【Optima YellowTop YTL4-LN4 (DH7) | An AGM Battery Supporting Car Audio and Electrical Equipment】

As more devices that use electricity—such as car audio and security systems—are installed in vehicles, batteries are expected to deliver not only the “power to start the engine,” but also performance capable of withstanding repeated charge and discharge cycles.

Optima YellowTop YTL4-LN4 (DH7) is an AGM battery that combines starter-battery performance with deep-cycle capability designed to handle repeated deep discharging and charging.

It’s one of the choices that make it easier to maintain battery condition for drivers who only use their car a few times per month, those with car security systems installed, and those who use large car audio systems and other electrical equipment. In particular, if you want to emphasize stable power delivery when you turn the volume up and the cohesion of the sound, you may notice changes after replacing the battery.

Choose a Battery Based on How You Use Your Vehicle

Compared with typical starter batteries, the YellowTop YTL4-LN4 (DH7) is designed to be easier to match with vehicles that use plenty of electricity and with vehicles that are driven infrequently.

It is also suitable for vehicles equipped with winches, engine heaters, large audio systems, and more. In addition, because it is an AGM type, it can be used as an auxiliary battery for vehicles with an idling-stop system, vehicles with charging control, and hybrid vehicles.

However, even for the same vehicle model, the factory battery size, mounting method, and required capacity may differ depending on trim level and equipment. Especially with imported vehicles and BMW MINI, LN3 or LN4 may be used—so it’s important to confirm the battery size and available mounting space in the actual vehicle before choosing.

Also Check Compatibility with Car Audio

A battery replacement doesn’t always dramatically change the sound volume, but the condition of the power supply is part of what affects overall stability in the car audio system.

If you want to refine the impact in the mid-bass and low-mid range, the sparkle in the treble, sound resolution, and the cohesiveness of the sound, it’s better to look not only at the battery itself, but also at the state of charge, grounding, power wiring, and how the system pairs with the amplifier and speakers—leading to improvements that are more sensible and sustainable.

If it were me, I wouldn’t decide on a battery first. I’d review how you use the car and your current system, and think together about whether it even makes sense to make changes to the power supply. If you’re going to replace it, you’ll want to consider not only capacity, but also ease of use after installation and compatibility with the vehicle.

About Battery Replacement at LOGON

A battery can’t simply be installed “as long as the size fits.” You must check the mounting method, terminal orientation, the vehicle’s charging control, and how it relates to existing electrical equipment, and replace it in a practical, hassle-free way.

For vehicles where car audio and security systems have been installed, we also perform operational checks of each device after the battery replacement. Because the items to be checked vary by vehicle model and specifications, if you are considering a replacement, please tell us the vehicle model, model code/type, and your current battery information. If we can confirm the actual vehicle, we can advise whether the YellowTop truly fits—or whether a different battery might be better.

What matters is not choosing a battery with the largest capacity, but building a power environment suited to how that vehicle is used. If you’re struggling to choose a battery for a vehicle that uses a lot of electricity—or one you want to drive safely for a long time—please feel free to consult us.

Main Specifications / Specs

【Basic Information】
Product name: YellowTop YTL4-LN4 (DH7)
Manufacturer: Optima
Official model number: 7094-194
Type: AGM battery
Use: Starter, Deep cycle
Voltage: 12V
Warranty: Includes 3-year manufacturer product warranty (limited to engine starting use)

【Performance】
20-hour rate capacity: 80Ah
Domestic official value: 70Ah
Cold cranking amperes: 880CCA
Domestic official value: 1,000CCA
Cranking amperes: 1,000CA
Internal resistance: 2.6mΩ
Reserve capacity: 155 minutes
Cycle life: 350 cycles
Number of engine start attempts: 12,000 times or more

【Dimensions / Construction】
Standard: L4 / LN4 / H7
External dimensions: Width 315mm × Depth 175mm × Total height 190mm
Terminals: D terminal (large post)
Bottom mounting: Flange fixed with 10.5mm on both the long and short sides
Weight: Approx. 27.0kg
Handle: Yes
Construction: Flat construction

【Compatibility】
Vehicles equipped with European L4 / LN4 standards
BMW MINI, Mercedes-Benz, BMW, Audi, Volvo, Porsche, Land Rover, etc.
Compatible with some American vehicles as well

For vehicles equipped with LN3 / L3, depending on the available battery mounting space, it may be possible to use it as a size-up option. Since compatibility varies by vehicle model, year, trim, and equipment, we recommend confirming the actual vehicle before replacing the battery.