36V 14Ah 504Wh Mountable Rechargeable Battery with Locking Holder
504Wh Capacity • 15A Continuous Output • Removable Battery •
Key-Locking KF562 Holder • AC Charger Included
The BiXPower BX3699H is a high-capacity
36V 14Ah / 504Wh rechargeable battery system designed
for professional and custom DC power applications that require a
removable, mountable battery.
Unlike a basic battery pack, this system includes the
KF562 keyed holder and power-output box. The holder can
be mounted to compatible equipment or a frame, allowing the battery to
slide on and off when needed. A built-in key lock helps
secure the battery to the holder during use.
The system also includes a compatible AC battery charger
that can charge the battery from a 100–240V AC power source.
Key Features
- 36V nominal voltage
- 14Ah / 504Wh high energy capacity
- 15A maximum continuous discharge
- 18A burst discharge for up to approximately 10 minutes
- Compact size: approximately 9.8 × 4.4 × 3 inches
- Battery weight: approximately 5.5 lb
- Built-in carrying handle
- 4-level battery power indicator
- Key-locking removable battery system
- KF562 mounting holder / output box included
- AC battery charger included
- Bare-wire output standard
- Optional Anderson Powerpole output connectors
Battery Controls & Connections
The BX3699 battery combines its main controls, charging connection,
output contacts and power-level indicator into a compact enclosure.
- 4-Level LED Indicator — shows approximate remaining battery capacity.
- 15A Fuse — provides additional output-circuit protection.
- Power On/Off Switch — controls battery output.
- Built-In Handle — makes the battery easier to carry.
- Battery Contact Socket — interfaces with the KF562 holder/output box.
- Charging Input Jack — connects to the included AC charger.
504Wh Capacity in a Compact, Portable Battery
The BX3699 provides approximately 504 watt-hours of
energy while weighing only about 5.5 lb (2.45 kg).
Its compact enclosure measures approximately
245 × 110 × 75 mm (9.8 × 4.4 × 3 inches).
The integrated folding handle makes the battery easy to carry and allows
it to remain compact when the handle is not being used.
Important: 36V Is the Nominal Voltage
The BX3699 is referred to as a 36V battery, but its
output is not regulated to a constant 36.0V.
When fully charged, the battery voltage is approximately
42V. The voltage gradually decreases as the battery
discharges, with a final cut-off voltage of approximately
30V.
Check Equipment Voltage Compatibility
Your equipment must be able to accept the battery's actual output-voltage
range of approximately 30V–42.55V DC. If your equipment
requires a fixed regulated voltage, an appropriate DC-to-DC converter
should be used between the battery and the equipment.
High-Power DC Output
The battery supports up to 15A continuous discharge current
and up to 18A burst discharge current for up to
approximately 10 minutes.
Because battery voltage changes during discharge, available wattage also
varies with battery voltage. Always design the connected system around
the battery's voltage and current limits rather than relying only on a
single wattage figure.
KF562 Key-Locking Holder & Power-Output Box
A major feature of the BX3699H system is the included
KF562 holder and output box. It provides both a mounting
system for the battery and an electrical output connection.
Once the holder is mounted to compatible equipment or a frame, the
battery can slide onto or off the holder. The key lock
secures the battery in position during use and makes battery removal
convenient when the battery needs to be charged, transported or stored.

KF562 Output Box Specifications
| Model |
KF562B.150 |
| Approx. Size |
95 × 89 × 102 mm |
| Wire Length |
1500 mm |
| Standard Output |
Two bare wires |
Flexible Mounting
The KF562 holder incorporates an adjustable mounting clamp that can be
used for compatible frame-mounted applications. The holder is designed
to support different installation orientations, depending on the
equipment and available mounting space.

4-Level Battery Power Indicator
The built-in LED indicator provides a convenient visual indication of
the battery's approximate remaining charge level.
The indicator makes it easier to check battery status before use,
during operation and before recharging.
AC Charger Included
A compatible AC charger is included with the battery system. The charger
accepts a 100–240V AC power source, allowing the battery
to be charged from common AC mains power.
