(Better than BH5X) ProdiCell Premium 1800mAH BH6X Slim Extended Battery for Motorola Atrix 4G and Droid X ProdiCell premium batteries are only authorized to be sold by QuickShippers/ProdiCell. It is illegal to use our trademarked product logo without our express permission. ProdiCell is a registered US trademark. Unauthorized sellers will be reported. We pay extra for high quality lithium-ion cells! FREE 3 Month Warranty! If your battery goes dead within 3 months of purchase, we'll replace it for free. Tested to be comparable to the original OEM battery. No extended battery door is required. Battery generally improves after 4-5 charge cycles. Please allow the battery to fully charge and discharge 5 times to enjoy max charge potential