Gaqqee BT173 Digital Battery Tester – AA AAA 18650 9V
Gaqqee BT173 Digital Battery Tester – AA AAA 18650 9V
Gaqqee BT173 Digital Battery Tester & Voltage Meter
Never wonder whether your batteries are dead or still going strong. The Gaqqee BT173 Battery Tester gives you an instant digital readout of battery capacity and voltage — no guesswork, no wasted batteries, no extra power source needed. Compact enough to slip into a drawer or toolkit, it's the one gadget every home needs.
Key Features
- Dual Display Screen: Simultaneously shows a precise numerical voltage value AND a battery level bar indicator, so battery status is clear at a single glance.
- No External Power Required: The tester draws its operating power directly from the battery being tested — completely self-powered, energy-efficient, and eco-friendly.
- Wide Battery Compatibility: Tests AA, AAA, C, and D cells; 9V, 12V, and 23V batteries; 1.55V button cells; and lithium cells including 18650, 21700, 26650, 14500, 10440, and 16340.
- Dedicated 9V Port: A separate snap-style port at the base provides fast, secure testing of 9V batteries with clearly marked positive and negative terminals.
- Pocket-Friendly Compact Design: At just 105 × 77 × 14.2 mm and made from durable ABS, it fits comfortably in your hand or slips into a pocket, bag, or toolbox.
- CE & RoHS Certified: Meets international safety and environmental standards for your peace of mind.
Specifications
| Model | BT173 |
| Display | Digital readout (numerical + bar indicator) |
| Material | ABS |
| Dimensions | 105 × 77 × 14.2 mm |
| Power Supply | No external power required (powered by battery under test) |
| Compatible Batteries | AA / AAA / C / D, 9V / 12V / 23V, 1.55V button cells, 18650 / 21700 / 26650 / 14500 / 10440 / 16340 lithium cells |
| Certification | CE, RoHS |
| Country of Origin | Made in Mainland China |
What's in the Box
- Digital Battery Tester × 1
- Instruction Manual × 1
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Frequently Asked Questions
Q: Does the Gaqqee BT173 battery tester require its own batteries to operate?
A: No — the BT173 is completely self-powered. It draws the small amount of energy it needs directly from the battery being tested, so you never need to install or replace separate batteries in the tester itself.
Q: Which battery types are compatible with the BT173 battery capacity checker?
A: The BT173 supports a wide range of batteries including AA, AAA, C, and D alkaline/NiMH cells; 9V, 12V, and 23V batteries; 1.55V button cells; and popular lithium rechargeable formats such as 18650, 21700, 26650, 14500, 10440, and 16340.
Q: How do I test a 9V battery with the BT173?
A: Simply press the 9V battery onto the dedicated snap-style port located at the base of the tester. The clearly marked positive and negative terminals ensure a secure connection for an instant digital reading.
Q: What does the dual display on the BT173 show?
A: The dual display simultaneously shows a numerical voltage value for precise measurement and a visual battery level bar indicator, making it easy to tell at a glance whether a battery is fully charged, partially used, or depleted.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.