19V Super High-Capacity Rechargeable Battery Pack
Constant 19V DC Output • Up to 6A • 504Wh Capacity • Portable Power for Compatible 19V Devices
The BiXPower BX3699-DC36VX-19V is a high-capacity portable
rechargeable battery system designed to provide a
stable, regulated constant 19V DC output for compatible laptops,
electronics, communication equipment, portable devices and other equipment
requiring 19V DC power.
The system combines a 504Wh BX3699 rechargeable battery
with a BiXPower slide-on DC power converter. The converter attaches directly
to the battery and converts the battery's variable voltage into a
constant regulated 19V DC output with up to 6A maximum output current.
With approximately 504 watt-hours of stored energy, this
battery provides substantially more runtime than typical small portable
battery packs, making it useful for extended mobile, field and backup-power
applications.
Slide-On 19V DC Power Converter
The included 19V DC converter slides directly onto the BX3699 battery.
There is no need for a separate cable between the battery and converter.
Once installed, the converter provides a convenient regulated
19V DC output.




Key Features
- 504Wh High Capacity: Provides extended operating time for compatible 19V equipment.
- Regulated 19V Output: The included DC converter maintains a stable 19V output as battery voltage changes during discharge.
- Up to 6A Output: Supports compatible devices requiring up to 6A at 19V.
- Slide-On Converter: Converter attaches directly to the battery for a compact integrated power system.
- Portable Design: Built-in carrying handle makes the battery convenient to transport.
- 4-Level Battery Indicator: Quickly check approximate remaining battery capacity.
- Rechargeable: Includes an AC charger for charging from standard 110V–240V AC power.
- Built-In Protection: Battery management circuitry provides multiple electrical safety protections.
- Optional Connector Tips: Available for devices that require a DC connector other than the standard 5.5 × 2.5mm output.
504Wh Capacity in a Portable Package
Despite its large 504Wh energy capacity, the BX3699 is
designed for portable use. The battery measures approximately
245 × 110 × 75 mm (9.8 × 4.4 × 3 inches) and weighs
approximately 2.45 kg (5.5 lb).
A built-in carrying handle makes it easier to transport the battery between
home, office, vehicle, field and mobile applications.
4-Level Battery Power Indicator
The built-in LED battery-level indicator provides a quick visual indication
of the battery's approximate remaining power, helping you determine when
the battery should be recharged.
AC Charger Included
The battery comes with its own AC charger and AC power cord. The charger
accepts a wide AC input range, allowing the battery to be charged from
compatible 110V–240V AC power sources.
Stable Regulated 19V DC Output
The BX3699 battery itself has a variable battery voltage that changes as
the battery charges and discharges. The included BiXPower converter regulates
this changing battery voltage and provides a
constant 19V DC output for compatible equipment.
Understanding the 6A Rating
6A is the converter's maximum available output current.
It does not mean that the converter continuously forces 6A into your device.
A compatible device draws only the current it requires. For example, if a
19V device requires 2A, it will normally draw approximately 2A rather than 6A.
Flexible Positioning
The compact battery and slide-on converter design allows the power pack to be positioned in several orientations, making it easier to place beside a bed, on a table, in an RV, or in other limited-space locations.

Simple Battery Controls
The BX3699 battery features a convenient ON/OFF switch, dedicated charging port, battery power output socket, and an easy-to-read power-level indicator.
Built-In Converter Protection
The 19V DC converter incorporates multiple protection functions designed
to protect the converter and connected equipment under abnormal operating
conditions.
- Output over-current protection
- Output over-voltage protection
- Output overload protection
- Automatic recovery after certain overload conditions are removed
- Over-temperature protection
- Output short-circuit protection
Standard 5.5 × 2.5mm DC Output Connector
The converter's output cable terminates in a
5.5mm outer diameter × 2.5mm inner diameter male barrel connector.
This connector is commonly used by many 19V DC-powered devices.
Important:
Voltage alone does not determine compatibility. Before connecting your device,
verify the required voltage, connector size, polarity and power/current
requirements.
