BiXPower BX2499-12V – 322Wh High-Capacity
Rechargeable Battery with Regulated 12V DC Output
The BiXPower BX2499-12V
is a high-capacity portable rechargeable
battery system designed to provide
stable 12V DC power
for compatible electronic devices.
This package combines a
322Wh rechargeable lithium-ion
battery with a compact,
high-efficiency
12V DC-to-DC power converter.
The converter transforms the battery's
variable output into a regulated
12V DC supply.
With up to 6A (72W)
of regulated 12V output,
the system is suitable for compatible
portable electronics, communication
equipment, monitoring devices
and other equipment requiring
a stable 12V DC input.
The compact converter also provides
a separate USB charging port
for compatible USB-powered devices.
Key Features
- 322Wh rechargeable battery: High-capacity portable energy storage.
- Regulated 12V DC output: Stable voltage through the included converter.
- Up to 6A output: Maximum 72W from the 12V DC converter.
- High efficiency: DC converter efficiency rated up to 96%.
- Wide converter input: Accepts 10–30V DC.
- USB charging port: Supports compatible 5V, 9V and 12V USB charging profiles.
- Portable battery: Integrated handle, power switch and LED battery indicators.
- AC charger included: Recharge from a 100–240V AC outlet.
- Compact converter: Approximately 2.5 × 1.9 × 0.7 inches.
- Optional connector tips: Available for compatible DC power jacks.
322Wh Battery with Stable 12V Output
Many rechargeable batteries provide
an output voltage that changes
as the battery discharges.
The BX2499 battery itself
has a nominal voltage of
approximately 25V DC,
with an operating range of
approximately 20–29.5V DC.
The included DC-to-DC converter
regulates that changing voltage
to a stable 12V DC output.
This is useful for equipment
that requires a consistent
12V supply rather than
a variable battery voltage.
BX2499 battery with compact
12V DC converter.
Important:
The regulated 12V output
is provided by the included
DC-to-DC converter, not directly
by the battery's raw output terminals.
Do not connect a 12V-only device
directly to the battery's
20–29.5V output.
High-Capacity Portable Battery
The BX2499 rechargeable battery
stores 322 watt-hours
of nominal energy.
Its integrated carrying handle
makes it convenient to transport
between compatible applications.
The battery measures approximately
175 × 110 × 75mm
(6.8 × 4.3 × 3 inches)
and weighs approximately
2kg (4.3 lb).
The battery features
a power On/Off switch,
a charging input,
LED charge indicators
and a battery output
contact socket.
Battery controls and connection points.
Battery Output Connection
The battery output is accessed
through its contact socket
and compatible output adapter.
The converter connects
to the battery's DC output
through the supplied cable
arrangement.
The output adapter connects
the battery to the included
12V DC converter.
Always make sure
the adapter and cable
are securely connected.
How to Charge the Battery
The BX2499 package includes
a compatible AC battery charger.
The charger accepts
100–240V AC input,
allowing charging from
standard household power outlets.
Charge the battery through
its designated charging input.
- Turn off the battery and disconnect the load when practical.
- Connect the supplied AC charger to the battery's designated charging input.
- Plug the charger into a compatible AC outlet.
- Allow the battery to charge according to the charger's indicators and instructions.
- Disconnect the charger after charging is complete.
Charging Safety:
Use the included charger
or a BiXPower-approved replacement.
Do not use an arbitrary DC adapter
to charge the battery.
A suitable lithium-ion charger
must regulate charging voltage
and current correctly.
Understanding Battery Voltage
The BX2499 battery is a
25V-class rechargeable battery.
Its actual output voltage
varies with its charge level.
When fully charged,
the battery output
is approximately 29.5V.
As the battery discharges,
the voltage gradually decreases
toward approximately 20V.
During much of its operating cycle,
the voltage is typically
around 24–26V.
The included DC converter
accepts this variable battery
voltage and provides
regulated 12V DC output.
Compact High-Efficiency 12V DC Converter
The included BiXPower converter
is designed for applications
where compact size,
high efficiency and
stable DC voltage are important.
The converter accepts
10–30V DC input
and supplies a regulated
12V DC output
rated up to 6A.
Its maximum regulated
12V output power is
72W.
The converter's efficiency
is rated up to
96%, helping
reduce energy losses
and extend battery runtime.
