Another great product from ZeroLemon for us to review today.

The ZeroLemon extended battery kit for the Samsung Galaxy Note 2 N7100 that is branded as the World’s Highest Battery @ 9300 mAh Capacity for this smartphone


“Home to the World’s Highest Capacity Smartphone Batteries”

Their mission is to provide ultimate smartphone reliability with the world’s highest capacity smartphone batteries battery packs.

when reviewed: 44.99 $ – via

[180 days warranty] ZeroLemon Samsung Galaxy Note II 9300mAh Extended Battery + Free Black Extended TPU Full Edge Protection Case with 180 days Zero Lemon Guarantee Warranty (Compatible with Samsung Galaxy Note II GT-N7100, T-Mobile Galaxy Note II SGH-T889, Sprint Galaxy Note 2 SPH-L900, At&t Samsung Galaxy Note II SGH-i317, and Verizon SCH-i605) With 180 Days ZeroLemon Guarantee Warranty – WORLD’S HIGHEST NOTE 2 BATTERY CAPACITY **USA PATENT PENDING DESIGN**- Black




When life gives you lemons … you put them to be charged for 12 hours. 🙂

– The world’s highest capacity Galaxy Note II Battery @ 9300mAh. More than 3 times the original capacity & slimmer than other manufacturer’s extended battery
– Compatible with all Galaxy Note II Model. Largest Capacity Battery in the World Guarantee
– Patent Pending Design in the USA
– Piano Black Color Full Edge Wrap TPU Case-in-One Construction built to endure hard drops & heavy shocks. No more brittle Back Covers that offers no protection to your phone
– 180 days Zero Lemon Guarantee Warranty with Amazon 30 days Full Refund Guarantee; Longest warranty period in market; 24 hours / 6 days a week support; 100% Zero Defect Guarantee
– Case Dimension: 4.37 * 2.83 * 0.51 inch

Packaging and content

It comes it their thick and durable zip lock resealable plastic bag.
Also present are the details and specs on the back.


Inside we have:
– The 9300 mAh battery
– Various booklets and guides
– The Black TPU Full Edge Protection Case


Some size references with our famous ball point pen.



And then with the test subject, the Note 2.


Here we see how they did to triple the capacity vs the OEM Samsung battery, the hunchback of battery land.
The jokes aside, that is very good, because more battery capacity equals more psychical size increase, pretty logical but there are so many low quality and fakes ones on sale that it is easy to be fooled.

So this is the proper way how it’s done, shown by ZeroLemon.




So it is pretty obvious how it replaces the OEM one.



Then the supplied case.


It serves a purpose of both battery cover and some basic protection.
Unfortunately, NFC is not included.

The case itself is made out of typical semi-rigid material and has a very nice fitment with a phone, although you do get some pulling around sides typical for TPU material.

The finish of TPU case is matte with a nice non-slip ‘grippy’ texture that feels good in your hand and will provide some friction on the surface.

Very important since due to increased size and weight you would want to have a better grip. It also offers edge/lip for a screen protection when placed down.



Let’s proceed with the installation.

Fit snugly and very tight so no worries that will came off although the history of this release is that battery was available some time ago but initial batch of TPU cases was loose, so the decision was made to delay the release in order to fix the problem and to deliver 100% finished product.

So, yes we can confirm they did and no problems.



Ok, so these are the new total numbers of the phone with everything on.

The original Samsung OEM 3100 mAh battery is 75 mm x 56 mm x 5.6 mm (2.95″ x 2.18″ x 0.22″) and weight of 54g (1.9oz).
The new 9300 mAh is 110.8 mm x 71.6 mm x 6.2 mm (thinner side) / 12.9 mm (stacked up side) -> 4.36″ x 2.82″ x 0.24″ (thin) / 0.5″ (thicker side).

The weight of ZL9300 is 166g (5.9oz) and together with TPU case the Note 2 will have 330g (11.7oz) and thickness of 18.76mm.
In comparison, a naked Note 2 is 164g and thickness of 10.68mm.

It obviously makes phone heavier and beefier in your hand but personally i can hold it better in my hand.


Quality is excellent and as you can see everything is aligned right and no interference what so ever.




First boot and it has under 60 % battery left.


This step is important, need to leave it to charge for 12 hours, even if the phone notifies you after a few hours that it is charged, still leave it plugged in for an extra 4-5 hours at least.


And so you can see that it is accepting juice.





How we tested:

– Initial mandatory 12 hours charging time
– Basically tested it as my day to day phone in the same conditions as i did until now and these are:
– 15 minutes of calling / some texting / internet connection for 16 hours a day in which half is via wi-fi and the rest via my operator’s network (Giff-Gaff / O2 – 3G+/H+ connection) so a lot of browsing and finally 2-3 hours of movies/Tv shows.
– After the first discharging cycle (up until under 10 % battery left) let it charged and repeat for 3-4 time until optimal battery levels are reached.


The results


This is after the first cycle.


So first charge and pretty amazing results !
Compared to my original OEM which lasted me only 12 hours a day with only 3-4 hours of screen time, the numbers speak from themselves.

And then this is after 4 cycles, left it to drain at the same 14% level (when the Android warns you that the battery is low)


Absolutely amazing !
And got almost 4 days, i forgot that much times has pasted, because i was used to charge it at least 2 times a day.
So yes, a clear win here.




The good:

+ Superb autonomy
+ Excellent quality for the case and the battery cells
+ Highly welcomed the extra protection given by the case
+ The perfect solution for a long trip and or who needs the extra battery life.
+ Feels good in the hand

The bad:

– Maybe to big for most people but this is subjective
– Heavy no matter what
– You loose the NFC feature
– Longer charging times and cycles until it reaches maximum potential


Many thanks to ZeroLemon for supplying us with this sample !


This extended battery kit from ZeroLemon for the Samsung Note 2, it performed extremely well and thus it gets our:

Globetrotters Award – 4.5 out of 5


Join the discussion 10 Comments

  • Derrick Rains says:

    Hi .
    i am very keen to own a zerolemon-9300 mah extended battery kit for my note 2.
    my preference is black. Are you able to send me a kit to my address in New Zealand.
    I will need to know the freight involved. Payment can be made by PayPal or credit card.
    Kind Regards.
    Derrick. DJ Rains.
    7 Marram Way.RD1 Pekapeka.
    Waikanae 5391
    Wellington. New Zealand.

  • Kamlesh jain says:

    Hi, I purchased a zero lemon 9300mah battery for my note 2 it works but not as I expected.
    And the case is braking automatically after 1 year I want to purchase new case for my battery.
    Were do I get the case for 9300mah zero lemon battery please inform me.

  • FADZRUL says:

    hi im from malaysia.. i looking for zerolemon samsung note 2.. still have this kit? i really want to buy.. in malaysia,stock already not produce.. can i buy it? can show me where to buy? please help to email me if available.. thank you so much

  • Michael Brown says:

    Bought a 9300 mAh battery for my note 2 from zero lemon. Both have swelled up and failed. How do I get a (or both of them) replaced? I’m out a bit of money and like the battery not the failure!

  • Michael Brown says:

    Bought a 9300 mAh battery for my note 2 from zero lemon. Both have swelled up and failed. How do I get a (or both of them) replaced? I’m out a bit of money and like the battery not the failure! How do I replace them?

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