This is a value for money good performance product. Ideal for those who need backups for long duration. I would like to clarify some common misunderstandings about power banks. Capacity The capacity mentioned is that of the cells used inside the power bank. So in this case its 10400mAH. But we should consider the voltage of the cells to understand the final capacity we will get from it. Most of the power banks uses the standard capacity cell which is 3.6V and 2600mAH. So this power bank contains 4 cells of 2600mAH in parallel and hence the total is 10400mAH. But the output voltage we need is 5V - the standard supply voltage of USB ports. So this 3.6V need to be converted to 5V which will result in some conversion loss also. So after conversion (3.6/5) it is 0.72, ie 72% of 10400mAH. If we assume the conversion loss as 10% then the effective capacity will be 62%. So finally we can expect a maximum capacity of around 60% of 10400 = 6240mAH. This should be sufficient for 2 full charges of most of the mobile phones. Charging Time. If we compare the charging time with that of a smaller capacity power bank then obviously it will be more as the number of cells inside is more. This is because the normal charger we use is of fixed capacity and is intended to charge a mobile phone. The capacity of the charger is not increasing based on the power bank we connect to it to charge. So more the capacity of power bank the more time it takes to recharge. Size and Weight. This is self explanatory as the number of cells used inside increases the size and weight also increases.

Look and feel: product look fine overall. there were few minor scratches on display where we can find Charging lights. Charging and Usage: Supa product.....amazing back and lovely seep of charging Cons: Its kinda bulky and not one to carry in pocket. however its pretty small consideing its 10400 MAH battery. Overall: Supa like

After using this power bank for 4 months, I can easily say that it is right upto the mark. I have Nexus 5 which packs a 2300 mah battery. The P-1000 claims to have 10400 mah, which means it should charge it at least five times. Well, it almost does. It charges my nexus 5 four times with bit of charge left to charge it till 50%. One thing more which I like in this product is the simple 4 blue LED battery level indicator. I believe that this saves more for juice for your phone than a fancy LCD display showing percentage of battery left.