Your Mercedes battery dies after two weeks of sitting, and the dealer wants hundreds to replace it. I have been there. After comparing eight smart chargers, AGM battery maintainers, and trickle chargers side by side, I put together this 2026 guide to the best car battery chargers for Mercedes owners.
Modern Mercedes-Benz vehicles use AGM (Absorbent Glass Mat) batteries and sensitive onboard electronics, so a regular trickle charger can shorten battery life or trigger dashboard warnings like SOS NOT CONNECTED. The right charger keeps your W205 C-Class, W213 E-Class, or AMG healthy through winter storage, work-from-home schedules, and weekend garage-queen parking. If you want a broader look at non-brand-specific options, our smart battery charger roundup covers them in depth.
Here is the quick answer before we dive into reviews: Mercedes uses CTEK as its OEM trickle charger (rebranded), so the CTEK MXS 5.0 is the closest factory match. NOCO, Schumacher, and Battery Tender are the strongest aftermarket picks for daily-driver and storage use.
Top 3 Picks for Best Car Battery Chargers for Mercedes in 2026
CTEK MXS 5.0
- OEM Mercedes rebadge
- 8-step automatic
- AGM-specific mode
- IP65 weatherproof
- set-and-forget float mode
Battery Tender Plus 12V
- 10-year warranty
- 4-step charging
- quick disconnect harness
- spark-proof
- set-and-forget maintenance
NOCO GENIUS1 1A
- Charges from 1V
- Force Mode for dead batteries
- thermal sensor
- indefinite safe connection
- 63k reviews
Best Car Battery Chargers for Mercedes in 2026
| Product | Specs | Action |
|---|---|---|
| CTEK MXS 5.0 |
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| Battery Tender Plus 12V |
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 Schumacher SC1280 |
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| NOCO GENIUS1 |
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 MOTOPOWER MP00205A |
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 TowerTop 2/10/25A |
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 OPTIMA Digital 400+ |
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 Mercedes-Benz OEM 5A |
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1. CTEK MXS 5.0 – OEM Mercedes Trickle Charger Rebadge
CTEK – 40-206 MXS 5.0 Fully Automatic 4.3 amp Battery Charger and Maintainer 12V
8-step automatic
4.3A output
IP65 weatherproof
AGM-specific mode
Recondition function
Pros
- Mercedes OEM rebadge confirmed by MBWorld forums
- 8-step automatic charging with dedicated AGM mode
- IP65 splash and dust proof for outdoor use
- Set-and-forget float/pulse charging safe for months
- Recondition mode revives weak batteries
- Plug and play - battery stays connected during use
Cons
- AGM mode must be manually selected
- Sits at the higher end of the price spectrum
The CTEK MXS 5.0 is what Mercedes-Benz literally ships as its factory trickle charger, just with a Mercedes logo on the front. Forum user Klimfilt on MBWorld confirmed: “Mercedes is using [CTEK MXS 5.0] by OEM charger, but only with changed brand in front of it.” That OEM relationship matters because the MXS 5.0 has a dedicated AGM charging profile that matches the absorbed glass mat batteries Mercedes installs at the factory.
I have used the MXS 5.0 on a W213 E-Class for two winters. It brought a deeply drained battery back from below 11V to a full charge overnight, then dropped silently into float mode for the rest of the season. The IP65 weatherproof case lived outside under a car cover through rain and snow without any issue. Spark-proof clamps and reverse polarity protection mean I never worried about frying the sensitive SAM modules.
The 8-step charging program (desulfation, soft start, bulk, absorption, analysis, recondition, float, pulse) is more sophisticated than the 4-step program in cheaper chargers. For a Mercedes with an AGM battery, that extra analysis step matters: it detects sulfation buildup and can recover batteries that a basic maintainer would give up on.
One quirk worth flagging: the AGM mode is not auto-detected. You have to press the mode button to cycle to the snowflake/AGM icon before connecting. Forget this and the charger runs in standard lead-acid mode, which is not ideal for an AGM Mercedes battery.
When the CTEK MXS 5.0 is the right pick
If you drive a W213 E-Class, W205 C-Class, or any modern Mercedes with an AGM battery and you want the exact OEM-recommended charging profile, this is the one. It is also the safest long-term storage maintainer for owners who garage their car for months at a time. I recommend pairing it with the optional CTEK Comfort Indicator eyelet harness so you can plug in without opening the hood.
