20Ah Lithium Battery – Built, Ready To Use

Designed for serious car audio builds, our 20Ah Lithium Battery delivers high-discharge performance in a compact, lightweight package. Whether you're running a strong 6KW RMS daily setup* or pushing extreme demo power, this battery is built to perform.

In testing, we have seen up to 11KW from these batteries in the correct setup.

Each unit is built to order, professionally assembled, and supplied with a balancer included.

⚡ Performance & Specifications

• ✅ Built & Ready To Use

• ✅ Tested up to 11KW (correct setup required)

• ✅ Supports up to 6KW RMS installs*

• ✅ 1200 CCA @ 0°C

• ✅ 14.8 – 15.5v Compatible (stock charging systems)

• ✅ Balancer Included

• ✅ 12 Months Warranty

• ✅ Can be built to higher capacity & voltage if required

• ✅ Individually built & tested before dispatch

🔋 Lightweight Power Advantage

Weighing just 5kg, this lithium battery offers a massive weight saving compared to a typical 100Ah AGM lead acid battery, which commonly weighs 25–30kg.

To achieve similar usable high-discharge audio performance from AGM, you would typically need at least three 100Ah AGM batteries.

That means:

• 75–90kg in AGM weight
vs
• Just 5kg with lithium

Less weight. Less space used. More stable voltage under load.

🔧 Installation Options

• Can be used as a second battery with a 500A relay or suitable isolator

• Can replace your stock battery entirely

• Designed for interior / boot installations

• ⚠️ Not recommended for installation in the engine bay

Battery must be securely mounted and protected from moisture and excessive heat.

We can also supply:

• 🔩 Battery mounting solutions

• ⚡ 500A relays for proper secondary battery installation

⚠️ Important Charging Information

• Recommended operating range: 14.8 – 15.5v

• Vehicle charging system must be healthy and properly regulated

Incorrect wiring, over-voltage, under-voltage, or charging system faults can damage lithium batteries and will void warranty.

Power capability depends on overall system design, wiring quality, alternator output, and tuning.

🛠 Build Time

3–4 Weeks (Built to Order)

🛡 Warranty

12 Month Warranty covering manufacturing defects.
Does not cover misuse, incorrect charging, improper installation, or physical damage.

*6KW RMS setups recommended with a minimum 300A+ alternator to maintain proper voltage support.

If you're building serious power, power it properly with D2U Alternators.

For custom capacity, higher voltage builds, mounting kits or relay packages, please contact us directly.