Battery Replacement at S2 Dynamics

The life of car batteries vary, but there are three primary factors that impact how long they last: time, heat and vibration. Like people, car batteries age over time and have a limited life. Even under perfect conditions, eventually a battery will have to be replaced. Heat can affect the rate at which it degrades. Vibration can cause a physical breakdown of internal parts. A malfunctioning charging system also can reduce its lifespan.

How do you know when it’s time to replace your battery? There are some definite warning signs. Here are a few you should pay attention to:

Slow Engine Crank – If the starter motor cranks the engine slowly and takes longer than normal to start, you’ll want to have the battery checked.

Warning Light – If the battery/charging warning light comes on, it’s an indication your battery may be failing. It’s a signal that it’s time to have it checked. The check engine light sometimes appears when your battery power is weak.

Dim Headlights – If your car is older, you may notice your headlights seem dim, particularly when the car is idling. This might be caused by a weak battery, so it would be a good idea to have the battery checked.

Clicking Sound – If your car makes a clicking sound when you try to start the engine, it could mean the battery is too low to crank the engine or that there’s a bad connection to the battery.

Low Battery Fluid – If part of the battery casing is translucent, keep an eye on the battery’s fluid level. If the fluid level goes below the lead plates inside, have the battery and charging system tested.

Swollen Battery Case – If your battery casing looks bloated, there’s a good chance the battery is bad. Excessive heat can cause the battery case to swell and decrease the battery’s life.

Rotten Egg Smell – If you notice the rotten egg smell of sulfur, it might be caused by a battery leak. Leaking causes corrosion around the post. If you remove the corrosion, your car may start, but you should have the battery checked.

If you own an AudiBMWVolkswagen, or MINI, when it’s time for battery replacement, you’ll want the services of a certified technician because replacing the battery on an import can cause diagnostic trouble codes. Chances are you don’t know how to clear them or resynchronize parts. Plus, when an S2 Dynamic pro replaces your car’s battery, they have an opportunity to spot other potential problems. A trained professional will see things you might miss and be able to alert you before damage is done.

It’s a good idea to have your battery checked at every oil change. It’s more convenient to replace your battery when the charge gets low than to have a battery fail.

S2 Dynamics is your Rockville battery replacement center. If you notice any of the warning signs, or just want to be sure everything is as it should be, visit us at 12058 Parklawn Drive in Rockville, MD. Call us at (301) 881-1283, or schedule an appointment online at

Dealer Info

Phone Number:


(301) 881-1283

Service Hours:

Mon - Fri

8:00 AM - 6:00 PM

Sat - Sun


Operations Update

The safety and well-being of our guests, employees and community is our top priority. We have adjusted hours and operations as necessary to protect the health of our guests and employees. Our staff is following guidelines set by public health authorities to keep everyone safe.

As a designated essential service, our parts and service facilities will be open to serve our customers.

We have implemented our touchless customer drop off and pick up services. Please call (301) 881-1283 for additional details.

Service & Parts

Open 8:00 am – 5:00 pm Monday-Friday

Vehicle Drop of Instructions

While customer waiting area is temporarily closed to walk in traffic. We ask that all customers Drop off vehicle for service until further notice. Drop off instructions are below.

  1. Park your vehicle in a parking space.
  2. Open the Black Early Bird Night Owl box from the top and obtain a key envelope.
  3. Fill out information on the envelope…
  4. Lock your car and place keys in envelope.
  5. Drop envelope into mail slot in Early Bird Night Owl box.

Picking Up Vehicle after service

  1. Locate your box number and code sent to you Via text message
  2. Input your code
  3. Open box and retrieve your keys