When to skip the CTEK MXS 5.0
If you only need an emergency jump-start or a low-amp trickle charger for a motorcycle battery, the CTEK MXS 5.0 is overkill. The premium price makes less sense for casual use on a single non-Mercedes vehicle.
2. Battery Tender Plus 12V 1.25A – Long-Term Storage Champion
Battery Tender Plus 12V 1.25 AMP Car & Motorcycle Battery Charger and Maintainer, Float Charge for Automotive, and ATVs – Smarter Than a Trickle Charger
1.25A output
4-step program
10-year warranty
Quick disconnect
12V only
Pros
- 10-year warranty longest in the category
- 4-step program safer than basic trickle
- Quick disconnect harness for permanent installs
- Two-color LED charge status is easy to read
- Set-and-forget maintenance for stored seasonal vehicles
- Spark-proof and reverse polarity protected
Cons
- Power cord is short and needs an extension in most setups
- Designed for 120V input only - not a universal-voltage unit
- Alligator clips add height that can interfere with hood closing
The Battery Tender Plus is the workhorse that Mercedes Club UK and MBWorld forum members keep recommending year after year. Forum user ua549 on MBWorld noted: “Battery maintainers are safe and can be left connected over extended periods of time (months). I’ve used a Battery Tender Plus for several years without any problems.” With 21,626 reviews averaging 4.7 stars, that real-world track record is hard to argue with.
I installed one on a classic Mercedes that sits for 6 months every winter. The 4-step program (initialization, bulk, absorption, float) holds the battery at a perfect 13.2V without overcharging, and the quick disconnect harness means I plug in through a small hole in the grille without popping the hood. The 10-year warranty is the longest in the category and signals real brand confidence.
AGM compatibility is solid, which matters because most Mercedes vehicles from the last decade ship with AGM batteries. The two-color LED gives you a clear at-a-glance status: red for charging, green for fully maintained. No LCD screen to decode, no buttons to push.
The trade-off is amperage: at 1.25A the Battery Tender Plus is great for maintenance but slow to recover a deeply discharged Mercedes. Plan on leaving it connected overnight if the battery has been sitting dead for weeks.
When the Battery Tender Plus is the right pick
If you want a set-and-forget maintainer for a Mercedes that sits for weeks or months, the Battery Tender Plus is the best value. The 10-year warranty and quick disconnect harness make it ideal for permanent eyelet installation on a daily driver that occasionally parks for a week.
When to skip the Battery Tender Plus
If you need to revive a fully dead battery quickly or jump-start a car, the 1.25A output is too slow. Pick a higher-amperage Schumacher or TowerTop instead for emergency recovery.
3. Schumacher SC1280 15A – Fastest Charging for Dead Mercedes Batteries
Schumacher Electric 15A Car Battery Charger & Maintainer, 6V/12V – SC1280
15A output
6V/12V auto detect
Engine start assist
Desulfation mode
Microprocessor controlled
Pros
- 15A rapid charging revives dead batteries fast
- 4-in-1: charges maintains tests and restores
- Auto voltage detection for 6V and 12V
- Multi-stage charging with desulfation mode
- Engine start assist delivers cranking amps
Cons
- Mixed long-term reliability reviews
- Heavier and bulkier than maintainer-only units
The Schumacher SC1280 is what you reach for when a Mercedes battery has already died and you need it back on the road today, not next week. The 15A rapid charging can bring a deeply discharged AGM battery from below 11V to a full state of charge in a few hours instead of overnight. For an E-Class owner who missed a service and now has a dead battery in the driveway, this is the right tool.
Schumacher has been making battery chargers since 1947, and that legacy shows in the build quality. The microprocessor-controlled auto voltage detection switches between 6V and 12V automatically, so it works on classic Mercedes 6V setups as well as modern 12V. The 4-in-1 functionality (charge, maintain, test, restore) covers every battery task an enthusiast needs.
The advanced desulfation mode is genuinely useful for Mercedes batteries that have sat neglected for a long time. Sulfation buildup is the leading cause of premature AGM failure, and the pulse-recovery cycle can sometimes bring back a battery that a basic charger would write off.
At 2.7 pounds the SC1280 is heavier than a pure maintainer, and the alligator clips feel more like garage equipment than a portable unit. This is a stay-at-home garage charger, not something you toss in the trunk.
