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4S

5S

2S

3S

Dear Customer,
thank you for your trust in this LRP product. By purchasing a LRP QUADRA-PRO 2 Professional Battery Managment System, 

you have chosen a high-performance product which has the latest technology incorporated including the following High-Tech 

features:

• NiMH - NiCd - LiPo - LiFePo Charging & Discharging 

• Integrated Balancer for 2S-5S

• Dual Input (100- 12Vdc)  

• Blue backlit 16x2 LCD 

• Cycle Mode 

 • 3 User Profile Memories

• 25-Year Warranty 

• Multi-Protection-System

Please read the following instructions carefully before you start using your charger. This user guide contains important 

notes for the installation, the safety, the use and the maintenance of this product. Thus protecting yourself and avoid 

damages of the product.

Proceed according to the user guide in order to understand your charger better. Please take your time as you will have much 

more joy with your product if you know it exactly.

This user manual shall be kept in a safe place. If another customer is using this product, this manual has to be handed out 

together with it.

100-240V AC / 12V DC

ChArge-DisChArge-CyCle

1-14 Cells nimh/niCD

1-5 Cells lipo/liFepo

LA00045

user guiDe - #41281

LRP electronic GmbH 

Wilhelm-Enssle-Str. 132-134

73630 Remshalden, Germany

[email protected]      www.LRP.cc

© lrp electronic gmbh 2009

teChniCAl DAtA

Dimensions

[mm]

145x160x60

Integrated Balancer

yes, 2S - 5S

Weight

[g]

600

Autostart Timer

yes

Input Voltage

[AC]

100-240V

Partial Charge Mode

yes

[DC]

11-15V

Cycle Mode

yes

Charging Mode

Linear

User Profile Memory

3

Charging Capability

LiPo/LiFePo

1-5 cells

LCD

16x2, blue backlit

NiMH/NiCd

1-14 cells

Acoustic Signal Type

Buzzer

Charge Current

[A]

0.1 - 5.0

Buttons

4

Trickle Current

[A]

0 -0.25

Advanced Digital

yes

Delta Peak

[mV]

5 - 200

Multi-Protection-System

yes

Discharge Current

[A]

0.1 -1.0

DC Input Connection

Alligator Clamps

Discharge 

Cut-Off Voltage

LiPo/LiFePo

2.5 - 14.0V

AC Input Connection

AC connector

NiMH/NiCd

0.9- 16.0V

Output Connection

4.0mm jacket

Specifications subject to change without notice.

SET  Battery  Type: 

The  QUADRA-PRO  2  can  charge  4  different  cell  types  and  incorporates  the  designated  charge 

algorithms for each particular cell type for best performance, reliability and safety.

NiMH/NiCd 

 charging with constant c delta-peak detection. This is the most popular charging method for 

NiMH/NiCd-batteries in competition.

LiPo/LiFePo 

 charging using the CC/CV-charging method.

 With this charging method, the battery gets charged with 

a constant current first. As soon as the battery voltage reaches the max. charging voltage of the LiPo- (4.2V/

cell) or LiFePo- (3.7V/cell) battery, the charger automatically reduces the charging current till the battery is 

fully charged.

Caution:

 Always choose the correct BATTERY TYPE setting for the battery you want to charge, as wrong setting may result 

in damage to the battery, fire or explosion!

SET Charge Current:

 The charge current can be set from 0.1 to 5.0A. If not otherwise specified by the battery manuf

-

acturer, choose 0.5C charge rate which is always a safe value!

SET Charge Delta Peak: 

With NiMH/NiCd-batteries, you only obtain the optimum battery performance by slightly 

„overcharging“ the battery. In real terms, it will not be overcharged, but charged to an optimum level. The battery voltage 

drops at the end of the charging process (delta). The size of the drop (delta peak) is adjustable in the range between 5 - 200mV. 

The higher the value, the hotter the battery will be at the end of the charge. We recommend to start with the works-default 

settings.

Note

The adjustable Delta-Peak value applies to the whole battery pack and not to one single cell!

SET Charge Trickle: 

This current, which flows after delta peak cutoff, is adjustable from 0.0A to 0.25A to achieve the 

highest possible voltage for NiCd cells. Set this function to „Off“ for NiMH cells.

