To ensure compatibility, your replacement must match the following critical parameters of the Mazda 185Q-W2-G10. If you have a failed unit, compare it to the list below:
| Specification | Detail | |---------------|---------| | Lamp Type | Quartz Halogen (Tungsten-Halogen) | | Nominal Voltage | 12V – 24V DC (Verify with meter; common is 15V or 22.8V) | | Wattage | 180W – 185W (Most common) | | Luminous Flux | Approx. 4,000 – 5,000 lumens (depending on voltage) | | Color Temperature | 3,200K – 3,400K (Warm white, ideal for optical contrast) | | Average Rated Life | 50 – 200 hours (High-output version) | | Base Type | G10 (Bi-pin, 10 mm spacing) | | Filament Type | C-8 (Coaxial, for even light distribution) | | Cooling Requirement | Forced air (fan cooling) mandatory | | Orientation | Horizontal ±15° (unless marked otherwise) |
Important: Many users confuse the "W2" code with a voltage rating. In Toshiba/Mazda’s naming convention, "W2" dictates the pinch seal and filament support structure. Do not substitute based solely on voltage—pinching the wrong bulb can shatter the quartz envelope.
The G10 spec requires a Deutsch DT04-2P mating connector.
Inverted metallurgical microscopes and wafer inspection tools rely on this lamp for measuring reflectivity and identifying surface defects on semiconductors.
Q: Can I use a Mazda 185Q-W2-G10 in a household lamp? A: No. This is a specialty lamp requiring a specific ballast or low-voltage DC supply. Connecting to 120V AC will cause an immediate explosive failure.
Q: My device uses a Mazda 185Q-W2-G10, but I found a 200W lamp with the same base. Can I upgrade? A: Absolutely not. Even a 10% wattage increase will melt internal reflectors, damage the cooling system, and void any safety certifications.
Q: Why is my new lamp dimmer than the old one? A: Check the voltage rating. An 18V lamp running at 12V will be dim. Also, check the reflector inside your device—it may be coated with vaporized tungsten from the previous lamp’s end of life.
Q: Where can I find a datasheet? A: Since Toshiba discontinued this line, datasheets are rare. Archive.org may have cached technical bulletins, or contact a specialist like BULBTRONICS or Don’s Bulbs.
Mazda 185Q‑W2‑G10 — Overview and key details
The Mazda 185Q‑W2‑G10 is a factory equipment code that appears in service literature and parts catalogs referring to a specific ignition coil/wiring or engine management component used on certain Mazda small-displacement petrol engines (commonly found in 1990s–2000s Mazda compact models). While not a widely advertised consumer model name, the code is used internally and by aftermarket suppliers to identify the exact replacement part matching OEM specifications.
What it denotes
Why it matters
How to verify fitment and source replacements
Common symptoms indicating replacement
Note: Because 185Q‑W2‑G10 is an internal/parts-catalog identifier rather than a consumer-facing model name, always confirm with vehicle-specific references before ordering. mazda 185q-w2-g10
Mazda 185Q-W2-G10 is the genuine OEM part number for the Q-85 specification battery
, specifically designed for Mazda vehicles equipped with the i-stop (Idle Stop-Start)
system. Unlike standard car batteries, this unit is built with EFB (Enhanced Flooded Battery)
technology to handle the frequent engine restarts required by modern fuel-saving systems. Essential Guide to the Mazda Q-85 (185Q-W2-G10) Battery 1. Why This Specific Part Matters i-stop Compatibility
: Mazda’s i-stop system is demanding; it requires a battery that can discharge and recharge rapidly without losing capacity. The genuine Mazda Q-85 battery is tuned for these precise cycles. EFB Technology
: This battery uses Enhanced Flooded Battery tech, which offers better charge acceptance and greater durability than a standard lead-acid battery.
: It is a direct "drop-in" replacement for many Mazda models, ensuring the hold-down brackets and terminals align perfectly without modification. RDrive.pro 2. Vehicle Compatibility
This battery is the standard factory spec for several popular models, particularly those in the RDrive.pro Mazda CX-5 (KE/KF series) Mazda3 / Axela (BM/BY/BP series) Mazda6 / Atenza (GJ/GL series) Mazda CX-3 (DK series) Mazda2 / Demio (DJ series) 3. Key Technical Specifications Standard Size Q-85 (corresponds to D23L dimensions) EFB (Enhanced Flooded Battery) Application Idle Stop-Start (ISS) vehicles Typically 24 months or 40,000 km (whichever comes first) 4. Pro-Tips for Maintenance & Replacement The "i-stop" Reset
: After replacing the battery with a new 185Q-W2-G10, you often need to perform an i-stop initialization
procedure. If you don't, the car may not recognize the new battery, and the fuel-saving stop-start feature will remain disabled. Avoid Standard Batteries
: Installing a regular non-EFB battery in an i-stop Mazda will likely lead to premature battery failure within 6–12 months because standard batteries cannot handle the high-frequency starting loads. Where to Buy
: You can find this genuine part at authorized Mazda dealerships or through specialized importers like Hyogo Parts or retailers like step-by-step instructions for resetting the i-stop system after a battery swap?
