Car Battery Replacement & Hybrid Battery Services in Concord, NH

Reliable Power Starts Here at Accomplished Auto

Car Battery Testing in Concord NH | Accomplished Auto

Your car or trucks battery is very much the heart of your electrical system. It is what stores power for everything from starting the vehicle. To running your accessories on your coffee break and supplying power for today’s advanced safety and diagnostics systems. With a failing battery you can experience everything from slow or even no starts. As well as various electrical system failures and weird glitches. Here at Accomplished Auto in Concord, NH, we have a team of trained and certified technicians. They provide professional battery testing, and hybrid battery services. Using dealer and professional level testing and diagnostic equipment.

We are here to serve Concord and surrounding communities including Pembroke, Bow, Boscawen, Contoocook, Hooksett, Allenstown, Dunbarton, and Hopkinton, NH.

Expert Battery Testing & Diagnosis

If you notice that your car seems to crank slowly on a chilly morning. Or your radio presets keep getting lost, lights flicker or infotainment screens flicker. It may be time to have your battery and electrical system checked. Because of today’s cars’ sophisticated electrical system, some with many batteries. A stable power supply is more important than ever to prevent glitches and fault messages.

We use professional-grade tools to test your battery, alternator, and complete charging system. This includes testing for:

Proper battery voltage and cold cranking amps (CCA)
Battery terminals and wiring (Corrosion and condition)
Battery securely mounted
Alternator charging performance
Parasitic drain or wiring faults
Start/stop system charging issues
Dual-battery and auxiliary system performance
High Voltage Battery rate of charge and discharge levels
High Voltage Battery Balance Levels Between Cells

We will use this testing to pinpoint the issue and any contributing factors. Whether it is a weak battery, alternator or wiring and control issue. This way we can solve the problem and give an accurate estimate of what is needed.

Professional Car Battery Replacement

AGM Battery Replacement in Concord NH | Accomplished Auto

When you need a new battery, we are here to ensure you get the right one. Manufacturers have certain standards for the batteries they recommend not only will they fit. If the battery does not meet those standards, you could be right back to hard starts and dead batteries when you get back from vacation. Here at Accomplished Auto we use quality batteries that meet or exceed those specifications. Many newer cars even have electrical and charging systems designed only to work with AGM (Absorbed Glass Mat) or EFB (Enhanced Flooded Batteries). Especially when equipped with start/stop systems.

We also take not account how you use your vehicle. For example:

Trucks with plows or heavy electrical accessories often need higher-capacity batteries.
Performance and luxury vehicles may require AGM or specialty batteries.
Vehicles with start/stop systems or multiple batteries need both batteries tested. An auxiliary battery can cause system faults or warning lights if weak.

When we replace a battery, we also include:

Full electrical system checks before and after installation
Cleaning and treatment of battery terminals to prevent corrosion
Securing the battery mount for proper fit (a loose battery can be damaged from movement and vibration)
Environmentally responsible disposal of your old battery

All batteries we install are covered under our Nationwide 3-Year / 36,000-Mile Warranty through our NAPA Autocare partnership. This way you’re protected anywhere you travel.

Hybrid & EV Battery Services

Hybrid Battery Replacement in Concord NH | Accomplished Auto

Hybrid and EV vehicles use a high voltage battery for their main propulsion and power supply much like your gas engine and alternator. What a lot of people do not understand is they also have a 12V or on some newer models 24V accessory battery. They rely on these to power all your normal accessories and lights. Along with the safety systems including ensuring the high voltage battery is safe to power up. These use sophisticated control systems. This ensures proper and safe operation and charging.

We provide:

Hybrid battery pack testing and diagnostics
12V auxiliary battery testing and replacement
Auxiliary battery charging system testing
High voltage charging system testing
Cooling system inspection for hybrid battery modules
High-voltage safety and system testing and repair
High voltage battery replacement

Whether your Toyota Prius needs a traction battery replacement or your plug-in hybrid or EV has fault messages. We can test, service, or replace battery components safely using manufacturer-level tools and equipment.

Signs You May Need a Battery Service

Watch for these common symptoms that can indicate a battery or charging system problem:

Car won’t start or cranks slowly
Battery or charging warning light on dashboard
Dim headlights or flickering interior lights
Electrical components (radio, windows, etc.) acting erratically
Corrosion or buildup around the battery terminals
You’ve recently needed a jumpstart

If you notice any of these issues, don’t wait. A weak or failing battery can quickly leave you stranded.

Your Local Battery Experts in Concord, NH

Our team here at Accomplished Auto combine technical expertise with personal service. Whether you need a quick battery and charging system test. Or a complex hybrid battery system troubleshooting. Our trained and certified technicians are here with the proper tools and experience to get you back on the road.

Schedule your service today for piece of mind and reliability in your day to day travels on New England’s roads.