Intex IT-PB11K 11000mAH Power Bank (White)

---] Intex IT-PB 11K is a 11000 mAH Power Bank which costs Rs.929. You MUST be reading the reviews here to know that whether this product is USEFUL, best-in-class and most importantly, WORTHY for your hard earned money or not.---]I really THANK YOU for being a SMART BUYER who is first researching about a product and then thinking of whether to buy it or not! __________________________________________________________________________________________________________________---] One important thing I want you to know is that this power bank DOES NOT have a USB Type-C Port. This will not affect you now but will surely affect you in the future as most of the devices in the future will come with USB Type-C port. But, every problem has a solution. You can easily purchase a micro USB to USB Type-C connector which will cost you around 100-150 rupees.---] You might be thinking that with 11000 mAH battery, you can charge your 3500 mAH mobile phone battery 3 times as 3500 X 3 = 10500. But this is NOT TRUE! There is nothing as of FAULTY in this power bank or this is a CHEAP QUALITY power bank!---] Even if you will buy the best branded power banks, you will see the SAME CASE with them also. Their are two reasons for this i.e. (If you don't want to go into a bit of technicalities, please SKIP the two points mentioned below!)__________________________________________________________________________________________________________________1. The voltage with which power banks' battery provide is 3.7 Volts but the USB port works at 5 Volts so their is a voltage up conversion. When this five Volts will reach to your mobile phone, it will convert the 5V to 4.2V - 4.4V as it is ideal voltage for smartphone's battery to charge.---] Thus, their is a voltage down conversion. So, considering this fact, you can calculate the capacity of power bank considering THIS fact as;(Let us take we are calculating it for this power bank of 11000 mAH capacity)3.7/4.2 X 11000 = 9690 mAH---] Wait, but this is an ideal capacity and their is no machine which is 100% efficient. Now comes the second point.2. Due to heat loss and various other small-small energy losses, the IDEAL capacity is further reduced by around 20%. So, finally what capacity you get is,9690 X 80% = 7750 mAH approx.---] Therefore, if you have a 3500 mAH smartphone battery, you can charge it for around 2 times only.__________________________________________________________________________________________________________________---] Coming back to my experience, this particular power bank charges my smartphone Redmi Note 3's battery of 4050 mAH from 10% to 90% two times with the complete charge of the power bank. So, that's good and practical with the capacity we calculated above. It comes with three USB 2.0 ports and not with a single USB 3.0 ports. So, no fast charging mate!---] It has a torch which is okay and I use it when I have to find the main torch when electricity goes off. The design is basic but steady. It is plastic and not metal with a button at the top to switch on/off the power bank. There are 4 LED lights which indicate the level of charge of the power bank.__________________________________________________________________________________________________________________---] Overall, I highly recommend this power bank because of the following points;1. Intex is a OLD and GOOD brand and has various service centers in various cities of India.2. The power bank is COMPACT and STEADY.3. The torch of the power bank is also a plus point.4. The availability of three USB Ports is more than sufficient.5. USB charging cable is provided with the power bank.6. 1 Year Warranty by Intex.---] It would have been icing on the cake if it had a single USB 3.0 port but I think due to the low price, it would not have been economic to put it. To conclude, I am VERY happy with this product. This product is surely worth of Rs.929 and I HIGHLY RECOMMEND you to buy it!__________________________________________________________________________________________________________________---] And, THANK YOU FOR YOUR TIME AND PATIENCE. I really mean it and appreciate it. If you have any questions regarding this device, FEEL FREE to COMMENT by clicking on comment button below and I will surely answer all your queries as soon as I see them.

Gets charged up reasonably quickly with a 2A charger(about 6 hours) Haven't tried to charge with a 2.1 A charger yet though the company says it is OK. In discharging over a week, I could get 7500 mah in total(2 cycles of testing so far) Not bad but not brilliant either. The main problem is that unlike my Asus Power Bank or my PNY Power Bank, this does not seem to slow down its charging of a phone during the last stage(85% and up) even when you use a battery app like Du Battery on the phone. Because of this, there is heating up and probably some damage to the phone battery(Note 2 in my case) over the last stage. The phone also discharges more quickly from 100% to 85% when charged with this. I don't think this has any safety sensors in place to reduce current when more heat is produced etc. So advice users to only charge in the range 20% to 85% using this powerbank(That is generally good advice for most powerbanks as most phone batteries can be charged at a much higher current in this range and your charging will be much faster) Haven't checked charging with even two ports at a time, let alone all three. But the 1 A outlet port can safely charge Nokia Lumia phones without overheating. I could also charge my Kindle Paperwhite without heating from the 1 A port. The device is heavy but well-built. Nothing shakes inside when you shake the device. Overall, seems OK. Will update this review after more thoroughly testing.For the momentPros:Build qualitySpeed of charging(both itself and devices you charge using this)Decent efficiency over a a week(including the effect of leaking of charge etc. You may get more backup if you use up the power over 3 days)1 A port can charge Nokia Lumia phones and Kindle Paperwhite without heating or any other problemsConsSeriously bulky - both heavy and largeThe 2.1 A ports not good for charging devices with an even mildly lower rating in the last stage. Will not slow down. No safety sensors in evidenceSlightly loose USB ports. Check for 5 minutes for any heating up whenever you hook up something to charge off the power bank or the power bank itself to charge.