Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
An easy way to check your charge
If your garage is full of vintage cars, lawnmowers, ATVs, and other motorized vehicles, it can be challenging to keep track of which vehicle is charged up — especially those that have to sit through seasonal storage. The Exile EM-1 LED battery monitor from RetroSound makes it easy to check your battery's status with just a glance. The red, yellow, and green lights will let you know what's ready to go and what needs a charge. Warranty: 1 year
Retrosound Exile EM-1 Reviews
What's in the box?
- LED battery monitor (w/ attached 19" power and ground leads)
- 5A ATC fuse (installed)
LED Battery Monitor: The Exile LED Battery Monitor (EM-1) allows you to easily check the status of your vehicle's battery. It features IP-65 water/dust resistant connections and housing. The LED Battery Monitor's 19" power/ground leads are terminated by O-rings (0.5625" ID) which connect to your battery's power and ground terminals. A 5-amp fuse is pre-installed on the power lead. Red, Yellow, and Green LED indicators provide real-time visual status of your battery. Once the EM-1 is connected to your vehicle's battery, the indicators will flicker according to the battery's charging status.
- Green = 12.7V charge level, no action needed
- Yellow = 12.45V-12.69V charge level, charging recommended
- Red = Below 12.44V, charge immediately
Note: The LED lights draw very little current from your vehicle's battery and can remain permanently connected to the battery all year around.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.