Lithium Batteries

Explore our most popular Lithium batteries below — trusted for campers, boats, caravans, 4x4s, solar setups, and off-grid systems.

Lithium (LiFePO₄) batteries are the new gold standard for powering campers, caravans, marine electronics, 4×4 setups, solar systems, RVs, and off-grid homes across New Zealand. At Battery Warehouse NZ, we stock a wide range of high-quality lithium batteries designed for Kiwi conditions — lightweight, safe, fast-charging, and built to last up to 10 times longer than traditional deep-cycle batteries. Whether you need reliable power for a fridge, inverter, winch, trolling motor, pump, or full off-grid system, our lithium range gives you higher usable capacity, longer run times, and exceptional durability. Explore our range below, or get expert help from our Tauranga team to choose the perfect lithium battery for your setup.

Why Choose Lithium (LiFePO₄) Batteries?

Lithium batteries offer more usable power, faster charging, and much longer lifespan compared to lead-acid — without the weight, fumes, or maintenance.

Key Benefits

• Up to 10× longer life than lead-acid
• Lightweight design (perfect for 4x4s and caravans)
• 80–100% usable capacity
• Fast charging with solar or DC-DC chargers
• Safe LiFePO₄ chemistry with integrated BMS
• No maintenance or acid spills
• Excellent for vibration-heavy environments (boats, campervans, off-road setups)

Not Sure What Lithium Battery You Need?

No two installations are the same. Tell us what you’re powering and we’ll size the perfect battery.

Tell Us Your Setup

We’ll help if you let us know:

• What appliances you want to power
• How long you need them to run
• Your charging source (solar / alternator / mains)
• Inverter size (if using one)
• Mounting space or weight restrictions

You’ll get the right battery the first time — no guesswork.

Lithium Battery Buyers Guide

What Size Lithium Battery Do You Need?

75Ah Lithium Battery

• Lights
• Small pumps
• USB charging
• Small coolers or light-duty fridges

100–130Ah Lithium Battery

• 12V fridges/freezers
• Lighting
• Sounders/fish finders
• Pumps
• Charging devices
• Weekend or full-time camping
• Most caravan or marine house systems

200Ah+ Lithium Battery

• Inverters (1000–3000W)
• Large fridges/freezers
• Long runtime without solar
• Cabin/off-grid systems
• Boats with heavy electronics loads

Do You Need a Slimline Lithium Battery?

Slimline lithium batteries are designed for tight spaces such as:

• Behind ute seats
• Under false floors
• In marine compartments
• Inside camper cabinets

Perfect when you don’t have room for a standard battery case.

View our 120Ah Slimline Lithium Battery →

Do You Need a Lithium Charger?

Lithium batteries perform best when paired with a LiFePO₄-compatible charger.

A smart lithium charger gives:

• Faster charging
• Longer battery lifespan
• Proper balancing via BMS
• Safe float and absorption profiles

View Lithium Charger →

Frequently Asked Questions

Are lithium batteries safe?

Yes — LiFePO₄ is one of the safest battery chemistries available.  Lithium batteries sold by Battery Warehouse NZ are built with advanced safety features such as a Battery Management System (BMS) to protect against overcharging, overheating, and short circuits. Choosing a trusted brand ensures safety and long-lasting performance.

What makes a lithium battery better than a lead-acid battery?

Lithium batteries are lighter, charge faster, and last much longer than traditional lead-acid batteries. They can handle more charge/discharge cycles, making them a cost-effective choice over time. Plus, they deliver consistent power right until the battery is nearly empty — unlike lead-acid, which gradually loses strength.

Can I replace my lead-acid battery with lithium?

In most cases, yes. Many lithium batteries are designed as direct drop-in replacements for lead-acid batteries. However, it’s important to check your system’s compatibility, especially the charging setup. Our team at Battery Warehouse NZ can help you find the right lithium option for your vehicle or off-grid system.

How long do lithium batteries last?

With proper care, lithium batteries typically last 6–10 years or around 3,000–5,000 charge cycles — longer than lead-acid batteries. That’s why they’re a popular upgrade for RVs, solar systems, boats, and high-performance applications.

Are lithium batteries good for marine use?

Yes — they’re lightweight, maintenance-free, and vibration-resistant.

Where are lithium batteries most useful?

Lithium batteries are ideal for solar energy storage, RVs, motorhomes, camping setups, marine use, mobility applications, and high-performance vehicles. Anywhere you need lightweight, reliable, and long-lasting power, lithium is the smart choice.

Why Buy Lithium Batteries from Battery Warehouse NZ?

• Local experts with 25+ years experience
• Stocking trusted brands
• Nationwide delivery + depot pickup options
• Battery Finder tool for quick matching
• Straightforward Kiwi advice
• Great pricing every day

Lithium Battery Comparison Table