When we mentioned Mugen Power releasing their 3600mAh battery for the Bold 9900/9930 a few readers piped up about another alternative. This one comes from the relatively unknown Onite with a 3200mAh battery for only ~$20 shipped from Amazon by GrayBean. That means Prime members get free shipping and other users could pad the order beyond $25 total for free Amazon shipping. Better yet since it ships from Amazon you should also covered by Amazon’s liberal 30 day return policy.
Papped mentioned that he gets about 2+ days of battery on the Onite 3200mAh battery. If you are willing to give it a shot checkout the Onite 3200mAh battery @Amazon for $20. Otherwise Amazon is also selling the Seidio 3000mAh extended battery for the Bold for $69.95 shipped.