Backup Battery Pack with 4000mAh Lithium Ion Polymer Battery
Get a power boost! BoostBloc4000 from Etón is a backup battery pack with a 4000mAh lithium ion polymer battery that provides long-lasting reliable power whenever and wherever you need it. Fast and efficient, when fully charged BoostBloc4000 fully charges most smartphones two times, so you're never caught powerless.
With its sleek and elegant design, BoostBloc4000 fits in the palm of your hand. BoostBloc4000 features a Micro-USB DC input to use with most smartphone chargers and a standard USB port for charging any mobile device.
An LED charge indicator lets you monitor the battery charge level when you give it a quick shake. Whether you're on a plane or trekking in the woods, let BoostBloc4000 provide the power you need to stay fully charged wherever you are.
Backup battery pack with rechargeable 4000mAh lithium ion polymer battery
Fully charges most smartphones two times when fully charged
USB output to charge smartphone
LED battery charge indicator
Shake unit to check battery level
Micro-USB DC input for use with smart phone chargers (iPhone block, etc.)