MULTI-MODEL – i-ELOOP BATTERY SERVICE INFORMATION
APPLICABLE MODEL(S)/VINS
2014-2016 Mazda3 vehicles equipped with i-ELOOP
2014-2016 Mazda6 vehicles equipped with i-ELOOP
This service information provides basic Q-85/T-110 battery handling procedures. Complete service information can be found in MS3 online or Workshop Manual (section 13-17).
Q85/T110 BATTERY MAINTENANCE
Q85/T110 BATTERY TEST AND BATTERY CHARGING
- Remove the battery from the vehicle.
CAUTION: Do not charge the battery in the vehicle. Vehicle electrical system damage may occur.
- Remove the battery filler caps.
- Adjust battery fluid level if needed using distilled water.
- Connect the GR8 Battery Management System using the large cables.
- From the MAIN MENU, select Battery Test or Diagnostic.
 | or |
 |
- From the LOCATION screen, select OUT OF VEHICLE.
- From the BATTERY TYPE screen, select I-ELOOP.
- From the TEST USING screen, select Q-85.
 |
 |
| Battery Test Results | |
| Battery Charging
When test is complete, battery charging will automatically begin if needed. This may take several hours to complete. |
 |
| Battery Good |
 |
| Bad Cell |
 |
| State of Health |
 |
| Warranty Code |
 |
Q85/T110 BATTERY VOLTAGE MEASUREMENT
Battery voltage can only be measured on a battery that has not been recently charged. If the battery was recently charged, wait 6 hours or more before checking the battery voltage.
- Is the battery voltage 12.4 volts or higher?
Q85/T110 BATTERY SPECIFIC GRAVITY MEASUREMENT
Battery condition can be ascertained using this method; however, the preferred method is to use the GR8 Battery Management System. Refer to Q85/T110 BATTERY TEST AND BATTERY CHARGING.
- Mix the electrolyte solution on all 6 cells by using a siphon to suction the electrolyte from the battery and then put it back in.
- Use a scope type specific gravity battery meter (refractometer) to measure all six cells.
- Is the cell with lowest electrolyte specific gravity 1.25 or more?
- – Yes – The battery is fully charged.
- – No – Go to next step.
- Is the cell with lowest electrolyte specific gravity less than 1.17?
- – Yes – The battery may be faulty. If however, the battery is under warranty, you must use the Midtronics GR-8 tester as it uses a more accurate method of testing. Proceed to Q85/Q110 BATTERY TEST AND BATTERY CHARGING to accurately test the battery. If the Midtronics GR-8 tester fails the battery it will generate a battery failure code for warranty claim submission.
- – No – The battery requires charging. Proceed to Q85/T110 BATTERY TEST AND BATTERY CHARGING.
Q85/T110 BATTERY INSPECTION WITHOUT GR-8
If the GR8 Battery Management System is not available to test a Q85/T110 battery, refer to MS3 online or Workshop Manual section 01-17.
Q85/T110 BATTERY CHARGING WITHOUT GR-8
If the GR8 Battery Management System is not available to charge a Q85/T110 battery, refer to MS3 online or Workshop Manual section 01-17.
Q85/T110 BATTERY JUMP START
If a jump start is necessary, do not remove the jumper cables or drive the vehicle until the instrument cluster Multi-Information Display (Mazda6) or touchscreen (Mazda3) warning message i-ELOOP charging is no longer displayed. This process takes about 3 minutes to complete.
Q85/T110 NEGATIVE BATTERY CABLE DISCONNECT
- Record audio memory.
- Switch the ignition off.
- Disconnect the current sensor connector (A) from the current sensor (B).
- Disconnect the negative battery cable terminal (C).
Q85/T110 NEGATIVE BATTERY CABLE CONNECTION
- Connect the negative battery cable terminal (C).
- Connect the current sensor connector (A) to the current sensor (B).
- Switch the ignition ON.
- Perform the power window system initial setting.
- Perform the sunroof system initial setting (if equipped).
- Set the clock.
- Set audio memory.
- Perform the tire pressure monitoring system (TPMS) initialization.
Q85/T110 OPERATION REQUIRED AFTER BATTERY REPLACEMENT
When replacing the battery, perform the following procedure. When replacing the PCM simultaneously, perform the PCM configuration first.
- Switch the ignition ON (engine off).
- Shift the selector lever to the N position.
- Perform the following work with the brake pedal depressed.
- Depress the accelerator pedal for 5 s or more.
- Verify that the charging system warning light and the master warning light flash.
- Depress and release the accelerator pedal 3 times.
- Verify that the charging system warning light illuminates and the master warning light turns off.
- Switch the ignition OFF and disconnect the negative battery cable. Refer to Q85/T110 NEGATIVE BATTERY CABLE DISCONNECT.
- Connect the negative battery cable. Refer to Q85/T110 NEGATIVE BATTERY CABLE CONNECTION.
