Universal serial bus powered battery charger

Usage counter for portable jump-starting battery unit

Use of double cells to power an implantable medical device

Variable battery refresh charging cycles

Variable on demand energy source

Vehicle having a battery with multiple cells and method for...

Voltage control system and vehicle comprising voltage...

Voltage detection device and electric vehicle including...

Voltage generator switching between alternating, first and...

Voltage indicator for indicating that the voltage of a...

Voltage monitoring circuit for rechargeable battery

Voltage sensor module and voltage monitoring apparatus

Voltage threshold device and energy storage cell failure...

Watercraft battery control system

Wireless power storage device comprising battery,...