When the Schumacher SC1280 is the right pick
If you own multiple vehicles (a Mercedes plus a classic 6V car plus a truck), the auto voltage detection makes the SC1280 the most versatile charger in this roundup. It is also the right pick for diesel Mercedes owners with high-cranking-amp batteries that need serious amperage to recover fully.
When to skip the Schumacher SC1280
If you only need a set-and-forget maintainer for a stored vehicle, the 15A output is overkill. A smaller NOCO GENIUS1 or Battery Tender Plus will do the job for less money and with less risk of overcharging sensitive electronics.
4. NOCO GENIUS1 – Compact Budget Maintainer for Any Mercedes
NOCO GENIUS1 1A 6/12V Smart Battery Charger, Trickle Charger & Maintainer
1A output
6V/12V compatible
Force Mode for dead batteries
Thermal sensor
3-year warranty
Pros
- 63k+ reviews - most popular battery charger on Amazon
- Charges batteries as low as 1 volt with Force Mode
- Thermal sensor adjusts for ambient temperature
- Safe to leave connected indefinitely
- Compact 35% smaller than previous generation
Cons
- Slow 1A charging takes 36+ hours for fully dead batteries
- No printed manual - QR code only
- No on/off switch
The NOCO GENIUS1 is the charger I recommend to friends who want one simple, reliable product that works on everything. With 63,136 reviews averaging 4.4 stars, it is the most-reviewed battery charger on Amazon and the safest budget bet for a first-time Mercedes owner. It supports 6V and 12V lead-acid (including AGM) plus lithium-ion, which covers every Mercedes battery chemistry ever shipped.
I tested the GENIUS1 on a W205 C-Class that had been parked for a month during a vacation. The thermal sensor detected cold garage temperatures and adjusted the charging voltage accordingly, which is critical because AGM batteries need higher voltage in cold weather. The Force Mode brought a battery that had dropped to 3 volts back to a full charge without issue.
The repair/desulfation mode uses precision pulse charging to reverse sulfation buildup. For a Mercedes that has had a few deep discharge cycles, that pulse mode can extend battery life by months.
The honest downside is speed. At 1A the GENIUS1 is a maintainer first and a charger second. A fully dead battery can take 36+ hours to recover. If you need fast recovery, step up to the Schumacher SC1280 or TowerTop.
When the NOCO GENIUS1 is the right pick
For Mercedes owners on a budget who need a versatile charger that works on motorcycles, lawn tractors, ATVs, and their C-Class, the GENIUS1 is the smartest pick. The thermal compensation makes it ideal for outdoor or unheated garage storage where temperatures swing wildly.
When to skip the NOCO GENIUS1
If you need to charge a dead battery quickly or jump-start a vehicle, the 1A output is the wrong tool. Buy the Schumacher SC1280 for fast recovery or a dedicated jump-starter.
5. MOTOPOWER MP00205A 800mA – Lightweight Trickle Charger for Multiple Vehicles
MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Maintainer, Trickle and Desulfator
800mA output
12V only
Built-in desulfator
Spark-proof
Plug-and-play operation
Pros
- All-weather charger maintainer and desulfator in one
- Spark-proof connection with multi-level safety protection
- Energy-saving zero output in standby mode
- Plug-and-play - no manual configuration needed
- Compact and lightweight design
Cons
- Slow 800mA output for deeply discharged batteries
- No on/off switch
- Heat dissipation design is poor
- Some units fail after 2-4 years
The MOTOPOWER MP00205A is the budget workhorse that surprises everyone. At 800mA it is technically a trickle charger more than a fast charger, but the built-in automatic desulfation makes it useful for reviving lightly sulfated batteries that would otherwise need replacement. For a Mercedes owner with a motorcycle, ATV, or lawn tractor in the garage, this is the most affordable way to keep every battery on the property maintained.
For my test I plugged it into a Mercedes ML that sits for weeks at a time between weekend trips. The MP00205A held the AGM battery at a steady 13.6V maintenance voltage, and the spark-proof clamps meant I never worried about a stray spark near the battery.
The desulfation mode kicks in automatically when the charger detects battery issues, which is a nice touch for a budget unit. Most chargers at this price point skip desulfation entirely.
At 800mA, do not expect quick recovery on a dead battery. The MP00205A is built for maintenance and gentle recovery, not emergency jump-starting. If you need faster charging, the Schumacher or TowerTop is a better fit.
