BigBattery NEXUS 51.2V 15kWh LiFePO4 Battery + EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter Kit

BigBattery NEXUS 51.2V 15kWh LiFePO4 Battery + EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter Kit

$2,020.19
$2,020.19
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Note: Some of our best-sellers sell out quickly. As long as the “Add to Cart” button is visible, the item is still available.

Introducing the Nexus

Legacy Product Parallel Compatibility

The NEXUS is compatible and parallel-able with all existing KONG and GRIZ products purchased between 2019-2024.

 

INSTALLATION NOTE

Our lighting products are designed for easy and reliable installation. Depending on the model, your item will either be hardwired directly into your mains electricity or simply plug into a standard wall socket.

If your product is hardwired (please refer to “Power Supply” above), we recommend installation by a qualified electrician to ensure safety and optimal performance.

For plug-in models, no special installation is required—just connect to a standard outlet and enjoy.

Detailed installation instructions are included in the manual provided with your product.

QUALITY GUARANTEE

At Elm & Harlow, quality is at the core of everything we do.
Each piece is carefully selected and undergoes strict quality control to ensure it meets our high standards and your expectations.

SHIPPING & DELIVERY

We deliver across the United Kingdom using trusted partners.

Orders are processed within 1–2 business days (Mon–Fri).

Delivery typically takes 4–6 business days, for a total delivery time of 5–8 business days.

Free shipping is available across the UK.

Once dispatched, you’ll receive a tracking number. Please allow 1–2 business days for tracking updates.

RETURNS

Changed your mind? Not completely satisfied? No problem.

You can return your item within 30 days of receiving your order.

Our returns process is simple, fast, and hassle-free.

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Selected Variant Image
BigBattery NEXUS 51.2V 15kWh LiFePO4 Battery...
1 x NEXUS Battery + EG4 12000XP Inverter
$2,020.19
$2,020.19
Selected Variant Image
BigBattery NEXUS 51.2V 15kWh LiFePO4 Battery...
1 x NEXUS Battery + EG4 12000XP Inverter
$2,020.19
$2,020.19

LIMITED-TIME OFFER

Enjoy 15% OFF when you purchase 2 items.

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FREQUENTLY ASKED QUESTIONS

We’re here to help and answer any questions you may have.

How long does delivery take?

Orders are processed within 1–2 business days and delivered within 4–6 business days after that — so you can expect your order within 5–8 business days in total. Free shipping on all UK orders.

What's your return policy?

You have 30 days from delivery to return an item, as long as it's unused and in its original packaging. Return shipping is covered by the customer, except for faulty items or errors on our end — those are on us.

Will I be charged any customs or import fees?

No, there are no additional customs fees or hidden charges for UK deliveries. The price you pay at checkout is final.

Are your hardwired lights safe to install myself?

For hardwired products, we recommend installation by a qualified electrician. Plug-in products require no special installation and are ready to use straight away.

What if my item arrives damaged or faulty?

Contact us immediately at support@elmharlow.com with photos, and we'll arrange a replacement or full refund at no extra cost to you.