The battery can be removed from the holder for convenient charging.
Depending on the installation, it may also be possible to recharge it
while it remains mounted.
Long-Term Storage
Recharge the battery periodically during extended storage. Store it in
a cool, dry location and avoid leaving the battery in a fully discharged
condition for extended periods.
Optional Anderson Powerpole Output Connectors
The standard KF562 output connection uses
two bare wires. For customers who prefer a convenient
removable DC connection, optional Anderson Powerpole
connectors are available.
Select the Anderson connector option when ordering and the connectors
will be installed on the output wires.
Important — Observe Correct Polarity
When using bare output wires, verify positive and negative polarity
before connecting equipment. Incorrect polarity can damage the battery,
connected equipment or both.
Built-In Battery Protection
The battery uses a firm, water-resistant ABS enclosure and incorporates
built-in protection circuitry. The internal battery pack is supported
to help reduce movement caused by normal vibration.
- Cell balancing
- Over-charge protection
- Over-discharge protection
- Over-current protection
- Temperature protection
- Secondary protection
Water-Resistant — Not Waterproof
Protect the battery from water immersion, heavy water exposure and
prolonged wet conditions.
Technical Specifications
| Battery Model |
BX36H99B |
| Cell Brand |
Panasonic |
| Battery Chemistry |
Lithium-Ion |
| Nominal Voltage |
36V DC |
| Minimum Voltage |
30V |
| Maximum Voltage |
42.55V |
| Capacity |
14Ah / 504Wh |
| Configuration |
10S4P |
| Charge Voltage Limit |
42.5V |
| Maximum Charge Current |
2.5A |
| Continuous Discharge Current |
15A |
| Burst Discharge Current |
18A, up to approximately 10 minutes |
| 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 |
| Output Holder Model |
KF562B.150 |
| Output Wire Length |
Approx. 1500 mm |
| Warranty |
1-Year Limited Warranty |
Designed for Professional & Custom 36V Applications
The combination of high capacity, high discharge capability and a
removable locking holder makes the BX3699H suitable for many compatible
professional and custom DC power applications, including:
- 36V DC equipment
- Mobile equipment
- Robotics and automation systems
- Portable DC power systems
- Field equipment
- Custom battery-powered equipment
- Remote power systems
- OEM and system-integration projects
Always verify your equipment's input-voltage range, current requirement,
connector configuration and polarity before connecting the battery.
Professional / Advanced User Product
This is a high-energy rechargeable battery system intended for users
who understand DC electrical systems and can properly determine voltage,
polarity, wire size, connector ratings, fusing and equipment compatibility.
- Verify equipment voltage compatibility before connection.
- Observe correct positive and negative polarity.
- Use appropriately rated wiring and connectors.
- Never short-circuit the output wires or contacts.
- Do not exceed the battery's current ratings.
- Use only a compatible charger.
- Do not disassemble or modify the battery pack.
- Protect the battery from excessive heat, impact and water immersion.
Package Contents
- 1 × BX3699 36V 14Ah / 504Wh Rechargeable Battery
- 1 × KF562 Key-Locking Holder / Output Box
- 2 × Keys
- 1 × Compatible AC Battery Charger
- 1 × AC Power Cord
- Standard output: two bare wires
- Optional output: Anderson Powerpole connectors when selected
1-Year Limited Warranty
This product includes a 1-year limited warranty covering
manufacturing and quality defects.
Rechargeable batteries are consumable products. The amount of energy a
battery can store gradually decreases through normal use and aging.
Normal capacity reduction resulting from use and aging is not considered
a manufacturing defect.
High-Capacity 36V Power in a Removable, Locking Battery System
With 36V nominal voltage,
14Ah / 504Wh capacity,
15A continuous discharge capability, Panasonic cells,
an included AC charger and the KF562 key-locking mounting
holder, the BiXPower BX3699H provides a practical high-capacity
rechargeable battery solution for compatible professional, mobile and
custom 36V DC applications.