Compact Power, Endless Energy

Ultra Slimline Lithium Battery: Built to fit tight spaces while delivering powerful, reliable energy.

Key Benefits

Slimline Lithium Battery

Ultra-thin, lightweight, and powerful—fits tight spaces perfectly. Reliable for all environments, ideal for off-road, camping, RVs, trailers, and marine use.

Ultra Thin & Lightweight

Designed to fit in tight spaces without sacrificing power, making it perfect for vehicles and equipment with limited room.

Reliable Performance

Durable and safe, this battery provides steady power in any environment, from the trail to the sea.

Versatile Uses

Ideal for off-road vehicles, camping trips, RVs, trailers, boats, and marine equipment.

Where You’ll Find Us (Applications)

Perfect for 4WDs, RVs, camping, and marine use. Fits tight spaces, powers off-grid adventures, and ensures reliable energy on the move, even in challenging marine conditions.

4WD Vehicles

Fits snugly behind seats, under floors, or along the sides, powering your off-road adventures with ease.

Camping and Off-Road Adventures

Keep your gear running off-grid, powering fridges to lights without worry.

RVs and Travel Trailers

A powerful, compact energy source to keep your devices running while you’re on the move.

Boats and Marine Equipment

Designed to withstand the challenges of the water, delivering dependable power for marine needs.

See the Difference | Discover Your Next Adventure

Explore how Ultra Slim Lithium Battery can power your journey.
Get in touch for more details and a custom solution.

Slimline Lithium Battery Supplier of Both Finished & Customized Batteries

At LeadmaxBattery, we offer space-saving, reliable slim lithium batteries in both finished and custom options.

Ideal for compact spaces, our lightweight batteries deliver consistent power for car audio, RVs, marine, and more.

Need a specific size or design? We provide tailored solutions to meet your exact needs, all with high-quality performance and durability. LeadmaxBattery is your trusted partner for efficient, powerful energy solutions.

A China Slimline Lithium Battery Manufacturer

We are a China-based manufacturer of slim lithium batteries, perfect for compact spaces in cars, RVs, marine gear, and more.

Offering both standard and custom options, we deliver reliable, lightweight power solutions designed for efficiency and durability.

What Makes Us Special?

With 12+ years in lithium battery design and manufacturing, we deliver reliable power solutions worldwide. Our R&D team, from BYD and CATL, brings deep expertise. We partner with global clients in North America and Europe, using trusted cells from CATL, Lishen, Gotion, and BYD. Offering both standard and customized packs, we provide fast tailored solutions with quotes in 24 hours.

What is a slimline lithium battery and how is it different?

It is a thin, space-saving battery design, ideal for tight installations, offering reliable power without bulky size.

Which chemistry is used (LiFePO4, NMC, etc.)?

Most slimline batteries use LiFePO4 for safety, long cycle life, and thermal stability, but other chemistries can be customized.

Can voltage, capacity, and dimensions be customized?

Yes. As a factory, we provide fully customized designs to match your equipment and application needs.

What is the maximum continuous and peak discharge current?

This depends on the design. Each battery is rated for a safe continuous current and a short peak current for heavy loads.

How long is the cycle life?

Premium slimline LiFePO4 batteries deliver 2,000–5,000+ cycles and can last 5–10 years under normal use.

Is a Battery Management System (BMS) included?

Yes. The BMS protects against over-charge, over-discharge, over-current, short circuit, and temperature issues.

Can multiple batteries be connected in series or parallel?

Yes. Batteries can be paralleled to increase capacity or connected in series to increase voltage, with proper balancing.

How should the battery be stored or maintained?

Store at 40–60% charge, avoid extreme temperatures, recharge every few months, and always use a compatible charger.

What certifications and transport requirements apply?

All batteries must meet UN 38.3 for safe transport, and additional certifications like CE, UL, or IEC may be required for your market.

How Can We Help Your Business?

We provide factory-direct slimline lithium batteries with custom design, reliable LiFePO4 performance, and flexible supply to support your OEM and distribution needs.