Small Size, Lightweight Design
The converter measures
approximately
63.5 × 48.9 × 16.9mm
(2.5 × 1.9 × 0.7 inches)
and weighs only
72g (2.54 oz).
Its compact design makes
the system convenient
for portable power applications.
12V DC Output Cable and USB Port
The converter features
a DC output cable with
a 5.5 × 2.5mm
male barrel connector.
It also includes
a USB charging port
for compatible USB devices.
Connector Current Rating:
The 5.5 × 2.5mm output connector
must be used within its
appropriate continuous current rating.
For operation near the converter's
6A maximum, verify that the
connector, cable and device jack
can safely carry the current.
Keep connections secure and
monitor for excessive heating.
Battery and Converter Connected Together
The battery provides energy
to the converter through
its DC output adapter.
The converter then supplies
regulated 12V DC power
to a compatible device.
This arrangement is useful
when a portable device
requires stable 12V input
but a high-capacity
rechargeable battery
is preferred over
a conventional AC adapter.
USB Charging Capability
In addition to regulated
12V DC output,
the converter provides
a USB charging port
with supported profiles
up to:
- 5V / 3A
- 9V / 2A
- 12V / 1.5A
Actual USB voltage and
charging performance depend
on the connected device
and supported charging protocol.
Do not assume every USB device
will negotiate every listed
charging voltage.
Estimated Battery Runtime
The BX2499 battery stores
322Wh of nominal energy.
Actual operating time depends
on device power consumption,
converter efficiency,
battery condition and temperature.
The following examples assume
approximately 85% overall
usable energy at the regulated
12V output.
| 12V Device Power |
Estimated Runtime* |
| 10W | 27.4 hours |
| 15W | 18.2 hours |
| 20W | 13.7 hours |
| 30W | 9.1 hours |
| 40W | 6.8 hours |
| 50W | 5.5 hours |
| 60W | 4.6 hours |
| 72W | 3.8 hours |
*Illustrative calculations use
322Wh × 85% = 273.7Wh.
These are planning estimates,
not guaranteed runtimes.
Actual usable energy may be
lower depending on conditions.
Typical Applications
The BX2499-12V is suitable
for compatible equipment
that requires regulated
12V DC power and draws
no more than 6A (72W).
- Compatible 12V portable electronics
- 12V communication equipment
- Portable monitoring instruments
- Compatible DC-powered lighting
- 12V networking and electronic equipment
- Portable electronic test equipment
- Other compatible 12V DC devices
For any specific device,
confirm its required
input voltage, current,
power consumption,
connector dimensions
and polarity before connecting.
Package Contents
Standard package contents.
- 1 × BX2499 rechargeable battery – 322Wh nominal capacity
- 1 × Compatible AC battery charger
- 1 × Regulated 12V DC-to-DC converter – up to 6A output
Optional connector tips
are sold separately
unless specifically
included with the order.
Optional DC Connector Tips
The converter's DC output
cable terminates in a
5.5 × 2.5mm
male barrel connector.
Compatible BiXPower
C-series connector tips
can be fitted over
this connector to
adapt it to other
DC jack dimensions.
Connector tips change
the physical plug size,
not the converter's
12V output voltage.
Check connector dimensions,
polarity and current rating
before selecting a tip.
Technical Specifications
BX2499 Rechargeable Battery
| Brand | BiXPower |
|---|
| Product Model | BX2499-DD90M-12V |
|---|
| Battery Model | BX2499 |
|---|
| Battery Chemistry | Rechargeable lithium-ion |
|---|
| Nominal Energy Capacity | 322Wh |
|---|
| Nominal Battery Voltage | Approximately 25V DC |
|---|
| Raw Battery Voltage Range | 20–29.5V DC, unregulated |
|---|
| Maximum Continuous Battery Discharge | 12A |
|---|
| Battery Dimensions | 175 × 110 × 75mm (approximately 6.8 × 4.3 × 3 inches) |
|---|
| Battery Weight | Approximately 2kg (4.3 lb) |
|---|
| Charging Temperature | 0°C to 45°C |
|---|
| Discharge Temperature | −20°C to 60°C |
|---|
| Storage Temperature | −20°C to 40°C |
|---|
| Cycle Life | Approximately 500 cycles, depending on use |
|---|
| Battery Protection | Cell balancing, overcharge, overdischarge, overcurrent, temperature and secondary protection |
|---|
| AC Charger | Included, compatible with 100–240V AC input |
|---|
Regulated 12V DC Converter
| DC Input Voltage | 10–30V DC |
|---|
| Regulated DC Output | 12V DC |
|---|
| Maximum DC Output Current | 6A |
|---|
| Maximum DC Output Power | 72W |
|---|
| Maximum Rated Efficiency | Up to 96% |
|---|
| USB Output Profiles | 5V/3A, 9V/2A or 12V/1.5A maximum, subject to device negotiation |
|---|
| DC Output Connector | 5.5 × 2.5mm male barrel connector |
|---|
| Dimensions | 63.5 × 48.9 × 16.9mm (2.5 × 1.9 × 0.7 inches) |
|---|
| Weight | 72g (2.54 oz) |
|---|
| Operating Temperature | 0°C to 40°C |
|---|
| Storage Temperature | −20°C to 70°C |
|---|
| Operating Humidity | 20–80% RH |
|---|
| Storage Humidity | 10–90% RH, non-condensing |
|---|
| Ripple and Noise | ≤300mV |
|---|
| Converter Protection | Short-circuit, overcurrent, overvoltage and overtemperature protection |
|---|
Important Compatibility and Safety Information
Before Connecting Equipment
- Confirm that the device requires regulated 12V DC.
