We know that battery health is one of the biggest concerns for most people, and that's why we have the Mobile Monster Battery Health Guarantee.
Every device we sell is tested thoroughly though our Mobile Monster 72 Point Check process. As part of our 72-Point Check, we test the batteries of the device, to ensure that your device is still in its peak performance of at least 80% battery health.
Battery Health (min 80%)
Sensors
Microphone 
WiFi
Charger/Jack 
Carrier Signal
Speaker
Water Damage
Camera
Mobile Data
Screen
Bluetooth