SPECIAL SERVICE TOOL (SST) INFORMATION
| Part Number | Description | Qty. | Image |
| MTRGR81291KT | GR-8 Battery Management System | 1 |
 |
SaleBestseller No. 1
YONHAN Battery Charger 20A 12V/24V LiFePO4 Lead Acid Fully Automatic Battery Maintainer, Car Battery Trickle Charger Automotive w/Repair, Winter Mode, for AGM, STD, Gel, Deep Cycle Batteries
- [20A Suitable for LiFePO4 Lead-acid Battery Charger] 12V 20 Amp, 24V 10Amp 7-stage quick battery charger, Designed to charge, maintain and repair all 12-volt and 24-volt lead-acid automotive, LiFePO4, marine and deep-cycle batteries including AGM, GEL, EFB, SLA,Flooded(WET), Calcium in cars, truck, SUVs, ATV, motorcycle, snowmobile, lawn mower, boat, tractor, forklift, golf cart, etc. which is much faster than 10A or 6A automatic chargers. Note: This isn't a jump starter; it needs to be plugged into an outlet to work.
- [Winter Holiday Battery Trickle Charger]The car battery trickle charger features winter and summer modes with smart control to adapt to temperature changes and adjust the charging rate, preventing battery drain. It offers multiple protections, including reverse protection, a cooling system, overcurrent protection, fireproof materials, overcharge, and short circuit protection. These ensure safe charging, making it perfect for maintaining batteries over winter or during holidays.
- [High-efficiency Pulse Repair] Built-in advanced battery REPAIR mode to help recover old/idle batteries and extend battery life. If the battery cannot be charged, please use repair mode. The high-frequency and low-frequency pulse technology has good repair and activation effects, Automatically enters trickle/float charging mode after fully charged, keep maintaining your batteries during this winter and more, leave batteries for holiday months and still brand new when you back. pls Note: It can not repair a totally dead battery.
- [Brighter Screen Visualized Charging] Extra large LCD screen not only clear to see under the sunlight but also displays the charging and battery status; charge voltage and current, inside temperature, charge percentage, summer mode, winter mode, etc.
- Note: 1. Our product is a car battery charger that requires connection to a power outlet for operation 2. Before use, please carefully read the product manual and select the appropriate charging mode for your battery. 3. This car battery charger cannot charge batteries voltage below 0.3V or batteries that are already damaged. Not compatible with lithium batteries 4. Always check your battery's voltage before attempting to charge. 5. This battery charger is designed for temporary charging only and is not intended for permanent connection. Always disconnect the clamps from the battery after charging is complete.
SaleBestseller No. 2
TowerTop 2/10/25 Amp 12V Smart Car Battery Charger, Fully Automatic Battery Maintainer with Engine Start, Auto Desulfator, Battery Repair, Winter Mode, for AGM, STD, Gel, Deep Cycle Batteries
- Efficient, Energy-Saving, and Fast Charging: The TowerTop 12v battery charger offers 4 adjustable current settings (2A/10A/25A/AUTO) to meet your diverse needs. With a max charging current of 25A, you can fully charge a 100Ah battery in under 3.5 hours. Achieving an 85% charging efficiency (industry average 75%), this battery chargers is more efficient, increasing charging speed by 1640% compared to 2A car battery charger. Not only is it energy-efficient, but it also saves you a lot of wait time
- Fully Automatic Charging for Convenience and Safety: This 12 volt battery charger automatically detects battery status and starts charging automatically within 30 seconds if you forget to press Start. After a full charge, it enters pulse repair mode, turns off the screen to save energy, and maintains a safe voltage for long-term storage. If voltage drops, it restores full power. The smart battery charger also remembers your last settings, ensuring seamless operation even after a power outage
- All-in-One Compatible Design: Designed for 12V sealed lead-acid batteries in cars, boats, RVs, power sports, and deep-cycle batteries, including 12V STD, AGM, GEL, Wet, MF, EFB, calcium and deep-cycle batteries
- HD LCD Screen and 8-Stage Intelligent Charging: With true 8-stage smart charging (desulfurization, soft start, bulk charge, absorption, analysis, repair, float, and pulse maintenance), it optimizes battery life and repairs batteries without overcharging or damaging them. The HD LCD screen allows you to view the charging stage and parameters at any time rather than leaving you guessing, keeping you informed of the charging status
- Battery Repair: Independent desulfurization and repair buttons allow you to manually desulfurize and repair your battery to restore lost battery performance, helping to revive old/idle batteries and extend battery life. If your battery cannot be charged, you can try the "repair" mode to fix it. Note: It cannot repair completely drained batteries
Bestseller No. 3
NOCO GENIUS1: 1A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – for Lead-Acid & Lithium Batteries
- MEET THE GENIUS1 — Similar to our G750, just better. It's 35% smaller and delivers over 35% more power. It's the all-in-one charging solution - battery charger, battery maintainer, trickle charger, plus desulfator.
- DO MORE WITH GENIUS — Designed for 6-volt and 12-volt lead-acid (AGM, Gel, SLA, VRLA) and lithium-ion (LiFePO4) batteries, including flooded, maintenance-free, deep-cycle, marine and powersport batteries.
