We've all been there. Gone to make that important phone call only to find out your phone's battery has died. Not me you cry, you've got a battery charger, but wait you've forgot to charge that too. Doh.  

But what if that portable battery had enough power to charge an iPhone 6 around seven times, an iPhone 6 Plus four times, a Samsung Galaxy S6 five times, and an iPad Air with its huge battery once?

Enter the Lumsing Harmonica Series Dual-USB Portable Battery Charger 16000mAh External Power Bank and the good news is, Lumsing is offering Pocket-lint readers in the UK and the US up to 26 per cent off the recommended retail price until the end of March 2016. In the UK that's a saving of £6 and in the US, $8.   

Enclosed in an aluminum case, the compact battery charger (it measures 5.4 x 2.3 x 0.8 inches) easily fits into your bag for business trips and means that you never have to worry about finding a plug socket when it comes to charging your phone or tablet on the go again.

The Lumsing Harmonica battery comes with a short length USB to micro USB charging lead and has 4 charge power indicator lights (roughly 25 per cent, 50 per cent, 75 per cent, and 100 per cent).

It has two USB output charging ports. One of them allows you to charge more power power hungry devices like an iPad quickly. The battery pack also feature Fast Charge Technology to deliver the fastest possible charge based on the device you are connecting.

To get your discount, go to Amazon.co.uk or Amazon.com and enter the discount codes below. 

The deal starts from today and will end at 23:59 local time on the 31 March 2016. 

UK URL: http://amzn.to/1L6SLkN

UK discount code: A6CSUGNJ

US URL: http://amzn.to/1TtJ6aX

US discount Code: LZOALDDO