Great Planes GPMM3322 User Manual

®

MICRO DC 2S LIPO CHARGER

The ElectriFly® LiPo Battery Charger is great for simple balance
charging of 2-cell lithium-polymer batteries for small electric
models. Use it only to charge batteries within a capacity range
of 150 to 750mAh.

SPECIFICATIONS

Input voltage: 11.7V–15V DC
Battery types, # cells: 2 lithium-polymer cells

connected in Series
(7.4V LiPo)

Charge current: 450 mA maximum
Charge method: CC-CV (current drop-off

termination)

Battery capacity: 150 – 750 mAh
Status indicator: Two LEDs;

one green, one red
Input connectors: polarized DC power jack
for DC input

Output connectors: one 2S balance plug
Case size: 2.18” x 1.13” x 3.26”

[55
Weight: 2.1 oz. [59 g]

x

28 x 82 mm]

● Disconnect the battery from the charger immediately
and remove to a fi reproof location if the battery begins
to swell or smoke!

● Only use the included car adapter or approved AC
adapter to power the charger.

● Do not use charger with car running.

● Do not allow water, moisture or foreign objects into the

charger.

● Do not block the air intake holes, which could cause the
charger to overheat.

● Do not place the charger or any battery on a fl ammable
surface or near a combustible material while in use.

● Do not charge on a carpet, cluttered workbench, paper,
plastic, vinyl, leather, wood, or inside an R/C model.

● Never charge inside a full-sized vehicle.

● Always disconnect charger from input power when not

in use.

● Do not attempt to charge a battery if it is swollen or hot.

● Keep out of reach of children.

SPECIAL FEATURES

● A very economical, portable and simple way to balance
charge LiPo batteries

● Specifi cally designed for 2-cell 7.4V lithium-polymer
batteries only

● “Constant current/constant voltage” charge method

● Automatically starts charge upon connection of battery

to the balance plug

● 450 mA maximum charge current requires no
adjustment

● Twin LEDs indicate charging status

IMPORTANT PRECAUTIONS

● Charge only lithium-polymer (LiPo) rechargeable
batteries that are 2S (2 cells in series) 7.4V nominal
voltage, from 150mAh to 750 mAh, which have a
balance connector.

● Do not attempt to use this charger with NiCd, NiMH or
different types of Lithium-Ion batteries as they are not
compatible!

● Do not leave the charger unattended while charging.
Disconnect the battery and remove input power from
charger immediately if either becomes hot! However, it
is normal for the charger to get warm.

IMPORTANT!! ALWAYS charge a LiPo battery in a
location that is fi reproof. NEVER leave the battery
unattended while being charged! If the battery feels
warm during charge, remove the battery at once and
disconnect the charger from the power source.

Heat-resistant LiPo charging bags (GPMP0751) provide
additional safety when charging and are available
through your hobby supplier.

Use only approved power input accessories – the
included car adapter and AC adapter (also available
separately GPMM3310).

To charge a battery:

1. Connect input power to

the charger. The GREEN
LED will be lit, indicating
standby mode. The RED
LED will be OFF.

2. Connect the battery to
be charged to the balance
plug. The RED LED will also be lit, and remain RED during
charging. Both LEDs should be lit solid while charging.

CHARGING BATTERIES

3. When the battery is fully charged, the GREEN LED will turn
OFF. Remove the battery from the charger at this time.

4. Charging time depends on level of discharge and capacity
of the battery. To estimate how long it should take to charge an
empty battery, divide the capacity of the battery in mAh by the
charge rate in milliamps:

200 mAh battery / 450 mA ~ 30 minutes
350 mAh battery/ 450 mA ~ 50 minutes

LED scheme – Use this table to determine charge action:

RED LED GREEN LED ACTION

OFF Solid ON No battery is connected
OFF Flashing Conditioning battery
Solid ON Solid ON Battery charging
Solid ON OFF Charge complete
Flashing Flashing ERROR

Possible sources of battery error may include a highly unbalanced
pack, charger timed out, or one cell in the pack which is low
voltage. In the case of a battery error, please remove the battery
pack from the charger and inspect it carefully for swelling or any
other damage, such as broken wires.

1-Year Limited Warranty – *USA and Canada Only

Great Planes® warrants this product to be free from defects
in materials and workmanship for a period of one (1) year
from the date of purchase. During that period, Great Planes
will, at its option, repair or replace without service charge
any product deemed defective due to those causes. You will
be required to provide proof of purchase (invoice or receipt).
This warranty does not cover damage caused by abuse,
misuse, alteration or accident. If there is damage stemming
from these causes within the stated warranty period, Great
Planes will, at its option, repair or replace it for a service
charge not greater than 50% of its then current retail list
price. Be sure to include your daytime telephone number in
case we need to contact you about your repair. This warranty
gives you specifi c rights. You may also have other rights,
which vary from state to state.

For service on your Great Planes product, warranty or non­warranty, send it post-paid and insured to:

HOBBY SERVICES [phone]
3002 N. Apollo Drive, Suite 1
Champaign, IL 61822

*For warranty and service information if purchased outside
the USA or Canada, see the additional warranty information
insert (if applicable) or ask your retailer for more information.

www.greatplanes.com www.electrifl y.com

LITHIUM BATTERY HANDLING & USAGE

ONLY use a LiPo approved charger. NEVER use a NiCd/
NiMH peak charger to charge a LiPo battery.

NEVER charge in excess of 4.20V per cell.

ONLY charge through the “charge” lead. NEVER charge

through the “discharge” lead.

NEVER charge at currents greater than 1C unless the
battery is rated for a higher charge rate.

ALWAYS set the charger’s output volts to match the
battery volts.

ALWAYS charge in a fi reproof location.

NEVER trickle charge.

NEVER allow the battery temperature to exceed 150

degrees F (65 degrees C).

NEVER disassemble or modify the pack wiring in any way
or puncture the cells.

NEVER discharge below 2.5V per cell.

NEVER place the battery or charger on combustible

materials or leave it unattended during charge or discharge.

ALWAYS KEEP OUT OF THE REACH OF CHILDREN.

NEVER charge the battery in the plane.

ALWAYS remove the battery from the plane after a crash.

Set it aside in a safe location for at least 20 minutes. If
the battery is damaged in the crash it could catch fi re.

If the battery starts to swell, quickly move the battery to
a safe location, preferably outside. Place it in a bucket,
covering the battery with sand. Never use water to try and
put out a LiPo fi re.

© 2012 Hobbico, Inc. All rights reserved.

GPMM3322INSTR