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4. Connection instructions

AC input connection 

Connector

Drone Battery

Red

Red

2. Connect either a LiPo-2S battery or LiHV-4S (HIGH VOLTAGE). 

NEVER CHARGE A LIPO-4S BATTERY WITH THIS CHARGER AS THE HIGH 
VOLTAGE WILL DAMAGE THE BATTERY AND CAN BE A FIRE RISK.

1. Before charging, check that the terminals and wires of the battery pack are 
not damaged.
2. When connecting the battery, always check that the positive (red) and 
negative (black) wires are connected correctly and the connector plugs are 
connected to the same coloured ports on the charger.
3. In order to avoid short circuits, connect the banana connector cable to the 
charger first, then connect the battery. When disconnecting, disconnect the 
battery first, then disconnect the  charger.
4. Only one battery can be charged at a time.

Connector

Controller Battery

LiHV-4S Battery 

Charging Port

Charging port of the cable

LiPO-2S 

Battery 

Charging 

Port

Charging port 
of the cable

Black

Black

User Manual 

V2.1

Model: C1 - XR

AC/DC Smart Balance Charger

www.swellpro.com

WARNING:
The SplashDrone 3+ utilizes high voltage LiHV battery technology in the 
drone battery. 
The battery charger supplied with the SplashDrone 3+ is only suitable for 
charging SwellPro LiHV batteries and the LiPo batteries for the Splash-
Drone 3+ remote controller.

Charging non-LiHV, low voltage LiPo drone batteries (including the 
batteries for the older SplashDrone 3) with the LiHV charger is dangerous 
and may cause the battery to catch fre or explode.

1

2. Important Precautions 

1. Foreword

Thank you for purchasing this SwellPro product, please read the entire contents of 
this manual thoroughly, to comprehensively familiarize yourself with the product 
before using it.  
The safety precautions in this manual are only intended to supplement local 
safety regulations.

Lithium batteries store a large amount of energy.  Care 
must be taken to ensure that batteries and chargers are in 
good order and are compatible. 

1. Do not use this product in direct sunlight, rainy or moist environments.
2. This product should be kept away from dangerous materials such as heat 
source, high pressure, water, flammable gas and corrosive agents. Operate the 
charger in a suitable environment 5 °C ~ 45 °C.
3. The product should be placed on a horizontal surface. Ensure the charger has 
sufficient ventilation(recommended >50cm).  
4. Do not cover the product or battery during operation. Do not place the 
battery on top of the charger.
5. Do not charge non-rechargeable lithium batteries or incompatible batteries.
6. During operation, the charger and battery should be placed on a strong 
anti-flammable and non-conductive surface. Do not charge batteries on a car 
seat, carpet or other similar surfaces. 
7. Only charge compatible batteries. Charging incompatible batteries is a fire risk.
8. Do not charge or discharge a battery that has been physically damaged.
9. Do not disconnect the input line during charging. After charging has 
completed, disconnect the battery and then the input line.
10. Keep the charger clean and dry.
11. Do not modify or disassemble this product.
12. Avoid using this product during thunderstorms.
13. Do not allow children under the age of 14 to use the charger.
14. Do not short-circuit or disassemble a battery. 
15. NEVER LEAVE A LITHIUM BATTERY UNATTENDED DURING CHARGING OR 
DISCHARGING.
16. In the event of fire, disconnect the charger and use a dry powder fire 
extinguisher to fight the fire. 

2

3.Charger 

1

7

2 3 4

5

6

8

9

WARNING:
The SplashDrone 3+ utilizes high voltage LiHV battery technology in 
the drone battery. 
The battery charger supplied with the SplashDrone 3+ is only suitable 
for charging SwellPro LiHV batteries and the LiPo batteries for the 
SplashDrone 3+ remote controller.

Charging non LiHV, low voltage LiPo drone batteries (including the 
batteries for the older SplashDrone 3) with the LiHV charger  is 
dangerous and may cause the battery to catch fire or explode.

3

1. The charger can be connected to an AC outlet (100~240V AC) or to a suitable 
high-current DC source 11~18V such as a car charging port or cigarette lighter 
adapter.

Please check www.swellpro.com for the 
latest version of this manual.

1. Mode Switch
2. Decrease
3. Increase

7. LCD Screen
8. AC Input
9. DC Input (for connection to a car 
charging port)

4. Start/Confirm
5. Main Output 
6. Balance Interface

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