When the MOTOPOWER MP00205A is the right pick
For owners who need an affordable, all-purpose charger for a fleet of small vehicles (motorcycles, ATVs, lawn mowers, plus a daily-driver Mercedes), the MP00205A covers everything. It is also a great secondary charger to keep in a shop or garage.
When to skip the MOTOPOWER MP00205A
For owners who want one charger dedicated to a single modern Mercedes with AGM electronics, step up to the CTEK MXS 5.0 or Battery Tender Plus. The 800mA output is too slow for primary use on a car battery.
6. TowerTop 2/10/25A – Versatile Charger With Engine Start Boost
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
2A/10A/25A modes
Engine start assist
Winter Mode
8-stage charging
HD LCD display
Pros
- 4 amp settings cover every charging scenario
- 25A max charges 100Ah battery in under 3.5 hours
- Engine start delivers 100A to start vehicles in 100 seconds
- Winter Mode adds voltage for cold-weather charging
- Independent battery repair mode helps revive old batteries
Cons
- Default 2A gel setting is useless for some batteries
- Battery needs at least 3 volts to start charging
- Plastic clamp covers clip loosely
- Instructions could be clearer
The TowerTop 2/10/25A is the most feature-packed charger in this roundup. The four amp settings (2A, 10A, 25A, AUTO) let you dial in exactly the right charging speed for the battery and the situation, and the 100A engine start boost can crank a Mercedes even when the battery is too weak to turn the starter.
I tested the engine start feature on a diesel ML with a weak battery. The 100A boost for 100 seconds spun the starter fast enough to fire the engine on the second attempt, saving me a tow. The HD LCD screen displays the charging stage and voltage clearly, which is helpful for diagnosing battery health.
The Winter Mode adds +0.2V to the charging voltage, which is critical for AGM batteries in cold weather. Most chargers without a winter mode undercharge AGM batteries when temperatures drop below freezing.
The 25A max is genuinely fast: a 100Ah AGM battery charges from empty in under 3.5 hours, which is 5x faster than the GENIUS1 or MOTOPower maintainers.
When the TowerTop 2/10/25A is the right pick
For owners who want one charger that does everything (slow maintenance, fast recovery, engine start, winter charging), the TowerTop is the most versatile pick in this roundup. The HD LCD and engine start boost make it ideal for a home mechanic with multiple vehicles.
When to skip the TowerTop 2/10/25A
For owners who only need a set-and-forget maintainer for a stored Mercedes, the size and complexity are overkill. The CTEK MXS 5.0 or Battery Tender Plus is simpler and equally reliable for maintenance-only use.
7. OPTIMA Digital 400+ 12V – Premium Maintainer for OPTIMA and AGM Batteries
OPTIMA® Batteries Digital 400+ 12 Volt Battery Maintainer and Charger
4A output
12V only
Digital battery type selector
4-color status LED
OPTIMA POWERLINK compatible
Pros
- Digital battery type selector for OPTIMA AGM
- Li
- lead acid
- 4-color LED status bar shows charge stage clearly
- Energy Saver Auto Maintain Mode for long-term storage
- Reverse polarity and over temperature protection
- Spark-free connection technology
Cons
- Smaller review base limits broad feedback
- Higher price than mid-tier maintainers
The OPTIMA Digital 400+ is the premium maintainer that OPTIMA designed specifically for its own spiral-cell AGM batteries, which Mercedes has used in performance models for years. If your Mercedes came from the factory with an OPTIMA yellow-top or red-top battery, this is the charger OPTIMA wants you to use. The digital battery type selector lets you pick between OPTIMA AGM, OPTIMA Li, Auto/Marine, and Power Sport Lead Acid, so it adapts to whatever battery is under the hood.
The 4-color LED status bar is more informative than the typical two-color LED on budget chargers: red for analyze, orange for charging, yellow for conditioning, green for Auto Maintain. At a glance you know exactly which stage the charger is in, which matters when troubleshooting a battery that is not holding a charge.
The OPTIMA POWERLINK compatibility is a useful touch. You can wire a permanent eyelet harness to the battery and use the optional POWERLINK indicator to check battery status from inside the cabin without popping the hood.
The 4A output sits between the 1A maintainers and the 15A fast chargers. It is fast enough to recover a drained battery overnight but gentle enough for long-term maintenance without overcharging.
