WA3511, Perfectly Compatible with WORX WA3512.1 WA3523 WG151 WG151E WU287 WU381 WX163. Works with WA3732, WA3742, WA3835, WA3847 charger, or other WORX 18V/20V Slide-in Style Lithium chargers. High capacity, Share batteries and Save money with the WORX 18V Replacement Battery. More efficiency and no memory effect. Easy to install and remove. 100% QC of this battery and 30 days 100% money back and 1 year warranty.Super friendly customer service Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.