Cell#

LiPo

LiFePo

1 (1S)

3.7V

3.3V

2 (2S)

7.4V

6.6V

3 (3S)

11.1V

9.9V

4 (4S)

14.8V

13.2V

5 (5S)

18.5V

16.5V

ChArge

SET Charge LiPo/LiFePo Volt (pack voltage): 

The packs rated vol-

tage for LiPo- and LiFePo-batteries must be set according to the packs number of 

cells. See right table.

* C=Nominal capacity of the battery. E.g. with a nominal capacity of 3300mAh (3.3Ah), 

the battery can be charged with a max. current of 3.3A:

DisChArge

The adjustable discharge circuit (0.1 to 1.0A) can be used for 1-14 cell NiMH/NiCd-packs and 1-5 cell LiPo/LiFePo-packs. 

The QUADRA-PRO 2 informs you about all the data relating to the battery pack, e.g. discharge time, capacity and average 

voltage.

By discharging your battery pack on the QUADRA-PRO 2 after use, you obtain vital information about remaining capacity for 

optimizing your motor or gear ratio for the next run. This also maintains your battery packs in good condition.

SET Discharge Current: 

The discharge current can be set from 0.1 - 1.0A.

SET Discharge Voltage: 

The cut-off voltage can be adjusted from 0.9 - 14.0V depending on the number of cells. We 

recommend a cut-off voltage of 0.9V/cell with NiMH/NiCd-, 3.0V/cell with LiPo-and 2.6V/cell with LiFePo-batteries. 
This means for example: - 5.4V for 6-cell NiMH/NiCd - 6.0V for a 2-cell LiPo - 5.2V. for a 2-cell LiFePo

This fully automatic cycling/matching function allows you to determine the actual performance of your packs before using 

them. Battery packs change during their life span. Use the QUADRA-PRO 2 to detect the actual quality of your packs. This 

prevents nasty surprises.
The “Cycle” mode uses the charge and discharge values of the currently selected programm, stored under “Settings”. The 

pack is first discharged, then charged and finally discharged. At the end of the process, the pack capacity and the average 

discharge voltage are displayed.

There is a short delay in the timer during cycle operation, in order not to overheat the batteries, which is as following:

  - Initial Discharge -> Charge: 1min (if discharge was finished within 10min), otherwise 5min

  - Charge -> Discharge: 1min (if charge was finished within 10min), otherwise 5min

Note:

 The „Cycle“ function can of course be used for all types of cells (NiMH-NiCd-LiPo-LiFePo).

CyCle

ConneCtions / operAtion

The QUADRA-PRO 2 was developed with the main objective placed on easy operation of all features. Intuitive navigation 

by means of 4 buttons makes it very easy to use and the 2-line blue backlit LC display offers perfect, reliable control of all 

settings and functions.

OUTPUT  JACKET:

  connect  battery  to  be 

charged  to  the  4.0mm  jacket,  using  supplied 

charge wires.

Caution: 

Be careful with correct polarity!

BUTTONS:

MENU 

Scrolls/jumps through the function list.

DEC - 

Decrements the underscored value.*

INC +

 

Increments the underscored value.*

START/STOP

 

Next program step / Start a program / Cancel a running program.

* Button has high-speed function for rapid setting (hold down button to change value faster).

BALANCER  CONNECTOR:  high-

performance  integrated  LiPo/LiFePo 

balancer for 2S to 5S packs using EHR 

balancing connector.

NiMH 5.0A    00m35s
08.58V      0048mAh

16x2 LCD SCREEN:

Active function

Time elapsed since start

Current

Capacity

Voltage at output connectors

DC INPUT: 

connect to a suitable DC source with 11-

15V, using the supplied connection wire.

Caution:

 Be careful with correct polarity!

- Red = Plus   /  Black = Minus

AC INPUT:

 connect to main power with 100-240VAC

Caution:

 Do not alter the wire or connector as this will 

void your warranty!

P2 (NiCd), P3 (LiPo 2-cell). For details see the table below.

The active profile P1, P2 or P3 is displayed in the main menu. By 

pressing the INC+ and DEC- buttons you can change between the 

profiles and their settings.

To reset to default settings, proceed as following:

•  Disconnect input voltage.
•  Hold down MENU button while reconnecting the input voltage.