- Verify that device power consumption does not exceed 72W.
- Check the DC connector size and polarity.
- Confirm that the connector and cable can safely carry the operating current.
- Allow adequate ventilation around the converter.
- Do not connect equipment directly to the raw battery output if it requires 12V.
- Do not exceed the battery's or converter's rated operating limits.
Battery Care
- Use only compatible approved chargers.
- Do not disassemble, puncture, crush or modify the battery.
- Do not short-circuit battery terminals or output connections.
- Keep the battery and converter away from water, fire and excessive heat.
- Do not charge a damaged, swollen or overheating battery.
- Charge on a stable, nonflammable surface in a ventilated location.
- For extended storage, keep the battery partially charged in a cool, dry location.
- Do not leave the battery fully discharged for extended periods.
- Recycle used batteries through appropriate collection programs.
Transportation and Air Travel
The BX2499 battery has a
nominal capacity of 322Wh,
which exceeds standard
passenger-aircraft limits
for spare lithium-ion batteries.
Do not assume it is permitted
in passenger baggage.
Commercial shipping must
comply with applicable
lithium-ion battery
transport requirements.
Frequently Asked Questions
Does the BX2499-12V provide a constant 12V output?
Yes. The included
DC-to-DC converter regulates
the battery's variable
20–29.5V output to
stable 12V DC.
What is the maximum 12V output current?
The included converter
provides up to 6A
at 12V DC,
equivalent to 72W.
What is the battery capacity?
The BX2499 rechargeable
battery has a nominal
energy capacity of 322Wh.
Can I use this battery with a 12V electronic device?
Yes, if the device
accepts regulated 12V DC,
requires no more than 6A,
and has compatible
connector and polarity
requirements.
Can I power a device requiring more than 72W?
Not through the included
12V converter.
The converter's maximum
regulated output is 72W.
A higher-power device
requires a different
properly rated power solution.
Does the system include a USB charging port?
Yes. The converter includes
a USB charging port
supporting compatible
5V, 9V and 12V
charging profiles.
Does the package include the AC charger?
Yes. The standard package
includes the BX2499 battery,
a compatible AC charger
and the regulated
12V DC converter.
Can I use optional connector tips?
Yes. Compatible BiXPower
C-series connector tips
can adapt the standard
5.5 × 2.5mm output plug
to other compatible
DC connector sizes.
Can I take the BX2499 battery on an airplane?
The battery's 322Wh
capacity exceeds the
standard passenger-aircraft
limits for spare
lithium-ion batteries.
Confirm applicable
transport requirements
before travel.
One-Year Limited Warranty
The BiXPower BX2499-12V
includes a
one-year limited warranty
covering qualifying
manufacturing and
material defects.
Rechargeable batteries
naturally lose capacity
over time due to use
and aging. Normal
capacity reduction
is not considered
a manufacturing defect
and is not covered
by the limited warranty.
Reliable High-Capacity 12V Portable Power
With a 322Wh rechargeable
battery, regulated
12V DC output,
up to 6A power delivery,
compact high-efficiency
converter and included
AC charger, the
BiXPower BX2499-12V
provides a versatile
portable power solution
for compatible 12V
electronic equipment.
BiXPower – Professional Portable Power Solutions.
