Reddit reviews Solove Titan 20000mAh Ultra Slim Power Bank Dual USB Portable Charger External Battery Pack for iPhone, iPad, Galaxy, Nexus, Gopro and Android Smart Devices (Silver)
We found 1 Reddit comments about Solove Titan 20000mAh Ultra Slim Power Bank Dual USB Portable Charger External Battery Pack for iPhone, iPad, Galaxy, Nexus, Gopro and Android Smart Devices (Silver). Here are the top ones, ranked by their Reddit score.
for a quick search, something like this: https://www.amazon.co.uk/Titan-20000mAh-Portable-Charger-External/dp/B00ZK4P2CC/ref=sr_1_2?ie=UTF8&qid=1468044171&sr=8-2-spons&keywords=20000mah+power+bank&psc=1
Not sure if amazon uk deliver to your country, I use the german one for mine.