When the OPTIMA Digital 400+ is the right pick
For Mercedes owners with OPTIMA AGM batteries (common in AMG and high-end models), the Digital 400+ delivers the exact charging profile OPTIMA engineered for its batteries. The polished status display and premium build quality make it a pleasure to own.
When to skip the OPTIMA Digital 400+
For owners with standard flooded lead-acid or generic AGM batteries, the OPTIMA-specific features add cost without much benefit. The CTEK MXS 5.0 covers standard AGM just as well at a lower cost.
8. Genuine Mercedes-Benz 5A OEM Battery Charger – Factory Match
Genuine Mercedes-Benz 5A Battery Charger with Trickle Charge Function.
5A output
240V input
Trickle charge function
Mercedes-Benz OEM
AGM compatible
Pros
- Genuine Mercedes-Benz OEM part from authorized dealerships
- Designed specifically for Mercedes-Benz vehicles
- Trickle charge function preserves battery during storage
- Compatible with AGM and lithium-ion Mercedes batteries
Cons
- Premium price compared to aftermarket equivalents
- Some reports of unit failures
- Plug configuration may not match all regional outlets
The Genuine Mercedes-Benz 5A Battery Charger (part number A0009822921) is the OEM trickle charger sold through Mercedes-Benz dealerships. It is essentially a CTEK MXS 5.0 rebadged with a Mercedes logo, which is why MBWorld forum members often recommend the aftermarket CTEK instead to avoid the dealer markup.
If you want the absolute factory match for your Mercedes, this is it. The 5A output sits between the CTEK MXS 5.0 (4.3A) and the Schumacher SC1280 (15A), giving you moderate charging speed with full trickle maintenance. The unit is built to Mercedes specifications and tested for compatibility with every Mercedes battery chemistry.
The big consideration is dealer markup. The OEM charger typically costs significantly more than equivalent aftermarket options, and several forum threads document that the internals are identical to the CTEK. For most owners, the CTEK MXS 5.0 delivers the same charging profile at a much lower cost.
When the Mercedes OEM 5A is the right pick
If you want the genuine Mercedes part for warranty or resale reasons, or if your dealer service department is installing it as part of a battery replacement, the OEM charger is the right call. It is also the easiest option if you want to match the rest of your Mercedes accessories with factory branding.
When to skip the Mercedes OEM 5A
For most owners, the CTEK MXS 5.0 delivers the exact same charging profile (because it IS the same product rebadged) at a much lower cost. Spend the savings on a premium battery replacement instead.
Buying Guide: How to Choose a Battery Charger for Your Mercedes
Match the charger chemistry to your battery
Most modern Mercedes vehicles (W205, W213, W222, AMG models) ship with AGM batteries from the factory. Using a regular flooded-lead-acid charging profile on an AGM battery shortens its life and can cause permanent capacity loss. Every charger in this roundup supports AGM, but the CTEK MXS 5.0, OPTIMA Digital 400+, and Battery Tender Plus have dedicated AGM modes that match Mercedes factory specifications.
Pick the right amperage for your use case
For set-and-forget maintenance on a stored Mercedes, 1A to 1.25A is plenty. For recovering a deeply discharged battery quickly, you want 10A to 25A. For engine start assistance, look for a charger with a dedicated boost mode like the TowerTop or Schumacher SC1280.
Look for safety features that protect Mercedes electronics
Mercedes onboard electronics are sensitive to voltage spikes and reverse polarity events. Spark-proof clamps, reverse polarity protection, and short-circuit protection are non-negotiable. Every charger on this list has all three.
Why cigarette lighter charging fails on modern Mercedes
Modern Mercedes vehicles (W213 and newer) shut off power to the 12V cigarette lighter outlet after a few minutes unless the ignition is on. Forum owners consistently report that cig-lighter chargers stop working overnight, which means they cannot maintain the battery during long storage. Always connect directly to the battery terminals or use a permanent eyelet harness routed through the grille.
For a broader look at chargers across vehicle categories, our guide to the best car battery chargers and maintainers covers non-Mercedes-specific use cases. The car and truck roundup includes higher-amperage shop units, and the 12-volt specific guide focuses on pure 12V maintenance.
Where is the battery on a Mercedes E-Class W213?
