Holybro PM08 Power Module (14S, 200A)

The Holybro PM08 is a high-capacity power distribution and monitoring module designed for 14S lithium battery systems with continuous current handling up to 200A, making it ideal for heavy-lift drones, autonomous vehicles, and industrial UAV applications. Professional drone integrators and UAV manufacturers rely on this module to safely distribute power from multi-cell battery packs while providing real-time voltage and current monitoring through integrated analog outputs. This power module solves the critical challenge of managing high-current power distribution in multi-rotor systems while maintaining voltage regulation and preventing catastrophic power loss due to connector failures or voltage sags.

Product Overview

The Holybro PM08 Power Module operates as a high-current power distribution hub with integrated voltage and current sensing capabilities. It features a robust design with redundant power inputs and outputs, allowing simultaneous connection of multiple ESCs or power consumers while maintaining accurate telemetry feedback. The module uses low-resistance connectors and PCB traces to minimize voltage drop across the 200A operational range, critical for maintaining stable power delivery to flight controllers and peripheral systems during peak current draw scenarios. The integrated current sensor provides proportional analog output (0-3.3V) corresponding to 0-200A, enabling real-time power monitoring through flight controller ADC inputs.

What distinguishes the PM08 from standard power distribution boards is its 14S-specific design with voltage regulation optimized for 52V nominal battery systems (48.6V to 58.8V operational range). The module incorporates protective features including reverse polarity protection, over-current handling through robust traces, and thermal management through optimized PCB layout. The dual XT90-S connectors on the input side support parallel battery connections for increased capacity or redundancy, while multiple output connectors accommodate distributed power consumption patterns in complex multi-rotor or ground vehicle architectures.

Key Specifications

Specification	Details
Product Type	Power Distribution Module with Integrated Current Sensing
Brand	Holybro
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Battery Configuration	14S LiPo/LiHV (48.6V - 58.8V)
Continuous Current Rating	200A
Peak Current Rating	250A (10 second burst)
Input Connectors	Dual XT90-S (Anti-spark)
Output Connectors	XT60 or XT90 (configurable)
Current Sensor Output	0-3.3V analog (0-200A proportional)
Voltage Sensor Output	0-3.3V analog (0-60V proportional)
PCB Dimensions	65mm x 65mm x 15mm
Weight	85 grams

Key Features

• 200A Continuous Current Capacity with 250A peak rating for demanding high-performance drone and vehicle applications requiring sustained power delivery during aggressive maneuvers
• Integrated Dual Sensing (Current and Voltage) providing real-time telemetry feedback via analog outputs compatible with Pixhawk, ArduPilot, and PX4 flight controllers for comprehensive power monitoring
• Dual XT90-S Anti-spark Input Connectors enabling safe parallel battery connection for increased capacity or redundant power architecture without risk of arcing during connection
• Low-Resistance Power Path with optimized PCB layout and trace design minimizing voltage drop to under 0.5V at 200A, critical for maintaining stable power delivery to flight control systems
• 14S Optimized Design specifically engineered for 52V nominal battery systems with voltage regulation and protection tailored to high-voltage lithium battery characteristics
• Compact Form Factor at 65x65mm footprint allowing integration into space-constrained airframe and vehicle chassis designs without significant weight penalty

Applications and Use Cases

• Heavy-Lift Cargo Drones requiring sustained 150-200A current draw for large brushless motors, where accurate power distribution and real-time current monitoring prevent voltage sag-induced flight instability
• Industrial Inspection UAVs with extended flight times and multiple payload systems (thermal cameras, LiDAR, communication modules) requiring distributed power management and voltage monitoring across 14S battery systems
• Autonomous Ground Vehicles and rovers powered by 14S battery packs where high-current motor controllers and auxiliary systems demand reliable power distribution with integrated telemetry for battery health monitoring
• Racing Quadcopters and high-performance FPV platforms operating at maximum throttle requiring 200A+ current handling capacity with minimal voltage drop to maintain consistent motor performance and control responsiveness

How to Use

Installation begins with secure mounting of the PM08 module to your airframe or vehicle chassis using vibration-dampening standoffs, positioning it centrally to minimize wire lengths from battery input to ESC outputs. Connect your 14S battery pack to the dual XT90-S input connectors in parallel if using multiple batteries, ensuring proper polarity (red to positive, black to ground). The module's analog outputs (typically labeled CURR and VOLT) must be connected to your flight controller's ADC inputs using shielded signal cables kept separate from high-current power traces to minimize noise interference with sensor readings.

Configure your flight controller firmware to recognize the PM08 module by setting the appropriate battery monitor type (typically Analog Voltage and Current) and calibrating the current sensor offset and scaling parameters. A typical 200A sensor calibration uses 0V corresponding to 0A and 3.3V corresponding to 200A, though verify your specific firmware documentation. Connect all ESCs and power consumers to the XT60/XT90 output connectors, distributing the load across multiple outputs if available to prevent any single connector from handling the full 200A. Before flight operations, verify voltage and current readings match your battery specifications and perform a ground test at various throttle levels to confirm sensor accuracy and identify any wiring issues before committing to aerial operations.

Frequently Asked Questions

Can I use the PM08 with 6S or 12S battery systems?

The PM08 is specifically designed and optimized for 14S LiPo/LiHV battery systems with voltage range 48.6V to 58.8V. Using it with lower cell-count batteries will result in incorrect voltage sensor calibration and potential accuracy issues. For 6S systems, use Holybro PM06, and for 12S systems, use Holybro PM07. Using the wrong cell configuration may also void warranty coverage.

What is the voltage drop across the PM08 at maximum current?

The PM08 is engineered to maintain voltage drop below 0.5V when carrying 200A continuous current, achieved through low-resistance XT90-S connectors and optimized PCB trace design with appropriate copper weight. This minimal voltage drop ensures stable power delivery to flight controllers and ESCs, preventing voltage sag-induced instability during high-current maneuvers. Actual voltage drop depends on connector contact quality and wire gauge used in your installation.

How do I calibrate the current and voltage sensors?

Most flight controller firmware (ArduPilot, PX4) provides automatic or manual calibration routines for analog battery monitors. For the PM08, typical calibration uses 0V = 0A and 3.3V = 200A for current, and 0V = 0V and 3.3V = 60V for voltage. Access your flight controller's power monitor settings through mission planner or QGroundControl, select the appropriate battery monitor type, and input these scaling parameters. Perform a ground test with a known battery voltage to verify accuracy before flight operations.

Can I parallel multiple PM08 modules for higher current capacity?

Paralleling power distribution modules is not recommended as it creates complex current-sharing dynamics and makes individual module failure diagnosis difficult. Instead, use larger capacity batteries or select higher-rated power modules like Holybro's commercial-grade solutions. If you require redundancy, implement dual independent power systems with separate batteries and flight controllers rather than parallel power distribution modules.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

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• Returns: 7-day return policy on manufacturing defects only

Buy Holybro PM08 Power Module (14S, 200A) Online in India

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