In my blog post about Panasonic Mobile Booster QE-QL101 last year, I did mention about the large capacity portable battery from Panasonic which has a capacity of 10,260mAh. I did not manage to find that in Singapore. Instead, I saw it in Thailand and I bought it for TH฿3,990 (S$160.40), and after a 7% VAT refund, it cost about S$150.
Don’t let its massive physical appearance deceive you. It is pretty light weighing at 490g. It is slim as well, and the thickness is almost the same as a standard USB port.