Premium 300AH Lithium Battery | SJRV Autory 12V Metal Case | Van DIY

Autory 12.8V 300Ah LiFePO₄ Battery — High-Capacity Power for Off‑Grid and Mobile Use

These batteries utilise only A grade lithium cells and are fully tested under strict conditions.  We're so confident in the quality of these batteries that we offer a 3 year replacement warranty (subject to testing).  The Autory lithium batteries have undergone strict testing by an independent authority and we have provided the testing results for you to download and peruse.  Also, the certificate of compliance is available to download.

Our Autory batteries are rated to IP67 and the independent water and dust ingress testing report can be downloaded HERE.

IEC 62619 – Why It Matters for Lithium Batteries

Connecting lithium batteries in parallel

Get serious about energy with the Autory 12.8V Premium 300Ah Lithium Battery, a true powerhouse ideal for caravans, campervans, tiny homes, boats, and off-grid solar setups. Built with reliable LiFePO₄ technology, an advanced internal BMS, and a rugged all-metal casing, this battery delivers exceptional performance, durability, and peace of mind wherever you roam.

🔋 Key Features

• Massive 3840Wh of Usable Power
• Easily powers fridges, lights, water pumps, inverters, and other 12V gear during extended off-grid adventures.
• Advanced Battery Management System (BMS)
• Offers full protection from overcharging, over-discharging, overheating, low-temperature operation, and short circuits. Keeps your battery running safely and efficiently in all conditions.
• Heavy-Duty Metal Construction
• Tough metal casing resists heat, impact, and vibration — ideal for mobile and marine environments.
• High Performance Specs:
• Nominal Voltage: 12.8V
• Capacity: 300Ah
• Total Energy: 3840Wh
• Max Continuous Discharge Current: Up to 300A
• Peak Discharge: Up to 600A (for short bursts)
• Charge Voltage: Up to 14.6V
• Discharge Cut-off: ~10V
• Operating Temp (Discharge): −20°C to +60°C
• Operating Temp (Charge): 0°C to +60°C

⚙️ Ideal For:

• Caravan and RV electrical systems
• Off-grid solar battery storage
• 12V touring and 4WD setups
• Boats and marine systems
• Tiny homes and mobile cabins
• Portable backup power solutions

✅ 3-Year Return-to-Base Replacement Warranty

This battery comes with a 3-year return-to-base replacement warranty. If the battery is returned and confirmed to be faulty, a brand-new replacement will be supplied.

Warranty details:

• Return freight to our facility is at the customer’s expense
• Replacement freight is covered
• If the battery is tested and found not faulty, the return freight is again at the customer’s expense
• Warranties do not renew with a replacement unit

🌱 Why Choose LiFePO₄?

LiFePO₄ batteries are lightweight, maintenance-free, and far more efficient than AGM or lead-acid options. They maintain a stable voltage, offer full usable capacity, and are safer for use in mobile or enclosed environments. If you're looking for reliable, long-term power for your off-grid or mobile setup, this 300Ah battery delivers in every category.