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+== Installation
+
+	A typical installation involves attaching
+	only a suitable battery, a single pole switch for
+	power on/off, and two pairs of wires connecting e-matches for the
+	apogee and main ejection charges.  All Altus Metrum products are
+	designed for use with single-cell batteries with 3.7 volts
+	nominal.
+	ifdef::telemini[TeleMini v2.0 and]
+	EasyMini may also be used with other
+	batteries as long as they supply between 4 and 12 volts.
+
+	The battery connectors are a standard 2-pin JST connector; you
+	can purchase suitable batteries from the any vendor selling
+	Altus Metrum products. These batteries are
+	single-cell Lithium Polymer batteries that nominally provide 3.7
+	volts.  Other vendors sell similar batteries for RC aircraft
+	using mating connectors, however the polarity for those is
+	generally reversed from the batteries used by Altus Metrum
+	products. In particular, the Tenergy batteries supplied for use
+	in Featherweight flight computers are not compatible with Altus
+	Metrum flight computers or battery chargers.
+
+	[WARNING]
+	Check polarity and voltage before connecting any battery not
+	purchased from Altus Metrum.
+
+	[WARNING]
+	Spark Fun sells batteries that have a matching connector with
+	the correct polarity. However, these batteries include an
+	integrated current limiting circuit. That circuit will cause
+	the battery to shut down when firing the igniter circuit. Do
+	not use these batteries unless you remove the current limiting
+	circuit.
+
+	By default, we use the unregulated output of the battery
+	directly to fire ejection charges.  This works marvelously
+	with standard low-current e-matches like the J-Tek from MJG
+	Technologies, and with Quest Q2G2 igniters.  However, if you
+	want or need to use a separate pyro battery, check out
+	<<_using_a_separate_pyro_battery>> for instructions on how to wire
+	that up. The altimeters are designed to work with an external
+	pyro battery of no more than 15 volts.
+
+	Ejection charges are wired directly to the screw terminal block
+	at the aft end of the altimeter.  You'll need a very small straight
+	blade screwdriver for these screws, such as you might find in a
+	jeweler's screwdriver set.
+	ifndef::telemini[]
+	The screw terminal block is also used for the power switch leads.
+	endif::telemini[]
+
+	ifdef::telemini[]
+	Except for TeleMini v1.0, the flight computers also use the
+	screw terminal block for the power switch leads. On TeleMini v1.0,
+	the power switch leads are soldered directly to the board and
+	can be connected directly to a switch.
+	endif::telemini[]
+
+	ifdef::radio[]
+	For most air-frames, the integrated antennas are more than
+	adequate.   However, if you are installing in a carbon-fiber or
+	metal electronics bay which is opaque to RF signals, you may need to
+	use off-board external antennas instead.  In this case, you can
+	replace the stock UHF antenna wire with an edge-launched SMA connector,
+	and, on TeleMetrum v1, you can unplug the integrated GPS
+	antenna and select an appropriate off-board GPS antenna with
+	cable terminating in a U.FL connector.
+	endif::radio[]