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sunhux

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Comparison of external battery packs for laptops (esp Macbook Pro)

I'm evaluating a few battery packs to use for Macbook Pro & my
Thinkpads:


a) Tekkeon 3450

b) Energizer XP18000 .  Refer to
    http://www.amazon.com/Energizer-XP18000-Universal-External-Netbooks/dp/B002K8M9HC/ref=sr_1_1?ie=UTF8&qid=1358602353&sr=8-1&keywords=XP18000

c) Incredischarge .  Refer to
   http://www.amazon.com/Incredicharge-I-18000-Universal-External-Netbooks/dp/B006ZB051W/ref=sr_1_5?ie=UTF8&qid=1358601268&sr=8-5&keywords=XP18000

d) Tursion . REfer to
   http://www.amazon.com/Capacity-33600mAh-Portable-External-Notebooks/dp/B0063KXZQ2/ref=sr_1_4?ie=UTF8&qid=1358602353&sr=8-4&keywords=XP18000

Q1:
Read in amazon that Energizer's XP18000 won't charge a Macbook even
when it's connected to AC power (so I guess the AC power is charging
the XP18000 while the XP18000 is charging the laptop ? )

Q2:
Which one of the 4 has the surest-to-work supportability/ compatibility
in charging a Macbook Pro (esp the 13.3" Retina model) ?

Q3:
Which of the 4 has the longest battery life & providing longest charging
hours to a laptop?

Q4:
Macbook Pro's battery can't be removed/replaced by consumer right?
Has to be done by Apple?

I don't live in USA, so if the item is damaged/need to be sent for warranty,
it's going to be very troublesome.  Live in a formerUK commonwealth country
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sunhux

ASKER

So in answering Q1, need to assess if the other 3 batteries
would charge the laptop when the battery is connected to
AC.

I live in a country using 220-240V (13A UK power point), so need to be certain
I can charge the batteries in my country
ASKER CERTIFIED SOLUTION
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☠ MASQ ☠

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ASKER

>There isn't a cable licensed by Apple to both charge and use but they are
> pretty easy to make.  See this description and the links from it.
I'm not good at doing such DIY;  is there an online store that sells this?


for a Macbook Pro to be used on average 5 hrs per day, can the battery
last for 1 year before it's due for replacement?

Does Applecare/warranty covers the battery?