AngelCare AC1100 USB charger

Our receiver for the AngelCare AC1100 baby monitor has a short battery life and a spare charger was £15. Being the cheapskate that I am I built this USB charger for the monitor.
It uses an Adafruit microUSB breakout board, a small phone charger board which I've modified, a couple of M3x12 bolts and some paperclips to mimic the OEM charger.

MicroUSB breakout board: https://www.adafruit.com/products/1833
Boost converter: http://www.banggood.com/3V-To-5V-1A-USB-Charger-DC-DC-Converter-Step-Up-