Introduction
Thank you for purchasing this high-end competition charger.
This charger is a high performance computerized battery maintenance system.
Capable of charging, discharging, cycling and conditioning multiple rechargable
battery types, with very high output power, a customized display with expertly
designed software and programming controls, the Overloader2 is easily one of
the smartest and most powerful R/C battery maintenance systems available!
NOTE: You will find a transparent protective plastic film on the front plate.
Please remove this film before the first usage.
- Perfect for electric cars, trucks, boats and planes
- Handling NiCd / NiMH / Li-Ion / Li-Po / Pb battery types
- Restart of charge and discharge after a loss ao power
- Symbol aided graphical screens
- Graphical display show charge, discharge and cycle curves
- Storing up to 10 different battery configurations
- Performs 1 - 10 cycles for NiCd / NiMH only, and stores capacity and voltage date
for all 10 cycles
- Break-in electric motors ( 1.0 - 8.0 V, 10A constant) or operate commutator lathes
- Heat glow plugs for nitro engines
- Operate tire warmers
- Intuitive program menus and simple pushbutton control
- Intelligent cooling fan control system for better charge efficiency and extended charger life
- Language, LCD contrast, fan operation, temp scale and sound cues are fully adjustable
- Popups for information and warnings
- packaged in a red-colored rugged, extruded aluminium case
Special features
2
Precautions !
- Do not charge or discharge battery types other than nickel-cadmium (NiCd),
- nickel-metal hydride (NiMH), Lithium-Ion (Li-Ion) or Lithium-Polymer (Li-Po)
- rechargeable batteries. Damage may occur from other types of batteries.
- Do not attempt to charge batteries at excessive fast charge currents.
- Do not use automotive type battery chargers to power the charger.
- Do not leave the charger unattended while charging. Disconnect the battery and
- remove input power from charger immediatly if the charger becomes hot.
- Allow the charger or battery to cool down before reconnecting.
- Do not allow water, moisture or foreign objects into the charger.
- Do not place the battery or the charger on or near a flammable object while in use.
- Keep away from carpets, cluttered workbenches, etc.
- Do not cover the air intake holes on the charger as this could cause the charger
- to overheat.
- Always disconnect charger from power source when not in use.
Safety note for Li-Ion and Li-Po batteries !
- Do not allow Li-Ion or Li-Po batteries to overheat!
- It is very important to know the battery’s nominal rated voltage before
- charge or discharge.
- Li-Po batteries: 2-cell pack wired in series -> total voltage will be 7.4 V (2x 3.7V)
- Li-Ion batteries: 2-cell pack wired in series -> total voltage will be 7.2 V (2x 3.6V)
- ALWAYS make sure to set the correct Li-Ion or Li-Po battery voltage
- ( 3.6V per cell for Li-Ion and 3.7V per cell for Li-Po)
- Do not attempt to use the NiCd or NiMH mode for Li-Ion or Li-Po batteries.
- Do not attempt to charge Li-Ion or Li-Po batteries at greater than “1C” rating
- of the battery.
- Do not attempt to repeatedly charge Li-Ion or Li-Po batteries.
- If Li-Ion or Li-Po batteries overheat, please immediatly disconnect batteries
- from the charger!