The QUADRA-PRO 2 allows you to save 3 individual user profiles. This means you can customize 3 personal charge profiles in

-

dividually and store them for later use. The QUADRA-PRO 2 has 3 preset works-default settings when shipped out: P1 (NiMH), 

settings

User Profile

P1

P2

P3

Battery Type

NiMH

NiCd

LiPo

Charge Current

4.0A

3.0A

3.0A

Charge D-Peak

20mV

50mV

--

Charge Trickle

0ff

Off

--

Charge LiPo Volt

--

--

7.4V

Discharge Current

1.0A

1.0A

1.0A

Discharge Voltage

5.4V

5.4V

6.0V

The QUADRA-PRO 2 contains an integrated high-performance balancer for 2S to 5S LiPo- and LiFePo-packs using EHR balan

-

cing connector. Please refer to drawing (also like that on charger) for correct polarity, basically minus (black wire) is always 

bAlAnCing FunCtion

Always follow the cell manufacturers charge-/usage-recommendations, never use batteries outside their specifications!

Battery Type

Voltage / 

Cells

Battery 

Type

Charge 

Current

D-Peak Trickle

LiPo

Volt

Dischg. 

Current

Dischg. 

Volt

NiCd Sportpacks (1600-2400mAh)

7.2V / 6

NiCd

3.0A

95mV

0.1A

--

1.0A

5.4V

NiMH Sportpacks (3000-4200mAh)

7.2V / 6

NiMH

3.0A

20mV

OFF

--

1.0A

5.4V

NiMH Sportpacks (3000-4200mAh)

12.0V / 10

NiMH

3.0A

30mV

OFF

--

1.0A

9.0V

NiMH Sportpacks (3000-4200mAh)

14.4V / 14

NiMH

3.0A

50mV

OFF

--

1.0A

12.6V

NiMH Competition Cells

4.8V / 4

NiMH

5.0A

5mV

OFF

--

1.0A

3.6V

NiMH Competition Cells

6.0V / 5

NiMH

5.0A

10mV

OFF

--

1.0A

4.5V

NiMH Competition Cells

7.2V / 6

NiMH

5.0A

15mV

OFF

--

1.0A

5.4V

NiMH Competition Cells

12.0V / 10

NiMH

5.0A

25mV

OFF

--

1.0A

9.0V

NiMH Competition Cells

14.4V / 14

NiMH

5.0A

35mV

OFF

--

1.0A

12.6V

AA/Mignon NiMH Cells (2000-2700mAh)

9.6V / 8

NiMH

0.5A

30mV

OFF

--

0.3A

7.2V

2/3A NiMH Cells (1200-1600mAh)

6.0V / 5

NiMH

1.0A

15mV

OFF

--

0.8A

4.5V

LiPo Pack Air ~480mAh (plane/helicopter)

11.1V / 3S

LiPo

0.5A

--

--

11.1V

0.5A

9.0V

LiPo Pack Air ~1500mAh (plane/helicopter)

11.1V / 3S

LiPo

1.5A

--

--

11.1V

1.0A

9.0V

LiPo Pack Air ~3000mAh (plane/helicopter)

11.1V / 3S

LiPo

3.0A

--

--

11.1V

1.0A

9.0V

LiPo Pack Car ~1800mAh (Micro 1/18)

7.4V / 2S

LiPo

1.8A

--

--

7.4V

1.0A

6.0V

LiPo Pack Car ~5000mAh (1/10)

7.4V / 2S

LiPo

5.0A

--

--

7.4V

1.0A

6.0V

LiPo Pack „TX Only“ ~2700mAh

11.1V / 3S

LiPo

1.5A

--

--

11.1V

0.5A

9.0V

LiPo Pack „RX Only“ ~1800mAh

7.4V / 2S

LiPo

1.2A

--

--

7.4V

0.5A

6.0V

LiFePo Pack „RX Only“ ~1800mAh

6.6V / 2S

LiFePo

1.2A

--

--

6.6V

0.5A

5.2V

LiFePo Pack Car ~4500mAh

6.6V / 2S

LiFePo

4.5A

--

--

6.6V

1.0A

5.2V

reCommenDeD settings

The crossed-out wheeled bin means that within the European Union the product must be taken to seperate 

collection at the product end-of-life. Do not dispose of these products as unsorted municipal waste.

on the far right side of the plug as shown on drawing.

The balancer equalises the cells, during charge- and balance-function, which 

results in higher performance and higher cycle-life.

Caution:

 Avoid incorrect connection as in the worst case this may result in 

damage to the battery and/or charger!

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