OPTIMATE PERFORMANCE CHARGING SOLUTIONS
Shop OptiMate battery chargers and maintainers for Mercedes-Benz cars, AMG performance vehicles, roadsters and classics. Whether your SL is stored during colder months or your AMG spends time in the garage between outings, explore charging solutions for maintaining the battery between drives.
Compare options for compatible 12V lead-acid, AGM and LiFePO4 batteries, with automatic charging, battery testing and long-term maintenance. Selected models also provide deep-discharge recovery. Choose your Mercedes-Benz battery charger according to the installed battery’s chemistry and capacity, and follow your vehicle’s charging and connection guidance when setting up a maintainer for regular use or seasonal storage.
High-performance battery chargers
Choose an OptiMate charger based on battery chemistry, voltage and how the vehicle is used. Compare dedicated 12V lead-acid and AGM chargers, lithium LFP models, multi-chemistry Select chargers and FASTCHARGE solutions for 12V or 16V racing batteries.
For 12V flooded lead-acid, EFB and sealed AGM batteries in Mercedes-Benz vehicles.
2 chargers
For 12.8V/13.2V 4-cell and 16V 5-cell LiFePO4 batteries used in Mercedes-Benz vehicles.
3 chargers
For vehicles and workshops servicing both 12V lead-acid or AGM and 12.8V/13.2V LiFePO4 batteries.
1 charger
For Mercedes-Benzs using 12V or 16V Pb-AGM and LiFePO4 batteries.
1 charger
Complete your charging setup with permanent battery leads, AUTO/DIN and OBDII adapters, battery monitors, SAE extensions and MagCode connections for convenient access to hard-to-reach batteries.
14 accessories
Compare OptiMate high-performance chargers by battery chemistry, voltage, charging output, intended use and specialized charging features.
| Model | Voltage / output | Battery type | Best application | Key advantage |
|---|---|---|---|---|
| OptiMate 6 Ampmatic (TM361) | 12V, 6A | Pb / EFB / AGM | Supercars and sports cars with 12V lead-acid batteries | Automatic Ampmatic charging with no mode selection |
| OptiMate 7 Select (TM251v3) | 12V, 10A | Pb / EFB / AGM | Higher-capacity and high-performance AGM batteries | 14.4V / 14.7V selection plus 13.6V power supply |
| OptiMate Lithium LFP 4s6A (TM391) | 12.8V / 13.2V, 6A | 4s LiFePO4 | Performance vehicles with 3–72Ah lithium batteries | 0.5V recovery, BMS reset and TUNE support |
| OptiMate Lithium LFP 4s10A (TM275) | 12.8V / 13.2V, 10A | 4s LiFePO4 | Larger performance lithium batteries and faster recharging | Ampmatic charging, 0.5V recovery and TUNE mode |
| OptiMate Lithium LFP Select (TM271) | 12.8V / 13.2V 9.5A; 16V 7.5A | 4s / 5s LiFePO4 | Performance and race cars using 12V or 16V lithium | Selectable voltage with automatic BMS reset |
| OptiMate 6 Select v2 (TM371v2) | 12V / 12.8V, 6A | Pb / EFB / AGM / LiFePO4 | High Performance AGM and Lithium batteries in any vehicles | Three battery modes plus 13.6V Service mode |
| OptiMate G10 (TM651) | 12V 10A / 16V 8A | Pb-AGM / LiFePO4 | Race cars, competition batteries and track preparation | FASTCHARGE plus selectable DIAGNOSTIC mode |
Choose the situation that best matches how your vehicle is driven, stored or prepared.
Supercars and sports cars often combine powerful starting requirements with advanced onboard electronics and long periods between drives. Match the charger to the installed battery's voltage and chemistry, then use automatic maintenance to keep the battery ready without applying continuous uncontrolled charging.
Race cars may receive limited alternator output at low speed or use a total-loss electrical system with no alternator. Begin each session with a fully charged battery and choose a racing charger that matches the 12V or 16V system and its AGM or LiFePO4 chemistry.
Collector and seasonal vehicles may remain parked for weeks or months while alarms, trackers and other electronics draw power. An OptiMate with 24/7 maintenance monitors the battery after charging and provides additional maintenance only when the battery needs it.
Race teams and performance workshops may service several battery chemistries and voltages. OptiMate Select models simplify mixed lead-acid and lithium work, while compatible power-supply, Service and TUNE modes can support vehicle setup, troubleshooting and ECU programming with the engine off.
Start with the battery label and confirm its nominal voltage, chemistry and capacity. Then choose the required charging speed and whether you need maintenance, low-voltage recovery, BMS reset, fixed-voltage support or a dedicated racing program.
Yes. Compatible OptiMate chargers are designed to complete charging and then provide automatic long-term maintenance. Always choose a program that matches the installed battery's voltage and chemistry, particularly when maintaining a LiFePO4 battery.
Use an OptiMate charger with a LiFePO4 program matching the battery's nominal voltage. Do not use a lead-acid-only charging program unless the battery manufacturer explicitly approves it.
Selected OptiMate chargers can begin recovery from batteries discharged as low as 0.5V, and compatible lithium models can reset a protective BMS. Recovery still depends on battery condition and cannot reverse permanent internal damage.
The OptiMate G10 supports compatible 16V AGM and 16V LiFePO4 racing batteries, while OptiMate Lithium LFP Select supports 16V LiFePO4 batteries. Confirm the exact battery chemistry and select the corresponding 16V program before connecting.
On the OptiMate G10, FASTCHARGE prioritizes maximum charging output for race preparation. The selectable DIAGNOSTIC program is intended for deeply discharged or smaller batteries and uses Ampmatic control to adjust current according to battery condition and size.
Selected OptiMate models provide fixed-voltage power-supply, Service or TUNE modes for battery support during troubleshooting, vehicle setup or ECU programming with the engine off. Confirm the required support voltage and follow the vehicle and charger instructions.
Send TecMate USA your battery voltage, chemistry, capacity and vehicle use, and we will help you compare compatible OptiMate chargers.