3
Specification
4
Description Settings Step
General
Case type Aluminium, anodized
Cooling system Aluminium heat sink, 3 x Fan 40mm
Display type Graphic LCD, 128x64 Pixel
Input type Input cable with banana plugs black/red
Output type Banana jacks black/red
Input voltage 11-15V
Battery types NiCd, NiMH, LiPo, LiIon, Pb
Battery memories 10
Powerlimit charge 120W
Powerlimit discharge 180W
Graph storage time up to 22h 45min 20sec
Settings
Name 15 characters, A-Z,a-z,0-9, special chars
Language English, Geman, French
Fan control Auto, On
Temperature mode °C, °F
Button sound Off, On
Fini sh sound 1-11 1
Finish sound repetitions 1-10 1
Info sounds Off, On
Graph resolution 1, 2, 5, 10s/p
LCD contrast 0-20 1
LCD backlight Off, On
Motor break-in menu Off, On
Glow-plug menu Of f, On
Tire warmers menu Off, On
Motor break-in
Run Time 1min - 23h 59min 1min
Voltage 0,1-8,0V 0,1V
Current max 10,0A
Glow-plug
Voltage 0,1-2,5V 0,1V
Current max 10,0A
Tire warmers
Temperature 45-75°C / 113-167°F 1°C / 1°F
Voltage 13,5V
Current max 10,0A
Profiles
Profilnumber 0-9 1
Profilname 8 characters, A-Z,a-z,0-9, special chars
Capacity 100-15000mAh 100mAh
Charge current 0,1-10,0A 0,1A
Discharge current 0,1-20,0A 0,1A
Cutoff temperature 20-70°C / 68-158°F 1°C / 1°F
maxim um charge capacity 100-140% 1%
Specification
5
Description Settings Step
specific for NiMH/NiCd
Charge mode Linear, Impulse, Reflex , Auto, 4-Step
Cells 1-12 1
deltaPeak/cell 1-30mV 1mV
Peak-Lock time 1-50min 1min
Trickle current Off, 10-400mA 10mA
1-6 cells - max 20,0A
7 cells - max 17,0A
8 cells - max 15,0A
9 cells - max 13,5A
10 cells - max 12,0A
11 cells - max 11,0A
12 cells - max 10,0A
Cutoff v oltage/cel l 0,5-1,2V 0,1V
Cycle mode Off, C->D, D->C, (D)C->D
Numbers of cycles 1-10 1
Cycle wait mode Time, Temperature
C->D Delay 1-240m in 1min
D->C Delay 1-240m in 1min
C->D temperature 20-70°C / 68-158°F 1°C / 1°F
D->C temperature 20-70°C / 68-158°F 1°C / 1°F
specific for LiPo
Charge mode CC-CV
Cells 1-4 1
Charge end voltage/cell 4,2V
1-2 cells - max 20,0A
3 cells - max 13,5A
4 cells - max 10,0A
Cutoff v oltage/cel l 2,7-3,7V 0,1V
specific for Lixx
Charge mode CC-CV
Cells 1-4 1
Charge end voltage/cell 3,3-4,3V 0,1V
1-2 cells - max 20,0A
3 cells - max 13,5A
4 cells - max 10,0A
Cutoff v oltage/cel l 2,0-3,7V 0,1V
specific for Pb
Charge mode CC-CV
Cells 1-6 1
Charge end voltage/cell 2,35V
1-3 cells - max 20,0A
4 cells - max 15,0A
5 cells - max 12,0A
6 cells - max 10,0A
Cutoff v oltage/cel l 1,8-2,3V 0,1V
Limits of discharge current
Limits of discharge current
Limits of discharge current
Limits of discharge current
Operating buttons
Charger – general description
Cooling Section
Power Input
LCD Display
Operating buttons
Cooling fan
Power output &
temperature sensor
For best connect ability and safe operations the
temperature sensor is equipped with a strong magnet and
therefore can be easily attached to most kind of common
hobby batteries.
The power input cord is equipped with 4mm connectors for
using a power supply. Crocodile style connectors are also
included. They are directly compatible with the 4mm power
input cord connectors. This way you can easily use your
Overloader2 with various input power sources (power supply,
12V car battery,…). PLEASE NOTE: it is very important that
you connect the black input cord with the minus pole (-) and
the red input cord with the plus pole (+) of your power source.
6
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
Serial PC connection
Menu - abstract
Charge
- starts charging the battery
- Only one screen for all charge modes
Discharge
- starts discharging the battery
- all information without scrolling
Profiles
- settings of the batteries
- 10 x 4 battery types (NiCd/NiMh, LiPo, Lixx, Pb)
- Cycle- and 4-step settings
Motor break-in
- Break-in electric motors
- operate commutator lathes
- can be disabled
Tire warmers
- temperature controlled operation of
tire warmers
- can be disabled
User setup
- all settings of the device
- name, language, sounds, LCD display, menus...
