Small is a compact voltage converter designed for FPV batteries, allowing you to use your drone batteries to charge smartphones, tablets, power banks, and other compatible USB devices.

The converter connects directly to an FPV battery via an XT60 connector and converts the 10–30V DC input into the voltage required for USB-powered devices. It features two output ports — USB-A and USB Type-C — supporting a wide range of popular fast-charging protocols.

The built-in digital LED voltmeter allows you to monitor the FPV battery voltage during operation.

Thanks to its compact size and lightweight design, Small is convenient for use in the field. The housing includes an attachment point, allowing you to carry the converter as a keychain so it is always within reach.

This device is a practical accessory for military personnel, FPV drone operators, and anyone who uses FPV batteries as a portable power source.

Key Features & Benefits

• Specifically designed for use with FPV batteries.

• Quick and convenient connection via an XT60 connector.

• Operating input voltage: 10–30V DC.

• Two output ports: USB-A and USB Type-C.

• Supports popular fast-charging protocols, including QC, PD, AFC, FCP, and others.

• Built-in LED voltmeter for monitoring battery voltage.

• Compact housing with a keychain attachment option.

• Lightweight and portable for field operations and everyday use.

Technical Specifications

General Specifications

• Device type: DC-to-USB step-down voltage converter

• Operating input voltage: 10–30V DC

• Input connector: XT60-M

• Output ports: USB-A and USB Type-C

• Maximum output power: up to 65W (short-term)

• Display: built-in digital LED voltmeter

• Charging mode detection: automatic

Important: The listed charging protocol specifications indicate supported charging modes. The actual output power is limited by the converter's hardware capabilities and input power conditions. Support for the 100W USB PD profile does not mean the device can continuously deliver 100W.

Instructions for Use

Before Connecting

Check the condition of the battery, cables, and converter before use. Make sure the power source voltage is within the supported 10–30V range.

FPV batteries with 3S–7S configurations are recommended, provided their actual voltage remains within the device's specified operating range.

Connecting the Device

1. Connect the converter's XT60 input to the FPV battery, ensuring correct polarity.

2. Check the voltage displayed on the built-in voltmeter.

3. Connect your smartphone or another compatible USB device using the appropriate cable.

4. The converter will automatically negotiate a supported charging mode with the connected device.

After Use

First, disconnect the USB device, then unplug the converter from the battery.

Do not leave the adapter connected to a power source unnecessarily.

Important Safety Information

• Do not connect the converter to power sources exceeding 30V.

• Always monitor the battery's charge level during operation.

• Avoid deep discharging FPV batteries. Excessively low cell voltage may reduce battery capacity, shorten its lifespan, and negatively affect its ability to deliver high current under load.

• The built-in voltmeter displays the total battery voltage and does not replace individual cell voltage monitoring.

• Prevent short circuits and always observe correct connection polarity.

• Keep the device away from water, condensation, and excessive moisture.

• Do not use the converter to charge other batteries directly without a dedicated charging controller.

• The device is not designed for continuous operation with high-power equipment such as gaming laptops, electric heaters, kettles, or soldering irons.

• Do not connect the adapter to unstable power sources with excessive voltage ripple.

• Do not disassemble or modify the device's electronic circuitry.

Warning! This converter does not replace a battery protection system against deep discharge. The user is responsible for monitoring battery voltage and disconnecting the device before the battery reaches a critically low voltage.

What Is the Small Converter Designed For?

The Small converter is designed for situations where you need quick and convenient USB power from an available FPV battery equipped with an XT60 connector.

Its compact housing, fast-charging support, and built-in voltmeter make it suitable for field operations, FPV equipment setups, outdoor activities, travel, and everyday use.

Small — compact USB power from your FPV battery, always within reach.