You can go for Amrane P-60 Power bank which comes with a good dimension of 19 x 11.2 x 3.2 cm which doesn't looks bulky or make you embarrass while travelling. It comes with 5400mAH built-in Lithium-ion battery comes with Quick Charge with High Current technology. You can buy it from www.amazon.in which costs you Rs. 999.
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1. Ambrane P1000 Star Available at a rating of 10400 mAh, this power bank has dimensions of 71x 24mm. It carries a 1 A and a 2.1 a ports. Priced at Rs. 949 on Flipkart, it is also available with other online stores at around the same price.
2. Ambrane PP 6000 This 6000 mAh power bank has 5 hours of charging time. The power bank is available on flipkart at Rs. 930 and also with other online stores like paytm.
3. Ambrane CP5200 Priced at Rs. 850 on paytm, this power bank has only 1A port.