{{Technology Infobox
|image=FileBattery HL1.jpg|130pxFileHEV battery.jpg|120px
|affiliation=*Black Mesa
*Hazardous Environment Combat Unit|HECU
|type=Power source
|usedby=*Black Mesa scientists
*Gordon Freeman
*Adrian Shephard
*Gina Cross
*Colette Green
The '''Battery''' is a power source item featured in the Half-Life universe|''Half-Life'' universe.

In ''Half-Life'' and Expansions|its expansions, the protagonists who wear Hazardous Environment Suit|HEV Suits can find and pick up batteries to power up their suits. The suit generates protective armor when it has a power supply. When picked up, the suit provides a voice message to report the new power level. Adrian Shephard, as well as other Hazardous Environment Combat Unit|Marines, can also use them to charge their Powered Combat Vests.

In ''Half-Life 2'', Gordon Freeman's old suit was modified by Isaac Kleiner to allow the use of Combine batteries. Combine Scanners may drop Batteries when they’re destroyed.

==Behind the scenes==
In ''Half-Life'', the unused HEV Suit line refers to the Battery as an HEV Power Unit. There were several items powered by the Battery, including the Long Jump Module, Alien Cloak and Alien Shield.Half-Life SDK|''Half-Life'' SDK In ''Half-Life 2'', the original model was used as a placeholder during the development of the game, only with a smaller size.Half-Life 2 leak|''Half-Life 2'' leak

===''Half-Life'' and its expansions===

FileBattery day one.jpg|''Day One'' Battery.
FileBattery HL1.jpg|''Half-Life'' Battery.
FileBattery HL1HD.jpg|With the unused skin.
FileEarly sci laboratory.jpg|Early Battery.
FileT0a0b10004.jpg|Batteries scattered in the dark room in the Hazard Course.
FileFreeman locker 2.jpg|Battery in Gordon Freeman's locker.
FileC4a20001.jpg|Battery near the corpse of a survey team member on Xen.
FileSurvey member dead weapon box Xen.jpg|Batteries near the corpse of a survey team member on Xen.

===Half-Life 2 and its episodes===

FileBattery pickup.svg|HUD pickup icon.
FileBattery HL2 leak.jpg|''Half-Life 2'' leak Battery.
FileHEV battery.jpg|''Half-Life 2'' Battery.
FileCity 17 logo retail.svg|City 17 logo as seen on top of the Battery.
FileStation 6 rebel firing.jpg|Battery on a table at Station 6.
File2012-02-12 00007.jpg|Battery on a table at Gate 5.

==List of appearances==
*''Half-Life Day One'' {{1st}}
*''Half-Life Uplink'' {{Nc}}
*''Half-Life Opposing Force''
*''Half-Life Blue Shift''
*''Half-Life Decay''
*''Half-Life 2''
*''Half-Life 2 Deathmatch'' {{Nc}}
*''Half-Life 2 Lost Coast'' {{Nc}}
*''Half-Life 2 Episode One''
*''Half-Life 2 Episode Two''


==See also==
*Car battery

{{Black Mesa}}
CategoryBlack Mesa technology
CategoryCombine technology