16.8V 1.8A AC Lithium-Ion Battery Charger with 5.5 x 2.5mm Barrel Connector
Compact, convenient charging for compatible 14.4V and 14.8V rechargeable lithium-ion battery packs.
The BiXPower ACC-16V2A Portable AC Battery Charger
is designed to charge compatible 14.4V / 14.8V nominal lithium-ion
battery packs that use a standard
5.5mm outer diameter x 2.5mm inner diameter
center-positive DC charging connector.
With a maximum charging voltage of 16.8V DC,
a maximum charging current of 1.8A,
and worldwide 100-240V AC input,
this compact charger provides a convenient charging solution
for compatible portable lithium-ion batteries.
Unlike chargers with specialized V-Mount or D-Tap connectors,
the ACC-16V2A uses a common DC barrel connector,
making it suitable for a broader range of compatible
lithium-ion battery packs that support charging through
a 5.5 x 2.5mm DC input.
BiXPower ACC-16V2A Portable AC Lithium-Ion Battery Charger
Key Features & Benefits
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Designed for 14.4V / 14.8V Lithium-Ion Batteries:
Compatible with supported 4S lithium-ion battery packs.
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16.8V Charging Voltage:
Provides the full-charge voltage required by standard
4-cell-series lithium-ion batteries.
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1.8A Maximum Charging Current:
Controlled charging current for compatible rechargeable battery packs.
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5.5 x 2.5mm DC Barrel Connector:
Common connector format used by many portable battery systems.
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Center-Positive Polarity:
Suitable for batteries with matching DC charging polarity.
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Worldwide AC Input:
Supports 100-240V AC, 50/60Hz.
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LED Charging Status:
Red indicates charging; green indicates charging complete
under normal charging conditions.
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Compact Portable Design:
Easy to carry, store, and use as a replacement or backup charger.
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One-Year Warranty:
Backed by BiXPower's limited product warranty.
Versatile Charging for Compatible Lithium-Ion Battery Packs
Many rechargeable lithium-ion battery packs use a
5.5 x 2.5mm DC barrel connector for charging.
The ACC-16V2A is an excellent choice when a battery requires
a dedicated 16.8V lithium-ion charger
and accepts charging through a compatible
5.5 x 2.5mm center-positive input connector.
Potential applications include:
- Portable 14.4V / 14.8V lithium-ion battery packs
- Compatible external rechargeable battery packs
- Portable electronic equipment battery systems
- Rechargeable batteries used with professional video accessories
- Compatible portable lighting battery packs
- Specialized industrial or field equipment battery packs
- Replacement charging for compatible 4S lithium-ion batteries
- Additional or backup battery charging equipment
These are potential applications only. Compatibility depends on
the specific battery's chemistry, cell configuration, charging voltage,
permitted charging current, connector dimensions, and polarity.
5.5 x 2.5mm Center-Positive DC Barrel Connector
The charger features a male DC barrel connector with:
- Outer Diameter: 5.5mm
- Inner Diameter: 2.5mm
- Connector Length: Approximately 12mm
- Polarity: Center Positive
5.5mm OD x 2.5mm ID DC Barrel Connector — Center Positive
Important Connector Compatibility Notice
A 5.5 x 2.5mm barrel connector is different from a
5.5 x 2.1mm barrel connector. They may look similar,
but are not interchangeable in all applications.
Before purchasing, verify the exact connector size and polarity
required by your battery. Also confirm that the battery is designed
to accept 16.8V lithium-ion charging at up to 1.8A.
Proper Charging for 4S Lithium-Ion Batteries
The ACC-16V2A is intended for compatible lithium-ion battery packs
containing four cells connected in series, commonly described as
4S.
Typical battery configurations include:
- 4S1P lithium-ion battery packs
- 4S2P lithium-ion battery packs
- 4S3P lithium-ion battery packs
- 4S4P lithium-ion battery packs
- Other compatible 4S lithium-ion battery configurations
A standard lithium-ion cell has a full-charge voltage of approximately
4.2V. Four cells connected in series therefore require a maximum
charging voltage of:
4 x 4.2V = 16.8V
Maximum charging voltage for standard 4S lithium-ion batteries
The charger provides up to 1.8A charging current during the
constant-current stage. As the battery approaches full charge,
the charger maintains the appropriate maximum charging voltage
while charging current decreases.
This constant-current / constant-voltage charging process is
different from the operation of a regular fixed-voltage
AC-to-DC power adapter.
Battery Charger vs. Regular AC Power Adapter
Although a lithium-ion battery charger may look similar to a laptop
AC power adapter, they serve different purposes.
A lithium-ion battery charger is designed to regulate
charging current and charging voltage according to the requirements
of the battery chemistry.
A standard AC-to-DC power adapter generally provides
a fixed output voltage, while the connected equipment determines
how much current it draws.
A standard power adapter should not be substituted for a lithium-ion
battery charger unless the battery has an appropriate internal
charging controller and its manufacturer specifically permits
that type of input.
For a battery that requires an external 16.8V lithium-ion charger,
the ACC-16V2A provides the appropriate type of charging output,
subject to battery compatibility.
Worldwide 100-240V AC Input
The ACC-16V2A accepts 100-240V AC, 50/60Hz,
making it suitable for use in the United States and many
international locations.