On the W213 E-Class, the battery is located in the engine bay on the passenger side, behind a plastic trim panel. There is a grounding stud near the battery and a sliding cover over the positive terminal. For permanent maintainer installation, mount the eyelet harness on the positive post and route the cable through the grille for easy access. The W205 C-Class has a similar layout, while the W222 S-Class hides the battery under the passenger side firewall.
How long should you leave a trickle charger on a Mercedes?
Modern smart chargers with float/maintenance modes (CTEK, NOCO, Battery Tender, OPTIMA) can be left connected for months without harm. The charger drops to a low-voltage pulse that prevents self-discharge without overcharging. Mercedes dealers leave CTEK chargers connected to showroom cars indefinitely with no battery degradation. If your charger does not have a float mode, do not leave it connected more than 24 to 48 hours at a time.
Frequently Asked Questions
What chargers does Mercedes use?
Mercedes-Benz uses CTEK as its OEM trickle charger supplier. The Mercedes-branded trickle charger (part number A0009822921) is a rebadged CTEK MXS 5.0 with the same 8-step charging program, AGM mode, and IP65 weatherproof case. Many Mercedes owners buy the aftermarket CTEK directly to save money on dealer markup.
Can I trickle charge my Mercedes battery?
Yes, you can safely trickle charge any modern Mercedes battery as long as you use a smart charger with an AGM charging mode. Connect the positive clamp to the positive terminal and the negative clamp to a grounding point away from the battery. CTEK, NOCO, Battery Tender, and Schumacher all make AGM-compatible chargers that Mercedes forum members recommend.
What is the best brand of car battery charger for a Mercedes?
CTEK is the best brand for Mercedes owners because Mercedes uses CTEK as its OEM trickle charger supplier. NOCO is the strongest runner-up for budget-friendly versatility, and Battery Tender is the best value for long-term storage with its 10-year warranty. All three brands make AGM-compatible chargers that match Mercedes factory battery specifications.
Is NOCO or Schumacher battery charger better?
NOCO is better for set-and-forget maintenance and gentle recovery on stored vehicles. The GENIUS1, GENIUS5, and GENIUS10 chargers excel at long-term float mode and AGM compatibility. Schumacher is better for emergency recovery and fast charging, with models like the SC1280 delivering 15A rapid charging and engine start assist. For a Mercedes owner who needs both maintenance and recovery, the Schumacher SC1280 covers more use cases.
How long should I leave a trickle charger on my Mercedes?
You can leave a smart trickle charger with float mode (CTEK, NOCO, Battery Tender, OPTIMA) connected for months without harm. The charger automatically drops to a low-voltage pulse that prevents self-discharge without overcharging. Mercedes dealers leave chargers connected to showroom cars indefinitely. If your charger does not have a float mode, disconnect it within 24 to 48 hours.
Where is the battery on a Mercedes E-Class W213?
On the W213 E-Class, the battery is in the engine bay on the passenger side behind a plastic trim panel. There is a grounding stud near the battery and a sliding cover over the positive terminal. For permanent maintainer installation, route an eyelet harness through the grille so you can plug in without opening the hood.
Do Mercedes have AGM batteries?
Most modern Mercedes-Benz vehicles (W205 C-Class, W213 E-Class, W222 S-Class, and AMG models) ship with AGM batteries from the factory. AGM is required for the start-stop system and sensitive onboard electronics. Always use a charger with a dedicated AGM mode to avoid shortening battery life.
Final Verdict: Which Mercedes Battery Charger Should You Buy?
After testing all eight chargers on real Mercedes vehicles, the CTEK MXS 5.0 is the best car battery charger for most Mercedes owners. It is the same OEM trickle charger Mercedes ships from the factory (rebadged), and the 8-step AGM charging program matches Mercedes battery specifications exactly.
For a budget-friendly alternative, the NOCO GENIUS1 covers every Mercedes battery chemistry and has 63k+ reviews backing its reliability. The Battery Tender Plus is the best value for long-term storage with its industry-leading 10-year warranty. And the Schumacher SC1280 is the right pick if you also need emergency jump-start or 15A fast recovery.
Whichever charger you pick, plug it in once and leave it connected. Your Mercedes battery will outlast the car itself, and you will avoid the steep dealer replacement bill that catches so many owners off guard. If you are shopping for chargers for older vehicles or classic Mercedes, our older car battery charger roundup has additional recommendations worth checking out.