more power = more weight / otherwise at first glance and test well

I have ordered this battery for our HP Compaq Mini CQ10-500 as a replacement for the now defective original battery. Because not so good experiences with replacement batteries for my HP Pavilion DV8-1030EG I started immediately after the delivery, the HP Battery Check program. With a surprisingly positive result for me. The supplied battery Erenbach was the delivery date is 100 days old, still loaded to 50% and has shown by the HP software, the full 4400 of 4400mAh possible capacity (100%). The original battery enclosed in the same package size 2500mAh. However, the original battery weighs only 180g. The 4400mAh bring 310g on the scales. The netbook is the 4400mAh battery 130g heavier. Size and housing quality correspond to the original battery (no concessions). The HP software displays guarantee for the new battery 1 full year. Many others give only 6 months. The replacement battery was indeed sold by Erenbach; However, standing on the package as a producer, an address in Hong Kong.
Due to the current experience, I would buy from Erenbach offered batteries.