Nitro glow-plug
- operation of glow plugs for nitro engines
- can be disabled
Data view
- information of the last charge, discharge,
or cycle procedure
- view the graph
7
MODE/
CANCEL
MODE/
CANCEL
MODE/
CANCEL
MODE/
CANCEL
MODE/
CANCEL
MODE/
CANCEL
MODE/
CANCEL
MODE/
CANCEL
Charge
Charge in idle mode
you are here, if you have just switched
to charge menu.
- Use and to select a suitable
profile (0-9) for your battery.
- The keys and changes the
charge current with steps of 0.1A.
- The button starts charging.
- Use the button to switch to
discharge menu.
profilenumber
battery type
charge mode
est. charge
time
profilename
charge
current set
capacity
added
temperature
of battery
voltage of batt.
charge time
deltaPeak/
charge end
voltage
cells/
nom.capacity
charge
current act.
voltage of batt.
voltage
resolution
charge time
scroll mode
time
resolution
Charge in action
The battery symbol is animated and the
actual charge current is shown.
- While charging and do not
have any function.
- and keep on changing the
charge current.
- The key switches to the
charge graph view.
- Press and hold the button to
cancel charging.
Charge graph
shows the battery voltage against the
charge time
- Use and to zoom.
The number of seconds, one point
represents (s/p) is changed.
While changing the value is inverted.
Note that voltage resolution is auto matically set. The range of the
voltage-axis is shown in Volt.
- , and do not
have any function at the charge graph.
- Use to leave the charge graph.
peaklock
symbol
8
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
ENTER /
START
MODE /
CANCEL
ENTER /
START
MODE /
CANCEL
Discharge
Discharge in idle mode
you are here, if you have just switched
to discharge menu.
- Use and to select a suitable
profile (0-9) for your battery.
- The keys and changes the
discharge current with steps of 0.1A.
- The button starts discharging.
- Use the button to switch to
the profile settings.
profilenumber
battery type
average
voltage
est. discharge
time
profilename
discharge
current set
capacity
removed
temperature
of battery
voltage of batt.
discharge time
cutoffvoltage
cells/
nom. capacity
discharge
current act.
voltage of batt.
voltage
resolution
discharge time
scroll mode
time
resolution
Discharge in action
The battery symbol is animated and the
actual discharge current is shown.
- While discharging and do not
have any function.
- and keep on changing the
discharge current.
- The key switches to the
discharge graph view.
- Press and hold the button to
cancel discharging.
Discharge graph
shows the battery voltage against the
charge time
- Use and to zoom.
The number of seconds, one point
represents (s/p) is changed.
While changing the value is inverted.
Note that voltage resolution is auto matically set. The range of the
voltage-axis is shown in Volt.
- , and do not
have any function at the charge graph.
- Use to leave the charge graph.
battery
resistance
average
voltage
9
ENTER /
START
MODE /
CANCEL
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
ENTER /
START
MODE /
CANCEL
Profiles
Profiles - general
stores all your battery settings.
Therea are 4 x 10 profiles available, which
means for each profilenumber you can choose
from 4 batterytypes. Each batterytype stores its
own settings.
Note, for each profilenumber only one batterytype
can be activated simultaneously.
- Use and to select the setting
you would like to change.
Note, there are dependencies between
settings, so it is possible that some
settings are not shown.
- With , the value of the highlighted
setting can be changed between its upper and
its lower limit.
Use press and hold to change the value more
quickly.
- Usually the key has no function.
Except profilename and chargemode 4-step.
- Depending on your settings switches
to motor break-in, nitro glow-plug, tire
warmers or data view menu.
10
setting
value
cursor
scrollbar
DOWN
ENTER /
START
_
MODE /
CANCEL
+
UP
DOWN
UP
DOWN
ENTER /
START
MODE /
CANCEL
UP
DOWN
UP
DOWN
ENTER /
START
MODE /
CANCEL
UP
DOWN
UP
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