Product Description


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Product Overview

This is a BM550U Ultra Battery Tester , designed for comprehensive and convenient battery diagnostics across a wide range of vehicles and equipment.

Key Features

1. Wide Range of Applications

  • Tests 6V / 12V / 24V batteries.
  • Suitable for common models and equipment including:
    • Motorcycle
    • Car
    • Lawn Mower
    • Golf Car

2. Intimate Protection

  • Poor Contact Prompt: The display reacts when the test clip fails to clamp the positive and negative electrodes of the battery.
  • Polarity Reverse Protection: Protects the switching power supply from damage if input polarity is reversed.

3. Does Your Battery Need to Be Replaced?

  • With increasing onboard electrical appliances, battery capacity and quality demands are rising.
  • Symptoms indicating battery replacement may be needed:
    • Can not Start the Car
    • Unsteady Engine Idling
    • The Power System is not Working Properly
  • Common devices that strain your battery:
    • Driving Recorder
    • Car Refrigerator
    • Car Charger
    • Car Lighting

4. Dual Detection

  • Combines Battery Test + Waveform for easier, more convenient testing.
  • User Interface:
    1. Battery Test (Red = currently selected)
    2. Waveform (Gray = Unselected)
    3. Click or Hold Press to Add Value
    4. Get started and complete the test

Technical Specifications

  • Model: BM550U
  • Power Supply Voltage: 12V
  • Dimensions:
    • Length: 18.80 cm (187.9 mm)
    • Width: 8.40 cm (84 mm)
    • Height: 4.30 cm (43.2 mm)
This compact, user-friendly battery tester offers reliable diagnostics with smart protection features — ideal for both everyday drivers and professionals.
Let me know if you’d like this formatted for a product listing, brochure, or technical sheet!


1.We accept payment by any of the following methods: PayPal, Visa, Google pay, American express, Master card, Discover.
2. Payment it's better made within 5 days, Non-payment may result in an UPI (Unpaid Item), eBay will automatically close your account if you accumulate 4 UPI's total.
3. Immediate payment needs to be processed for items with Add to Cart option so that any promotional discounts can be applied to your order immediately.
All orders will be shipped out within 1-10 business days after payment is cleared. Most of orders will be shipped out at the same day if ordered before 9:00 AM PST(Pacific Standard Time) during business days.
All orders will be shipped out via FedEx, USPS or UPS express with a tracking number, which will take 2-6 business days for the delivery.
We only ship to Paypal confirmed address, please make sure that the address is correct before you check out.
- Returns are accepted within 30 days of receipt of item.
- Please contact us prior to return for information about how to handle returns.
- Returned items must be in the condition you received and in the original box.
- Refund will be processed once your return is inspected by our fulfillment center.
- We will issue a refund for the returned items accordingly.
- If the buyer has made an error in their purchase the buyer must be charged for return shipping.
If you have any questions or need installation instructions please contact us via eBay message.

If you are dissatisfied with the item, or the item's arrival room is damaged, please contact me in the eBay background, 

I will reply to your message as soon as possible (there is a time difference, no timely response, please understand) to solve the problem for you ! ! !

Payment
1.We accept payment by any of the following methods: PayPal, Visa, Google pay, American express, Master card, Discover.
2. Payment it's better made within 5 days, Non-payment may result in an UPI (Unpaid Item), eBay will automatically close your account if you accumulate 4 UPI's total.
3. Immediate payment needs to be processed for items with Add to Cart option so that any promotional discounts can be applied to your order immediately.
Shipping
All orders will be shipped out within 1-10 business days after payment is cleared. Most of orders will be shipped out at the same day if ordered before 9:00 AM PST(Pacific Standard Time) during business days.
All orders will be shipped out via FedEx, USPS or UPS express with a tracking number, which will take 2-6 business days for the delivery.
We only ship to Paypal confirmed address, please make sure that the address is correct before you check out.
Returns
- Returns are accepted within 30 days of receipt of item.
- Please contact us prior to return for information about how to handle returns.
- Returned items must be in the condition you received and in the original box.
- Refund will be processed once your return is inspected by our fulfillment center.
- We will issue a refund for the returned items accordingly.
- If the buyer has made an error in their purchase the buyer must be charged for return shipping.
Contact Us
If you have any questions or need installation instructions please contact us via eBay message.

If you are dissatisfied with the item, or the item's arrival room is damaged, please contact me in the eBay background, 

I will reply to your message as soon as possible (there is a time difference, no timely response, please understand) to solve the problem for you ! ! !

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On 18-May-2026 at 04:55:40 BST, seller added the following information:

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