If you are looking for a external battery for your phone or tablet then there is no better name in the market than Mophie. This Powerstation Boost Xl features a 10,400mAh which boasts up to 48 hours of additional battery life.
Mophie is the best selling brand for external battery and trusted by many. The company backs this battery with a 2 year warranty. The battery comes in black and is a bit weighty but not too bad. It had no trouble charging up my Galaxy S6 right up. The company triple test each battery for safety and reliability. This is especially important with all the recent news of batteries exploding.
Amazon sells the mophie powerstation Boost XL External Battery for Universal Smartphones and Tablets (10,400mAh) - Black for $50 and is well worth the price. Buy it now HERE