The wide AC input range eliminates the need for a separate
voltage transformer in locations where the electrical supply
falls within the charger's specified input range.
A suitable plug adapter may be required in countries with
different electrical outlet configurations.
LED Charging Status Indicator
The built-in LED indicator provides a convenient way to
monitor the charging process.
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LED Color
|
Status
|
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Red
|
Battery charging in progress
|
|
Green
|
Charging complete under normal connected-battery conditions
|
A green indicator when no battery is connected does not
necessarily indicate that a battery has been charged.
Estimated Charging Time
Charging time depends on battery capacity, initial charge level,
battery condition, and the battery's internal charging limitations.
|
Battery Capacity
|
Estimated Charging Time
|
| 2Ah |
1.5-2 hours |
| 4Ah |
3-3.5 hours |
| 6Ah |
4-5 hours |
| 10Ah |
6.5-8 hours |
Estimates assume a compatible battery starting near empty
and charging near the rated 1.8A maximum. Actual charging
time may be longer.
Technical Specifications
| Brand |
BiXPower |
| Product Code |
ACC-16V2A |
| Product Type |
AC Lithium-Ion Battery Charger |
| AC Input |
100-240V AC, 50/60Hz |
| Maximum Output Voltage |
16.8V DC |
| Maximum Output Current |
1.8A |
| Maximum Rated Output Power |
30.24W |
| Battery Chemistry |
Compatible 4S Lithium-Ion |
| Nominal Battery Voltage |
14.4V / 14.8V |
| Output Connector |
5.5 x 2.5mm Male DC Barrel |
| Connector Polarity |
Center Positive |
| LED Indicator |
Red / Green |
| Warranty |
1 Year |
How to Charge Your Battery
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Verify that the battery is a compatible 14.4V / 14.8V
nominal 4S lithium-ion battery.
-
Confirm that its charging input accepts 16.8V and
a charging current of up to 1.8A.
-
Check that the battery uses a 5.5 x 2.5mm
center-positive DC charging connector.
-
Inspect the battery, charger, and cables for damage.
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Connect the charger's DC barrel plug to the battery's
designated charging port.
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Connect the charger to a suitable AC power outlet.
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The charging LED should normally turn red while charging.
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When charging is complete, the LED normally changes to green.
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Disconnect the AC power and remove the charging connector
after charging.
Important Battery Safety Information
- Use only with compatible 4S lithium-ion batteries requiring 16.8V charging.
- Do not use with 3S lithium-ion batteries requiring 12.6V charging.
- Do not use with 5S or 6S lithium-ion batteries requiring higher charging voltages.
- Do not use with LiFePO4, lead-acid, or other incompatible battery chemistries.
- Do not charge a battery that does not have suitable battery protection and charging provisions.
- Do not use this charger as a general-purpose DC power adapter.
- Never charge a damaged, swollen, leaking, or overheating battery.
Frequently Asked Questions
Q: Can this charger charge any 14.4V or 14.8V lithium-ion battery?
A: No. The battery must be a compatible 4S lithium-ion pack
designed for 16.8V charging, support a charging current of up to 1.8A,
and use a matching 5.5 x 2.5mm center-positive charging input.
Q: Can I use it with a battery that has a 5.5 x 2.1mm connector?
A: Not directly. The charger uses a 5.5 x 2.5mm connector.
The two connector sizes are different. A correctly wired
adapter may be used only if all other battery charging
requirements are satisfied.
Q: Is this a regular 16.8V DC power adapter?
A: No. This product is a lithium-ion battery charger
designed to control charging current and voltage.
It should not be used as a general-purpose DC power supply.
Q: Can it charge a 12V lithium-ion battery?
A: Only if the battery is actually a compatible 4S lithium-ion
pack with a 16.8V full-charge voltage. It is not suitable
for 3S lithium-ion or 12V LiFePO4 batteries.
Q: Can I use it with a 4S4P battery?
A: Yes, if the battery's charging input, polarity,
chemistry, and permitted charging current are compatible.
The 4S4P designation describes four series-connected
cell groups with four parallel cells in each group.
Q: Can I use the charger internationally?
A: Yes. It supports 100-240V AC, 50/60Hz.
A suitable plug adapter may be required in some countries.
Q: Does the charger include a battery?
A: No. This listing is for the AC battery charger.
Batteries are sold separately.
Other BiXPower 14.4V / 14.8V Battery Chargers
BiXPower offers several charging connector options
for compatible lithium-ion batteries.
Choose the charger that matches your battery's
charging connection and electrical requirements.
Compact and Convenient 16.8V Lithium-Ion Charging
The BiXPower ACC-16V2A combines a common
5.5 x 2.5mm barrel connector, controlled 16.8V
lithium-ion charging, worldwide AC input, and
easy-to-read LED charging status.
It is a practical choice for replacing an existing charger
or adding a spare charger to a compatible portable
lithium-ion battery system.
Choose the correct charger for your battery and
keep your portable power equipment ready for use.
Compatibility Notice: The ACC-16V2A is intended only
for compatible 4S lithium-ion batteries requiring
16.8V charging and accepting up to 1.8A through
a 5.5 x 2.5mm center-positive DC charging input.
Confirm the battery manufacturer's charging
requirements before connecting the charger.
