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Version  Comments
1.0  Pre-release Manual for Smart Balance Charger
2.0  New Manual for Smart Balance Charger
2.1  Added Charging connection Controller Battery 

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5. Operation Instructions

START

2

 

Seconds

1. Standby

After the charger is powered on, it will enter standby mode. 
Connect the battery and the balance port. The charger will 
automatically detect the connected battery type.

LIPO BAL-CHG 2S 

10S           

2A

2. Charging Current selection

After entering the main interface, you can press the “INC” and 
“DEC”  buttons to set the charging current value. Check that the 
selected current does not exceed the battery specifications. 
Then press the “START” button to confirm the set value. 

If there is no action in 10 seconds the program will 
automatically recommend a charging current according to the 
number of cells and capacity.  The 10 second countdown will be 
displayed in the lower left corner of the current setting 
interface. The settings buttons will reset the countdown timer.

3. Start charging

Press and hold the "START" button for 2 seconds to start the 
charging program. When in charging mode, the “INC”, “DEC” and 
“ENT” buttons are not available. Press the “ESC” to stop charging.

LIPO BAL-CHG 2S 

10S           

1A

LI2s   7a   8.4v

bal 005.47 00121 

This charger can only charge LiPo-2S or  

LiHV-4S

 batteries.  

DO NOT CHARGE ANY OTHER BATTERY TYPE AND NEVER LEAVE A 
CHARGING BATTERY UNATTENDED.

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6. Interface Description 

Error messages:

CONNECT BREAK!

CELLS IMBALANCE!

OVERHEATING!

OVER CAPACITY!

POLARITY REVERSE

HIGH VOLTAGE!

HIGH CELL VOLT!

SHORT CIRCUIT!

POWER SUP FAULT!

SELF TEST FAULT!

CELLS ERROR!

SAFETY TIMER!

SETTINGS CHANGED

When the charger is used incorrectly or there is a fault, the charger will 

prompt an error message for the user to view. As shown below:

type of battery

Balanced charging mode

Charging voltage
Charged capacity

LI2s   7a   8.4v

bal 005.47 00121 

Charging current

 Charging time

The battery has been disconnected from the charger.

The cells of the battery are unbalanced. The battery cannot be 
charged.

The charger has overheated. Power off the charger and allow it 
to cool.

The connected battery cannot be charged.

The battery has been incorrectly connected. Check all 
connections.
The input voltage is too high. The battery cannot be charged.

The battery voltage is too high. The battery cannot be charged

.

The connected battery has an incompatible number of cells.

The connected battery has not charged in a safe time.

The selected setting has been changed successfully.

The charger output has been short-circuited.

The input supply is unacceptable.

The charger`s self-test has failed. The charger cannot be used.

7. Specifications

130*115*61mm
380g

2-10A
5W
LiPo-2S

LiHV-4S

AC input 100-240V DC output 11V-18V

Input
Output Power
Battery types
Charging Current
Discharge power
Battery Numbers
Balance Current
Input Protection
Output Protection

Working Temperature
Size
Weight

LiPo

LiHV

400mA/cell
Overcurrent

Overvoltage, undervoltage, short circuit, overheating, 

short circuit, reverse connection 

5-45

100W

Note:  The product specifications mentioned in this manual are for 
reference only. This manual is correct at the time of release, and is subject 
to change without notice. 

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8. After-sales and Warranty

9.Warning

10.Version Information

Thank you for purchasing this SwellPro product, we will do our best to 
provide you with comprehensive after-sales service to fully protect your 
rights. If your product is at fault, please contact SwellPro after-sales staff.
1. The product is covered by a 12-month warranty.
2. Warranty repairs are free of charge for one year from the date of 
purchase.If the customer is unable to provide valid proof of purchase, the 
date will be based on the internal date code of the charger.
3. For repairs after the first 12 months of use, the cost will be charged as 
appropriate, and the customer shall bear the round-trip shipping costs.

1. Product damage caused by failure to use a suitable input voltage as required. 
2. Damage caused by not following the instructions.
3. Any man-made, accidental impact or other force majeure that causes damage 
to the product.
4. Modification, disassembly or modification of the internal circuit of this product 
without the approval of the company.
5. Water immersion or intrusion, moisture or other foreign matter entering the 
product and causing damage.
6. Aging, bumps and scratches on the surface of the product.

The product specifications and information mentioned in this 
manual are for reference only and are subject to change without 
notice.

Warranty does not cover damage due to neglect or incorrect usage of the 

charger including:

The user is responsible for any consequences caused by the operation of 
the charger.  SwellPro is not liable for the costs beyond the cost of the 
product and reserves the right to modify the terms of this warranty which 
is subject to change without notice.

 1. This product is not intended for use by persons with physical, sensory or 

mental disabilities or lack of experience and relevant knowledge (especially 
children).

 2. This product is not a toy. Please keep away from children.

 3. If the product is in any way damaged, turn off the power to avoid the risk 

of electric shock.

 4. This product is for indoor use only.

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