12V 504Wh Super High Capacity Portable Lithium-Ion Battery Power Pack
High Capacity • Lightweight • Compact • Easy to Carry
The BiXPower BX3699-DC36VX-12V combines an impressive
504Wh battery capacity with a remarkably compact and
portable design. Unlike many high-capacity batteries that are bulky and
difficult to move, the BX3699 weighs only about 5.5 lb
and features a convenient built-in carrying handle,
making it easy to take wherever portable 12V power is needed.
High Capacity Without the Bulk
The BX3699 is designed for applications where you need substantial battery
capacity but still want a power source that is practical to carry.
Its 504 Watt-hour capacity provides a large energy reserve
in a housing measuring only approximately
9.8" × 4.4" × 3".
At approximately 5.5 lb (2.45 kg), this battery offers an
excellent combination of energy capacity, compact dimensions, and
portability.
Built-In Handle — Designed to Go With You
Portability is one of the unique advantages of the BX3699 design.
A sturdy integrated carrying handle is built directly into
the top of the battery enclosure. Simply pick it up and carry it from one
location to another — no separate battery bag or bulky carrying case is
required for normal transport.
The narrow, upright design also takes up less space than many conventional
high-capacity battery packs, making it convenient for mobile equipment,
field use, travel, backup power, and other applications where space and
weight matter.
Made With Premium-Brand Lithium-Ion Cells
The BX3699 battery pack is made with
premium-brand lithium-ion cells, selected for dependable
performance, high energy density, and long-term reliability.
High energy density is one of the reasons this battery can provide
504Wh of energy while remaining compact and lightweight.
It is an excellent choice when both runtime and portability are important.
Stable Regulated Constant 12V DC Output
he battery is supplied with a BiXPower DC-to-DC converter that slides
directly onto the battery. The converter changes the battery's variable
internal voltage into a constant, stable, regulated 12V DC
output.
The converter can supply up to 8A maximum output current.
The connected device draws only the current it requires. For example, if a
device requires 2A, the converter supplies approximately 2A — it does not
force 8A into the device.
Multiple Converter Protection Functions
The 12V converter incorporates multiple protection functions for dependable
operation:
- Output over-current protection
- Output over-voltage protection
- Output overload protection with automatic recovery
- Over-temperature protection
- Output short-circuit protection
Output Connector: 5.5 × 2.5mm male DC barrel connector
Battery Level Indicator
The built-in LED battery-level indicator provides a convenient way to check
the battery's remaining power status.
Built-In Battery Protection
The battery incorporates an internal protection system designed to help
protect the lithium-ion cells and connected equipment during normal use.
- Over-charge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Temperature protection
- Cell balancing
- Secondary protection
The battery uses a firm ABS enclosure, and the internal battery pack is
mechanically stabilized to help protect it from vibration during normal
handling and operation.
AC Charger Included
An AC battery charger is included. It accepts
110V–240V AC input, allowing the battery to be recharged
from standard AC power sources in many countries and regions.
Battery Specifications
| Battery Model |
BX3699 |
| Battery Chemistry |
Lithium-Ion |
| Capacity |
504 Watt-hours |
| Charge Voltage Limit |
42.5V |
| Maximum Charge Current |
3A |
| Dimensions |
245 × 110 × 75 mm (approx. 9.8" × 4.4" × 3") |
| Weight |
Approx. 2.45 kg / 5.5 lb |
| Charging 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 |
Why Choose the BX3699 12V Power Pack?
- 504Wh super high battery capacity
- Only approximately 5.5 lb
- Compact 9.8" × 4.4" × 3" design
- Built-in carrying handle for easy portability
- Made with premium-brand lithium-ion cells
- Stable, regulated 12V DC output
- Up to 8A maximum 12V output current
- Multiple battery and converter protection functions
- Universal-input AC charger included
Package Contents
- One BX3699 504Wh rechargeable battery
- One AC battery charger with AC power cord
- One slide-on 12V DC converter — maximum output 8A
Big Battery Capacity in a Compact, Carry-Friendly Design
With 504Wh of energy, premium-brand lithium-ion cells,
approximately 5.5 lb weight, compact dimensions, and an integrated
carrying handle, the BX3699 is designed for customers who need
serious portable power without carrying a large, heavy battery.
