Is the external battery on www.mydigitaldiscount.com the correct one for ND2700? The website says that it is 4400 mah and 3.7V. If it isn't, where can I get the correct external battery in the USA?
3.7V Li-ion battery can be used.
But the one provided at www.mydigitaldiscount.com is not made by us.
We provide 3.7V 2200mAH for ND2700. May be it's provided by the reseller.