Overall playtime depends on how you use your Ultimate Ears Speaker, with things like the type of music and volume level all affecting the overall playtime. However, when played at roughly mid-volume, you can expect you can expect up to the listed hours of playtime from one full charge.
Using the USB cable provided, and a standard USB port (e.g. Laptop) it will take approximately 5 hrs. 30 mins to recharge your Ultimate Ears Speaker to 100%. BOOM 2 can also be charged with most USB chargers and times will be faster depending on the output of the USB charger you use. Never charge your Ultimate Ears Speaker if the micro-USB port, charging cable or connectors are wet, dirty or damaged. Always charge your speaker with a clean, dry micro-USB connector. If you think your cable or connector has been compromised in any way by water or other contaminants, do not use it to charge your speaker. Contact us for a replacement cable.