Canon Ixus Battery Nb-4l
Replacement Battery for Canon IXUS 70, what do you suggest?

Canon IXUS 70 camera comes with standard lithium ion battery Canon rechargeable type-4L NB. I want to buy one more, so you can always have a spare charged battery when the current needs recharging. Do you suggest buying the same as that which comes with the camera or is there a better alternative (preferably with more capacity)?

Note the "impact" brand, as sold by B & H Photo. I have one to replace them, but do not know about their suppliers in Europe. It has capacity of 900 mAh battery instead of 760 mAh of the population. I can not say if it lasts longer or not. I can not keep track of how much the use or not use the flash, so it would not be fair to compare. Should last longer in identical conditions, however. I receive a warning appears that some frames more than the battery is low before the camera goes dead on me. In other words, Canon battery can only shoot once I can have more than 5-6 photos in the battery icon and battery Impacy, maybe I can shoot 15 to 20 more. It does not hurt that costs half the battery Canon, either.