There are some people who message constantly on their phones and really challenge a battery to last a whole day.
For those people a removable battery is just not enough, and they need just what Mugen Power has provided – a massive extended battery that more than doubles the capacity of the 1650 mAh battery in the Nokia Lumia 820.
The battery costs $89.50, which is somewhat pricy, and comes with a replacement back available in Black, Red, Yellow and White.
The Mugen Power 3600mAh Extended Battery for Nokia Lumia 820 with Battery Door [HLI-820XL] can be found on their website here. Delivery is from the 4th May.