USB Charger Doctor Inline Voltmeter and Ammeter

Oh no! This patient’s temperature is rising! Could it be that the voltage is too low or the current draw too high? Is there a doctor around? Thank goodness, the USB Charger Doctor (Voltmeter Ammeter) has arrived! Just in time! Doctor, can you help us by checking the current draw? And the voltage? Thanks to the Doctor, you'll now be able to monitor and take care of your USB-powered projects.

The USB Charger Doctor allows you to measure the working voltage and current output of any USB port or project. This blue plastic device plugs into a USB device, passing the data lines through, and has a 0.05-ohm resistor in line with the power pin to measure current draw.

The Doctor's digital display immediately shows the test results, making it perfect for checking devices such as chargers, cables, and cell phones.

This device supports an input voltage range of 3.5-7VDC (though most USB devices typically operate around 4.75 to 5.25V) and can handle up to 3A of current. It alternates between voltage and current readings every 3 seconds, making it a handy tool for testing USB devices, checking load levels, and troubleshooting battery chargers and boost converters. It’s a bit bulkier than our USB Power Gauge Mini-Kit, but provides more detailed numerical information. However, it's not open source, so if you're looking to create your own power gauge, the USB Power Gauge Mini-Kit might be a better option.

Features:

• Compact, easy to carry, and doesn’t require an additional power supply—just plug and play
• Measures the output voltage and current of USB ports and device operating currents or load voltages
• Compatible with all types of USB chargers, including PC USB ports, home chargers, and car chargers
• Suitable for a wide range of applications, including phones, electronics, and personal use
• Ideal for use in factories, laboratories, and by hobbyists

Package Includes:

• 1 x USB Charger Doctor (Voltmeter Ammeter)

Additional Information:

• Operating Voltage (VDC): 3.5 ~ 7
• Maximum Operating Current (A): 3
• Color: Blue
• Material: ABS
• Dimensions (mm):
  • Length: 53
  • Width: 20
  • Height: 15
• Weight (gm): 15
• Shipment Weight: 0.125 kg
• Shipment Dimensions (cm): 6 x 3 x 2

Note: Product images are for illustration purposes and may differ slightly from the actual product.

Return Policy Overview

At ROBODIUM™, we want you to be completely satisfied with your purchase. You may return most items within 7 days of delivery for a full refund or exchange.

Return Window

• Standard Returns: 7 days from delivery date for any reason, including if you simply changed your mind.
• Defective/Damaged Items: 7 days from delivery date for items received damaged or defective.
• Manufacturing Defects (Warranty): 15 days from delivery for manufacturing defects, unless a different warranty period is specified on the product page.

What Can Be Returned

Most items sold on ROBODIUM™ can be returned within the return window, including:

• Items you no longer need or changed your mind about
• Products received in damaged condition
• Items with manufacturing defects
• Wrong items received (item mismatch)
• Missing components inside the package

Return Conditions

To be eligible for a return, items must be:

• In their original, unused condition
• In the original packaging with all accessories, manuals, and free gifts (if any)
• Accompanied by proof of purchase

Note: Products damaged due to misuse, modification, static discharge, soldering, or improper handling may not be eligible for return.

How to Initiate a Return

1. Contact us via email at support@robodium.com or call +91 8123109966
2. Provide your order number and reason for return
3. Submit photos/videos of the item (especially for damaged/defective products)
4. Our team will review and approve your return request within 1-2 business days

Return Pickup Process

We arrange the return pickup for you - hassle-free returns similar to major e-commerce platforms.

• Once your return is approved, we will coordinate pickup from your location.
• Pack the product securely in its original packaging.
• Include a copy of the order confirmation or packing list.
• Keep the package ready - our logistics partner will collect it at the scheduled time.

Return Shipping Costs

• Defective, damaged, or wrong items: ROBODIUM™ covers all return shipping costs. No charges to you.
• Change of mind returns: A flat return shipping fee of ₹100 will be deducted from your refund amount.

Refund Process

• Refund Method: Refunds are processed to your original payment method.
• Processing Time: 5-7 business days after we receive and inspect the returned item.
• Refund Amount: Full purchase price minus any applicable return shipping fees.
• Orders canceled before shipping receive a full refund (minus up to 5% payment gateway charges, if applicable).

Replacements

• Once the returned item is inspected and approved, we ship the replacement at no additional cost.
• Replacement items are dispatched within 2 business days of receiving your return.
• If replacement is unavailable, we provide a full refund.

Warranty Terms

All products include a minimum 15-day warranty against manufacturing defects unless otherwise specified on the product page.

Warranty does not cover: misuse, soldering damage, modifications, physical damage, or incorrect electrical connections.

Order Cancellations

• Orders in Pending or Payment Verification status can be canceled for a full refund.
• Contact us immediately at support@robodium.com to cancel before shipping.
• Once an order is shipped, it cannot be canceled but can be returned after delivery.

Customer Service Commitment

• Email Response Time: Within 24 hours on business days
• Phone Support: Monday-Saturday, 10:00 AM - 6:00 PM IST
• Return Request Review: 1-2 business days
• Issue Resolution: Within 48 hours of verification