- ENJOY PRECISION CHARGING — An integrated thermal sensor dynamically adjusts the charge based on ambient temperature, preventing overcharging in hot weather and undercharging in cold, ensuring optimal battery performance.
- CHARGE DEAD BATTERIES — Charge batteries from as low as 1 volt, or use Force Mode to manually charge completely dead batteries down to zero volts. Perfect for recovering deeply discharged or neglected batteries.
- BEYOND MAINTENANCE — Keep your battery fully charged without worrying about overcharging. Our smart charger constantly monitors the battery, allowing you to leave it connected safely - indefinitely - for worry-free maintenance.
Bestseller No. 4
Schumacher Electric 50A 12V Car Battery Charger, Engine Starter & Maintainer - Fully Automatic Battery Charger for Cars, Trucks & RVs - 6A Charge/ 2A Maintain & 10A Boost Modes - SC1361
- Versatile Charging Power - Delivers 6A charge and 2A maintain mode, 50A engine start, and 10A quick boost for reliable 12V battery support in cars, trucks, RVs, and SUVs.
- Automatic Multi-Stage Charging - Microprocessor-controlled technology allows this 12V battery charger to automatically adjust its amperage and switch to float-mode for long-term battery maintenance.
- Built-In Safety Features - This automatic battery charger, maintainer and engine starter uses reverse hook-up protection and intuitive LED indicators to alert users of improper connections and monitor charging progress.
- Rugged and Energy Efficient Design - Features durable steel housing and DOE-compliant energy efficiency, making it ideal for garage use.
- Trust in Schumacher - As a trusted name in car accessories, we proudly back every car battery charger, jump pack and maintainer we release. Our products are designed to meet the needs of both professional and consumer users.
SaleBestseller No. 5
NEXPEAK 15A Battery Charger, Trickle Charger 12V/24V Car Battery Charger 9-Stage Smart LiFePO4 Charger Battery Maintainer w/Overcharge Protection Pulse Repair for Car Truck Motorcycle Lawn Mower
- 【LEAD-ACID & LiFePO4 BATTERY CHARGER】12V 15-Amp and 24V 8-Amp 9-stage quick battery charger, charging speed is much faster than 10-Amp or other automotive chargers. Charge or repair all 12-volt and 24volt LiFePO4 or lead-acid automotive, marine and deep-cycle batteries including AGM, GEL, SLA, Flooded in cars, trucks, SUVs, motorcycles, lawnmowers, boat marine, etc. Perfect household tool and present for Xmas and daily use! NOTE: Charging current over 15A could lead to overcharge and damage the internal chemicals, choosing the appropriate battery charger is essential.
- 【UPGRADED 1.75AMP BATTERY TRICKLE CHARGER】The first battery trickle charger that adopts 9-stage charging process to extend the battery's cycle time, besides 1.75Amp float trickle charger is much safer and more efficient. Specially designed trickle charge mode(TKL) will automatically enters trickle/float charging mode after fully charged, keep maintaining your batteries during this winter and holidays, leave batteries for months and stay charged when you back home. NEW REPLACEMENT AVAILABLE FOR ANY QUALITY ISSUE.
- 【BRIGHTER COLOR SCREEN VISUALIZED CHARGING】 Extra large LCD color screen not only clear to see under the sunlight but also displays the charging status including the voltage and current, inside temperature(℉), charge percentage, summer mode, winter mode, etc. The lengthened 8.9ft charging cord (from clips to ac plug) is more convenient to use.
- 【OVERALL CHARGING PROTECTIONS】Smart control, temp compensation in hot climates and under-charging in cold climates, reverse protection, cooling system, overcurrent protection, fireproof material, overcharge protection, short circuit protection. Battery trickle charger with multiple protections ensures the safety charging at anytime anywhere. No worries!
- 【HIGH-EFFICIENCY PULSE REPAIR EXTEND BATTERY CYCLE LIFE】Automatically detects battery sulfation and acid stratification, takes the newest pulse repair function to restore lost battery performance for stronger engine starts and extend battery cycle time. Note: can not activate or charge totally dead(0V) batteries.
Last update on 2026-07-03 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.
Would appreciate any information you can share wrt i -eloop battery system in my 2015 Mazda 6 SkyActiv. This is crazy that there is no English words on the battery, can’t seem to find a replacement or anyone who can explain the Display: Battery Management System Inspection Required.
Car struggles to start but does start. Standing voltage 12.7, Charging Voltage 14.0
Plates covered with electrolyte. Dealership states test equipment to check i-eloop Out Of Service. Also Understand that Mazda has discontinued after 2016.Need help
Thank you
Should be an Q85/T110 Battery.
https://www.centurybatteries.com.au/resources/battery-finderhttp://mazda.oemdtc.com/product/battery/q85/info
Yes send me all the information on the I-eloop battery system so I can inform my self on the system and how it works. thanks