Mazda (MAZDA)Q-85 автомобиль аккумулятор ... - Real Yahoo
185Q-W2-G10 refers specifically to a Mazda Genuine Q-85 Car Battery
. This part is a specialized power source designed for Mazda vehicles equipped with the i-stop (Idling Stop) Yahoo!ショッピング Key Technical Details Battery Type: It is typically an EFB (Enhanced Flooded Battery) To ensure compatibility, your replacement must match the
, which is specifically engineered to handle the high cycling requirements of start-stop systems. Standard Size: Often corresponds to the
standard (JIS code), which is a high-performance version of the common D23L battery size. Core Function:
It provides superior recharge efficiency and starting power to support frequent engine restarts while the vehicle is idling. Yahoo!ショッピング Essential Maintenance & Replacement Notes Computer Learning:
After replacing this battery, the vehicle's onboard computer generally requires a reset or "learning" procedure
to recognize the new battery and manage the i-stop system correctly. Compatibility: This genuine part is frequently used in models like the Mazda CX-3, CX-5, CX-8, and Mazda 3 Purchasing:
While dealerships stock this part, it is often available through specialized retailers like HYOGOPARTS at different price points. Yahoo!ショッピング
If you are planning to replace the battery yourself, you may need a specialized OBD-II tool to perform the battery registration. Are you looking for the specific reset procedure for a particular Mazda model, or do you need help finding compatible alternatives Q85 - ISS Active EFB Stop-Start Stop/Start Car Batteries
* Exceptional starting power. * Maximum service life. * Superior stop/start cycling performance. * Superior recharge efficiency. www.centurybatteries.co.nz Q85 - ISS Active EFB Stop-Start Stop/Start Car Batteries
* Exceptional starting power. * Maximum service life. * Superior stop/start cycling performance. * Superior recharge efficiency. www.centurybatteries.co.nz
The 185Q-W2-G10 is a specific Mazda genuine part number for a Q-85 class battery, primarily designed for vehicles equipped with the i-stop (idling stop) system. Understanding the Mazda Q-85 (185Q-W2-G10) Battery
This battery is engineered to meet the high-demand cycles of Mazda's fuel-saving start-stop technology. Unlike standard lead-acid batteries, the 185Q-W2-G10 is typically an Enhanced Flooded Battery (EFB), which allows for frequent discharging and rapid recharging without the rapid degradation seen in traditional units. Key Specifications and Use Part Number: 185Q-W2-G10. Battery Type: EFB (Enhanced Flooded Battery) / Q-85.
Application: Essential for Mazda models with i-stop, such as the CX-3, CX-5, and Mazda3.
Interchangeability: It is often cross-referenced with other Mazda part numbers like PE1T-18-520 9B and PE1R-18-520. Maintenance and Replacement Tips
Strict Requirements: Vehicles with i-stop generally require at least an EFB-grade battery. Using a standard "wet" battery can cause the i-stop system to fail and significantly shorten the battery's lifespan.
Installation Caution: When replacing, always disconnect the negative wire first and reconnect it last. Some owners report that the i-stop system may require a "reset" at a dealership or several days of driving before it becomes fully active after a battery swap. Why it matters
Procurement: These genuine batteries are often available through specialized retailers like HYOGOPARTS.
The Mazda 185Q-W2-G10 is a genuine OEM (Original Equipment Manufacturer) car battery. Specifically, it is a high-performance Q-85 standard battery designed for Mazda vehicles equipped with i-stop (idling stop-start) technology. Performance and Compatibility
Target Vehicles: It is the standard replacement part for several modern Mazda models, including the CX-3 (DK series), Axela/Mazda3 (BM/BY series), Demio/Mazda2 (DJ series), Atenza/Mazda6 (GJ series), and CX-5 (KF series).
Chemistry: This is an Enhanced Flooded Battery (EFB). EFBs are specifically engineered to handle the frequent engine restarts required by stop-start systems, offering better cyclic durability than standard lead-acid batteries.
Key Specs: It typically operates at 12V and provides approximately 550 Cold Cranking Amps (CCA), ensuring reliable starts even in cold weather. Pros and Cons Pros:
Reliability: Being a genuine part, it provides the precise power delivery and fitment expected by your car's ECU.
Durability: Designed for high-frequency starting, which prevents the premature wear often seen when using non-stop-start batteries in i-stop vehicles.
Warranty: In many markets, it comes with a 24-month or 40,000 km guarantee. Cons:
Cost: Genuine OEM batteries like the 185Q-W2-G10 are generally more expensive than third-party alternatives.
Weight: At roughly 17kg, it is quite heavy, though typical for its class. Verdict
If your Mazda uses i-stop technology, the 185Q-W2-G10 is a safe and high-quality choice that maintains the vehicle’s intended fuel efficiency and electrical health. While you can find cheaper aftermarket Q-85 batteries, the genuine part ensures zero compatibility issues with Mazda's sensitive battery management sensors.
However, based on the structure of the code, this is highly likely to be a component or industrial part number from a supplier, possibly for a lamp (light bulb), a sensor, or an electrical component, where "Mazda" refers to the Mazda (lighting) brand (formerly part of Toshiba), not the car manufacturer.
Here is the most likely identification and technical information:
Due to counterfeiting (especially of the "G10" 24V coil), only purchase from:
Avoid listings on generic marketplaces showing a brand new 185Q-W2-G10 for under $200; the average factory price is $895 - $1,450 USD.
