BiXPower 12.6V 1.5A Lithium-Ion Battery AC Charger for 10.8V / 11.1V Batteries
Compact 3S lithium-ion battery charger with center-positive 4.0 x 1.7mm connector, red/green LED charging indicator, and optional interchangeable DC connector tips.
The BiXPower ACC-12V2AC25 is an AC battery charger designed to recharge compatible 10.8V and 11.1V nominal lithium-ion battery packs with three cells connected in series (3S).
This charger provides a maximum charging voltage of 12.6V DC and a rated charging current of 1.5A. It is suitable for compatible 3S lithium-ion batteries, including certain 3S2P, 3S3P, and 3S4P battery configurations.
The standard output connector is a 4.0 x 1.7mm male DC barrel plug with center-positive polarity. Optional BiXPower G-series connector tips allow the plug size to be changed for batteries using other compatible charging connectors.
Important: Dedicated Lithium-Ion Battery Charger
This is a lithium-ion battery charger, not a general-purpose 12V DC power adapter. Use only with compatible rechargeable 3S lithium-ion batteries designed for a maximum charging voltage of 12.6V and a charging current of 1.5A.
Key Features and Benefits
- Designed for 3S Lithium-Ion Batteries: Charges compatible 10.8V / 11.1V nominal lithium-ion packs.
- 12.6V Charging Voltage: Maximum charging voltage appropriate for standard 3S lithium-ion cells rated for 4.2V per cell.
- 1.5A Charging Current: Suitable for batteries that accept 1.5A charging.
- Center-Positive Connector: Standard 4.0 x 1.7mm male DC barrel plug with positive center contact.
- Interchangeable Connector Options: Compatible with optional BiXPower G-series tips for additional connector sizes.
- Red/Green LED Indicator: Convenient visual indication of charging activity.
- Universal AC Input: Supports 100V–240V AC, 50/60Hz.
- Compact Design: Approximately 118 x 58 x 35mm.
- Portable: Weighs approximately 8 oz (230g).
- Detachable AC Power Cord: Convenient for connecting to AC wall power.
Designed for 10.8V and 11.1V Lithium-Ion Battery Packs
A standard rechargeable lithium-ion cell typically has a nominal voltage of 3.6V or 3.7V and a maximum charging voltage of 4.2V.
A battery pack with three cells connected in series is known as a 3S lithium-ion battery. Its nominal voltage is approximately 10.8V or 11.1V, while its maximum fully charged voltage is 12.6V.
3S Lithium-Ion Battery Charging
- Nominal battery voltage: 10.8V / 11.1V
- Cells connected in series: 3
- Maximum voltage per cell: 4.2V
- Maximum battery charging voltage: 12.6V
- Charger output current: 1.5A
This charger may be used with compatible 3S2P, 3S3P, and 3S4P lithium-ion packs, provided the battery is rated for 1.5A charging and has a matching charging connector, polarity, and battery protection system.
It is also suitable for compatible BiXPower iP100 battery models that accept this charging specification.
Standard 4.0 x 1.7mm Center-Positive DC Connector
The charger includes a standard male DC barrel connector with the following specifications:
- Outer Diameter (OD): 4.0mm
- Inner Diameter (ID): 1.7mm
- Polarity: Center Positive (+), Outer Negative (-)
- Maximum Charging Voltage: 12.6V DC
- Charging Current: 1.5A
Optional Interchangeable Connector Tips
One advantage of the BiXPower ACC-12V2AC25 charger is its compatibility with optional BiXPower G-Series DC connector tips.
These connector tips plug onto the charger's standard 4.0 x 1.7mm male output connector, allowing the charger to connect to batteries with other compatible DC charging-port sizes.
G4 and G10 connector tips are optional accessories and are sold separately.
G4 Connector Tip – 5.5 x 2.5mm
The BiXPower G4 Connector Tip converts the charger's standard 4.0 x 1.7mm male output plug into a 5.5 x 2.5mm male connector.
This provides an additional connection option for compatible 12.6V lithium-ion battery packs with 5.5 x 2.5mm charging inputs.
G10 Connector Tip – 5.5 x 2.1mm with Center Pin
The BiXPower G10 Connector Tip converts the standard 4.0 x 1.7mm output plug to a 5.5 x 2.1mm male connector.
Before ordering, verify that the battery charging jack is compatible with the G10 connector's center-pin configuration.
Connector Compatibility Notice
Changing the connector tip does not change the charger's electrical output. The charger still provides a maximum charging voltage of 12.6V DC at 1.5A.
Always confirm the battery's charging voltage, allowed charging current, connector dimensions, connector polarity, and battery management system compatibility before connecting the charger.
