Four-Play Pro
Single
cell
Li
Po
charger
Charge
Four
batteries
while
you
Play
with
your
plane
or
heli.
Four
Play
Pro
charging
one
130mAh,
two
110mAh
and
one
70mAh
batteries
Extend
your
battery
life!
Don’t
overcharge
your
batteries,
stock
chargers
charge
at
over
3C
and
shorten
battery
life.
Each
battery’s
charge
current
is
adjustable
from
20ma
to
400mA.
Fly
More!
Charge
one
to
four
single
cell
Li
‐
Po
batteries
simultaneously.
Charge
away
from
home
without
AC
power!
Use
any
3
cell
Li
‐
Po
battery
for
power
when
you
are
away
from
home.
Automatic
shut
off
if
battery
drops
below
9.6V.
Charge
up
to
400mA!
Be
ready
to
charge
the
next
generation
of
higher
capacity
batteries.
Easy
to
use!
Just
plug
in
the
battery,
the
CHARGE
LED
is
green
when
charging
and
red
when
done.
Be
Green!
Don’t
waste
alkaline
batteries
to
power
your
charger.
Charge
any
single
cell
Li
‐
Po!
You
are
not
limited
to
just
charging
E
‐
Flight
batteries,
the
Four
‐
Play
Pro
can
charge
any
single
cell
Li
‐
Po
from
auxiliary
battery
connections.
Designed
and
Manufactured
in
the
USA
Optional
12VDC
wall
adapter.
Adapter
power
on
left,
Li
Po
power
on
the
right.
1
Specifications
Input Voltage
Any DC power source from 10 to 24 Volts DC that can supply 0.8 Amp. The Four‐
Play Pro will automatically turn off if the input voltage drops below 9.6 Volts . This
will protect a 3‐cell Li‐Po battery if used to power the Four‐Play Pro.
Input Connections Terminal strip and power connector to accept 2.1mm ID x 5.5mm connector with
center pin positive.
Output
Charges single cell Li‐Po batteries to 4.2 volts at any current from 20 to 400 mA.
Battery Capacity Charges 1 to 4 single cell Li‐Po batteries simultaneously.
Charge receptacle Fits E‐Flite, ParkZone or Kyosho single cell Li‐Po batteries for the Vapor, Blade mCX
or similar airplanes
/
helicopters
.
Auxiliary battery connections for other single cell
Li‐Po batteries are supplied.
Introduction
Please
read
these
instructions
carefully
and
completely
before
you
use
the
Four
Play
Pro.
Refer
to
the
illustration
on
page
3
for
reference.
The “buy and fly” micro aircraft introduced by Kyosho, ParkZone and E‐Flite are very popular and have
opened another readily accessible area of model aviation to both beginner and advanced modelers
alike. Unheard of 10 years ago, these aircraft were made possible with the recent introduction of
spread spectrum radios and small Li‐Po batteries. New models with better performance and higher
capacity batteries have been evolving rapidly. The only part of the system that has remained stagnant
is the battery charger. The chargers supplied with these models are virtually identical. They charge
one cell at a time, are powered with expensive alkaline batteries and charge both 70mAh and 110mAh
batteries at over 250mA. This high charge rate the dramatically shortens the life of the Li‐Po battery.
The Four‐Play Pro was designed to give dedicated modelers a more flexible charger. It will charge 4
independent cells simultaneously, can be powered with any DC voltage source from 10V to 24V,
including common 3‐cell Li‐Po packs, and the charge rate for each cell is adjustable from 20mA to
400mA in 10mA increments. With this unique system you can charge at a higher rate while at the gym
with a group of friends to get more flights in, and then scale back to a 1C rate at home to extend the life
of your flight batteries.
2
Safety
You
must
read
these
safety
instructions
and
warnings
before
using
the
Four
Play
Pro
The
Four
Play
Pro
was
designed
exclusively
for
charging
single
cell
LiPo
batteries.
DO
NOT
TRY
TO
CHARGE
MULTI
CELL
LIPO
BATTERIES!
DOING
SO
MAY
DAMAGE
THE
CHARGER,
AND
WILL
SHORT
THE
BATTERY
AND
POSSIBLY
CAUSE
A
FIRE
.
Lithium
Polymer
batteries
are
volatile,
improper
charging
may
cause
a
fire.
Failure
to
read
and
follow
these
instructions
may
result
in
fire,
personal
injury
and
damage
to
property.
EF
Technologies,
Inc,
its
distributors
and
retailers
assume
no
liability
for
failure
to
comply
with
these
warnings
and
safety
guidelines.
By
purchasing
this
charger,
the
buyer
assumes
all
risks
associated
with
this
product.
If
you
do
not
agree
with
these
conditions,
please
return
the
charger
immediately
before
use.
Never
charge
batteries
unattended.
When
charging
LiPo
batteries
you
should
constantly
monitor
the
charging
process
and
react
to
potential
problems
that
may
occur.
If
at
any
time
you
witness
a
battery
starting
to
balloon
or
swell
up,
discontinue
the
charging
process
immediately.
Disconnect
the
battery
and
place
it
in
a
safe
observation
area
for
approximately
15
minutes.
Continuing
to
charge
a
battery
that
has
begun
to
swell
may
result
in
a
fire.
If
using
an
external
battery
to
power
the
Four
Play
Pro
do
not
attach
bare
wires
from
the
battery
to
the
INPUT
TERMINAL,
you
may
short
out
the
external
battery
and
cause
a
fire.
Always
attach
an
adapter
with
a
connector
compatible
with
the
connector
on
your
battery
to
the
INPUT
TERMINAL
first
then
plug
your
battery