Optional Connector Tips for Different Devices
If your device does not use a 5.5 × 2.5mm DC input connector, an
optional 12-piece interchangeable connector-tip set is
available.
These connector tips plug onto the converter's existing output connector
to provide different connector sizes for compatible equipment.
Select the optional connector-tip package from the product options above
when ordering if your equipment requires a different connector.
Easy Connector Installation
The appropriate connector tip simply plugs onto the existing DC output
connector to create the connector required by your compatible device.
Battery Protection & Durable Construction
The BX3699 uses a durable ABS enclosure and incorporates a battery
management/protection system designed to help protect the rechargeable
battery during normal operation.
- Cell balancing
- Over-discharge protection
- Over-current protection
- Over-charge protection
- Temperature protection
- Secondary protection
- Firm ABS plastic enclosure
- Water-resistant construction
- Internal battery pack stabilized to help withstand normal vibration
Technical Specifications
| Product Model |
BX3699-DC36VX-19V |
| Battery Model |
BX3699 |
| Battery Chemistry |
Lithium-ion |
| Energy Capacity |
504Wh |
| Charge Voltage Limit |
42.5V |
| Maximum Charge Current |
3A |
| Battery Dimensions |
245 × 110 × 75 mm (9.8 × 4.4 × 3 in) |
| Battery Weight |
Approx. 2.45 kg (5.5 lb) |
| Charge Temperature |
0°C to 45°C |
| Discharge Temperature |
-20°C to 60°C |
| Storage Temperature |
-20°C to 40°C |
| Rated Cycle Life |
Approx. 500 cycles |
| Regulated Output Voltage |
19V DC |
| Maximum Output Current |
6A |
| Output Connector |
5.5 × 2.5mm Male Barrel Connector |
| Battery-Level Indicator |
4-Level LED |
| Warranty |
1-Year Limited Warranty |
How Long Can a 504Wh Battery Run Your Device?
Actual runtime depends on the connected device's power consumption,
conversion efficiency, battery condition, temperature and other operating
conditions.
A simple way to estimate theoretical runtime is:
Runtime (hours) ≈ Usable Battery Energy (Wh) ÷ Device Power (W)
For example, a lower-power device can operate considerably longer than a
high-power 19V device. Actual usable runtime will be lower than a simple
504Wh ÷ device-wattage calculation because every power system has conversion
losses and other operating factors.
Typical Applications
- Compatible 19V laptops and notebook computers
- Portable monitors and displays
- Communication equipment
- Mobile workstations
- Field electronics
- Portable testing equipment
- Compatible 19V routers and network equipment
- Photography and video equipment requiring 19V DC
- Remote and off-grid electronics
- Emergency and backup DC power
Check Your Device Before Ordering
For proper operation, your device should:
- Require approximately 19V DC input
- Require no more than the converter's supported output capacity
- Use a compatible connector or one of the available optional connector tips
- Use compatible DC polarity
Always check the voltage, current/power requirement, connector size and
polarity printed on your device or its original AC adapter before connecting
the battery.
Package Contents
- 1 × BX3699 Rechargeable Battery — 504Wh
- 1 × AC Battery Charger
- 1 × AC Power Cord
- 1 × Slide-On 19V DC Converter — up to 6A output
- Optional: 12 interchangeable DC connector tips when selected with the order
Please Note:
The 12 interchangeable connector tips are optional. Select the connector-tip
option when ordering if your device does not use the converter's standard
5.5 × 2.5mm output connector.
1-Year Limited Warranty
The BiXPower BX3699-DC36VX-19V rechargeable battery system includes a
1-year limited warranty against manufacturing defects.
Portable 19V Power with 504Wh of Battery Capacity
Combining a 504Wh rechargeable battery with a
regulated 19V DC output up to 6A, the BiXPower
BX3699-DC36VX-19V provides a practical high-capacity portable power source
for compatible laptops, electronics and other 19V DC equipment. Its
slide-on converter, built-in carrying handle, battery-level indicator,
included AC charger and optional interchangeable connector tips make it
a flexible solution for mobile, field, backup and off-grid applications.