- Easy Add-On Power Upgrade: Perfect for upgrading your existing electrical system without replacing your AGM battery setup. Adds reliable voltage support exactly where your system needs it most.
- Cleaner Voltage During Bass Hits: Helps reduce voltage drops, dimming lights, and power strain so your amplifiers and accessories perform more consistently at high volume.
- Flexible Installation Options: Compact lightweight design with available Left Hand Positive and Right Hand Positive configurations makes installation easier in tight or custom spaces.
- Ideal for Daily Use or Demo Builds: Great for car audio systems, motorcycles, powersports, demo vehicles, lighting setups, and accessories that demand dependable extra power.
- Lightweight Performance Without the Bulk: Delivers serious support while weighing only 7.7 lbs., helping improve your setup without adding unnecessary weight or taking up valuable space.
XS Power 12V 29.7Ah 3000W 540A Lithium Secondary Add-On Battery
This Listing Includes:
- (1) XS Power Lithium Secondary Battery
- (1) M6 Terminal Hardware Set
*Available Options:
- Left Hand Positive
- Right Hand Positive
Need massive voltage support without adding bulky weight to your build? This ultra-compact XS Power lithium battery delivers serious performance in a lightweight 7.7 lb. design while offering the equivalent capacity of an 89Ah AGM battery.
Built for high-performance car audio systems, demo vehicles, motorcycles, powersports, accessories, and custom electrical setups, this battery helps stabilize voltage during hard bass hits, reduce voltage drop, and support your system when power demand spikes.
Available in both Left Hand Positive and Right Hand Positive terminal configurations, this battery gives installers added flexibility for cleaner wiring, easier fitment, and better compatibility with different vehicle layouts and custom builds.
One of the biggest advantages of this lithium battery is how easily it integrates into existing setups. It works alongside AGM batteries, making it an excellent secondary or add-on battery upgrade without requiring a full electrical redesign.
Its compact footprint allows flexible installation in tight spaces while still supporting systems up to 3000 watts. Whether you're chasing stronger demos, cleaner voltage, or more reliable accessory power, this battery is designed to deliver consistent performance when it matters most.
Key Features:
- Ultra-compact lightweight lithium battery
- Available in Left Hand Positive and Right Hand Positive configurations
- Only 7.7 lb. with AGM-equivalent performance
- Supports systems up to 3000 watts
- Excellent voltage support during heavy bass hits
- Helps reduce voltage drop under load
- Works alongside existing AGM batteries
- Perfect secondary or add-on battery upgrade
- Ideal for demos, accessories, and high-demand systems
- Compact size for easier installation
Specifications:
- Voltage: 12V
- Battery Chemistry: Lithium
- Max Amps: 540A
- Cold Cranking Amps (CA): 270A
- Lead Acid Equivalent CA: 405A
- Capacity: 29.7Ah
- Lead Acid Equivalent Capacity: 89.1Ah
- Energy: 381.6Wh
- Power Handling: 3000 Watts
Dimensions:
- Length: 6.5"
- Width: 6.93"
- Height: 4.92"
- Weight: 7.7 lbs
PROP 65 WARNING:
This product can expose you to chemicals including lead and lead compounds, known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands after handling.
Accepted Payment Methods at Big Jeff Audio
At Big Jeff Audio, we strive to make your shopping experience as smooth as possible by offering a wide variety of payment options. Below is a complete list of the payment methods we accept:
Credit and Debit Cards
- Visa
- Mastercard
- American Express
- Discover
- Diners Club
Digital Wallets
- Amazon Pay
- Apple Pay
- Meta Pay (formerly Facebook Pay)
- Google Pay
- Shop Pay
- PayPal
International Payment Methods
Bank Transfers
Financing Options
We also offer financing options to make purchasing easier. Learn more about our financing options here.
- Klarna
- Affirm
- Sezzle
- Snap
- Acima
- Tiptop
If you have any questions or need assistance with payments, feel free to reach out to us at info@bigjeffaudio.com or call us at 737-BIG-JEFF.
Shipping Options and Delivery Time
Do You Offer Expedited Shipping?
Yes! At checkout, you can select from different shipping options:
- Standard Shipping: Free for orders over $100.
- Expedited Shipping: Available at an additional cost, calculated based on the weight and destination of your order.
How Long Does Delivery Take?
- Handling Time: Most orders are processed and shipped within 1 business day after receiving cleared payment. Occasionally, additional handling time may be required, but we’ll notify you if that’s the case.
- Standard Shipping: Typically takes 3-5 business days, though delivery may be affected by extreme weather or holidays.
What Happens If My Package Is Undeliverable?
If your package is refused or marked undeliverable and returned to us by the carrier, you’ll need to pay the full shipping cost to have the package resent. Alternatively, we can refund your order, minus the cost of shipping.
Why Can’t I Track My Order?
If you're having trouble tracking your order:
- Make sure you’ve received the shipping confirmation email with the tracking number.
- Log into your account on our website and use the “Check Your Order Status” button.
- If the issue persists, please refer to our detailed guide on tracking your order or contact our customer service team for further assistance.
