Up to 3A~4A output

See the rating means this cable is very good and future proof.

Based on gsmarena

greenshot

So your charger is 1.5a

My 2 cents being a new user of 1020.

Here's my opinion on 1020 after using my wife's pureview 808 and now, 1020.

1. Pureview 808 is, no doubtedly, a better media phone player, ie. it has a louder speaker, clearer earphone audio quality.  Not to mention better audio recording capacity on the 808, even though both sport the similar Rich Recording label.  I don't know much about earlier Nokia music player handphone, but 808 is a better independent media player.  1020 is quite bad in this regards.

2. Photo taking ?  No doubt, with the latest software gadgets and apps, 1020 is much better in terms of taking classic point and shoots, and some special effects offered by the multi-frames specs. I actually enjoy tremendously on those effects.  With the timelapse Pro, even manage to come out with decent timelapse which I truly love to do, and very easily so as well.  That apps has its flaw though, at times unstable.  Hopefully the producer can one day improve the drawbacks.

2. Pureview 808 has the built-in preset specs for photo taking, which I missed in 1020.  For those who want to take instant b&w, or higher ISO setting for its grain in certain location, 808's preset settings are much more convenient.  I hope the windows 8.1 upgrade today can shed some light to reinstate this features in 1020.

3. Battery life.  Need we say more ?  But really, 808 has suffered through abuse by my children, with frequent video viewings etc.  Its battery life is just nothing short of being legendary.  Ok, maybe not that, but really, it is very different when one shot 41MPix photos frequently on location with 1020, its battery life is very much a nuisance for such a high spec camera.  I hope 1020 do come with changeable battery like 808 does. 

4. However, lots of 808 users, or potential users have complaint about the Symbian dead ecology.  With windows phone ecology, I think it has addressed most of the users' concern.  At least it certainly does for me.  In fact, some of the Nokia Apps are just amazing to say the least.  While Windows system is not as responsive, and generally require more clicks to achieve similar effect as compared to IOS system, it is a sacrifice worth making to carry such an impressive camera phone around.  There is no way Symbian can compete in this arena no matter what it did.

In conclusion, 1020 is ideal for frequent photo taker who incidentally need to carry a smart phone. 808 is more suitable for photographer who is purist at heart, and enjoy fast preset mode for quick change in the course of the day.  1020 accompanied phone handle is very handy indeed, and in fact, frequent photographer can buy a few of this as a backup charger for its phone too.  Tripod holder is just a God sent, literally solve the problem of the pureview 808 which lacks such holder. 

I just hope that the battery life can be improved much more. 

I enclose the following self made timelapse video made with Timelapse-Pro with a small tripod plastered onto my car's dash throughout the journey up north.  The video was set at -0.66 exposure, the rest are auto.