Red / Green LED Charging Indicator
The charger has a built-in LED indicator to help monitor charging status.
| LED Color |
Charging Status |
| Red |
Output current is greater than 300mA, indicating active charging. |
| Green |
Output current is 300mA or less, generally indicating that the battery is near or at the end of charging. |
A green indicator may also appear when no battery is connected or when the battery is not accepting charging current. The LED should not be treated as an exact battery-capacity measurement.
Technical Specifications
| Product Model |
ACC-12V2AC25 |
| Product Type |
AC Lithium-Ion Battery Charger |
| Battery Chemistry |
Rechargeable Lithium-Ion (3S) |
| Nominal Battery Voltage |
10.8V / 11.1V |
| AC Input |
100V–240V AC, 50/60Hz |
| Maximum Charging Voltage |
12.6V DC |
| Rated Charging Current |
1.5A |
| Maximum Rated Output Power |
18.9W |
| Standard Output Connector |
4.0 x 1.7mm Male DC Plug |
| Output Polarity |
Center Positive (+), Outer Negative (-) |
| Optional Connector Tips |
G4 (5.5 x 2.5mm), G10 (5.5 x 2.1mm with Center Pin) |
| LED Charging Indicator |
Red / Green |
| LED Current Threshold |
300mA |
| Dimensions |
118 x 58 x 35mm (4.6 x 2.3 x 1.4 inches) |
| Weight |
8 oz (Approx. 230g) |
| AC Connection |
Detachable AC Power Cord |
| Compatible BiXPower Battery |
Compatible iP100 Battery Models |
How to Charge Your Lithium-Ion Battery
- Verify Battery Compatibility: Confirm that the battery is a compatible 3S lithium-ion pack requiring 12.6V charging and accepting 1.5A current.
- Select the Correct Connector: Use the standard 4.0 x 1.7mm connector or an appropriate optional G-series tip, after confirming connector polarity and compatibility.
- Connect the Battery: Insert the charging connector into the battery's designated charging port.
- Connect AC Power: Connect the AC power cord and plug the charger into a suitable wall outlet.
- Observe Charging: The LED normally turns red during active charging and green when charging current falls to 300mA or less.
- Disconnect After Charging: Follow the battery manufacturer's charging and disconnection instructions.
Important Safety Information
- Use only with compatible rechargeable 3S lithium-ion battery packs.
- Do not use with lead-acid, NiMH, or LiFePO4 batteries.
- Verify the battery's required charging voltage and allowable charging current.
- Confirm correct connector polarity before connecting.
- Do not use with damaged, swollen, overheated, or defective batteries.
- Keep the charger dry and adequately ventilated.
- Use with battery packs equipped with suitable protection circuitry.
- Follow the battery manufacturer's charging instructions.
Frequently Asked Questions
Is this a lithium-ion battery charger or a regular power adapter?
This is a dedicated lithium-ion battery charger for compatible 3S battery packs. It is not intended as a general-purpose 12V DC power supply.
Why is the charging voltage 12.6V when my battery is rated 11.1V?
11.1V is the nominal voltage of a typical 3S lithium-ion battery. Its maximum fully charged voltage is 12.6V.
What is the charging current?
This model is rated for 1.5A charging current, with a maximum rated output power of 18.9W.
What is the standard connector size?
The charger has a 4.0 x 1.7mm male DC barrel connector with center-positive polarity.
Can I change the connector to 5.5 x 2.5mm?
Yes. Use the optional BiXPower G4 connector tip, provided the battery's charging connector and electrical specifications are compatible.
Can I change the connector to 5.5 x 2.1mm?
The optional BiXPower G10 connector tip provides a 5.5 x 2.1mm male connector. Confirm the exact connector geometry before use.
Do connector tips change the charging voltage?
No. Connector tips change the physical connector size, not the charging voltage or current rating.
What do the red and green LED indicators mean?
Red indicates output current above 300mA. Green indicates output current of 300mA or less, which commonly occurs near charging completion or when no battery is connected.
Can this charger be used internationally?
The charger accepts 100V–240V AC input at 50/60Hz. A suitable AC power cord or plug adapter may be required outside the United States.
Can it charge a 3S2P, 3S3P, or 3S4P battery?
Yes, provided the battery is designed for 12.6V charging at 1.5A and has compatible connector polarity and protection circuitry.
Package Contents
- 1 x BiXPower ACC-12V2AC25 12.6V 1.5A Lithium-Ion Battery Charger
- 1 x AC Power Cord
Optional G-series connector tips and lithium-ion batteries are sold separately.
Convenient 12.6V Charging with Flexible Connector Options
The BiXPower ACC-12V2AC25 is a compact lithium-ion battery charger for compatible 10.8V / 11.1V nominal 3S battery packs. With 12.6V charging output, 1.5A current, center-positive 4.0 x 1.7mm connector, red/green LED indicator, and optional interchangeable G-series connector tips, it offers a practical charging solution for a variety of compatible rechargeable lithium-ion batteries.
