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Xantrex Technology 250 User Manual

Page 23

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8.4 Recharging with a Generator’s 12-Volt DC

Power Outlet

Recharging Portable Power 250 from a generator using the AC

Charger is possible, but would require extended generator

running time. Since many generators have an auxiliary

regulated 12-volt DC output designed for charging 12-volt

batteries, using this power source will result in much faster

charging. If the generator has a cigarette lighter style socket

for its 12-volt output, follow the connection instructions in

Section 8.3.
Most of Portable Power 250’s capacity will be recharged in

about 1 to 3 hours. The charge level can be verified using

Portable Power 250’s Battery Level Indicator after

disconnecting from the charging source as explained in Section

4.1.

CAUTION: The generator output must be intended for

battery charging. An unregulated output or one that

exceeds 15 volts DC can damage the battery.

8.5 Recharging with a Solar Panel

Small unregulated 12-volt solar panels rated to produce a

maximum of 3 amps (or 40 watts) can be used to charge Portable

Power 250 via the Charger Input Socket. You will need to

purchase a standard 5.5 mm OD x 2.5 mm ID “DC Coaxial (Barrel

Type) Connector” to mate with the Charger Input Socket.

Connect the solar panel’s positive (red) wire to the coaxial

plug’s inner contact and the solar panel’s negative (black) wire

to the plug’s outer contact. Once the connector is inserted into

the Charger Input Socket and the solar panel is placed in the

sun, Portable Power 250 will charge automatically just as with

the AC Charger. (See Section 8.2.) A 3-amp solar panel will

charge Portable Power 250 in about 8 hours in direct sunlight.