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Mestic Lithium Battery Mlb-300 Smart - leisure batteries for caravans and campervans offering stable off-grid power for appliances and travel equipment - My Mestic
Mestic Lithium Battery Mlb-300 Smart - leisure batteries for caravans and campervans offering stable off-grid power for appliances and travel equipment - My Mestic
Mestic Lithium Battery Mlb-300 Smart - leisure batteries for caravans and campervans offering stable off-grid power for appliances and travel equipment - My Mestic
Mestic Lithium Battery Mlb-300 Smart - leisure batteries for caravans and campervans offering stable off-grid power for appliances and travel equipment - My Mestic

Mestic Lithium Battery Mlb-300 Smart

by Mestic

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Ā£1,422.99 - Ā£1,422.99
Ā£1,422.99
Ā£1,422.99 - Ā£1,422.99
Ā£1,422.99
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Shipping information

We aim to dispatch all orders placed before 1 PM on the same working day.

Standard delivery is 1ā€“2 working days to most UK mainland addresses.

  • Free UK Mainland delivery on orders over Ā£40
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Returns & warranty & contacting us

We want you to be completely satisfied with your Mestic purchase.

If your item arrives damaged or you change your mind, you can return it within 60 days of delivery in its original packaging for a refund or exchange.

All Mestic products come with a manufacturerā€™s warranty (typically 2 years) covering defects in materials and workmanship.

For return requests or warranty support, please contact our customer care team at onlinesales@mymestic.co.uk with your order number and a brief description of the issue.

Downloads

Manual Lithium Battery MLB-300 smart.pdf Handleiding Mestic app Lithium Battery MLB- 300.pdf

Lithium battery MLB-300 smart

When you take your camping vehicle on holiday, you need a battery you can trust blindly. So opt for the Mestic lithium battery MLB-300 smart. This smart variant is lightweight, maintenance free, quick to charge and can be controlled via the Mestic App.

Lithium battery with Battery Management System

Use the Mestic lithium battery MLB-300 smart as an on-board battery, for your caravan mover or to charge your electronic camping devices. Lithium batteries have a Battery Management System that controls all vital functions of the battery. This makes them extra safe and protected against things like excessive charge and discharge. The Mestic lithium battery MLB-300 smart has a capacity of 300 Ah. An advantage of lithium batteries is their low internal resistance. This allows the battery to charge quickly and discharge up to 100%, without shortening its lifespan. The MLB-300 allows you to connect as many as 8 batteries in parallel. This increases the capacity and you always have backup power as soon as a battery fails. You easily control the Mestic lithium battery MLB-300 smart via the Mestic app.

High-Capacity Off-Grid Power for Serious Touring

The Mestic MLB-300 Smart is built for campers and motorhome owners who need extended off-grid power without compromise. Its huge 300Ah LiFePO4 capacity delivers long-lasting energy for fridges, cool boxes, lighting, inverters, heating systems and full solar setups. Safe LiFePO4 chemistry, smart BMS protection and rapid charging make it ideal for larger campervan electrics or long-stay camping. Perfect for upgrading from AGM or smaller lithium units when reliability and endurance matter most.

Main benefits, Why choose this battery?

  • Technology: LiFePO4
  • Capacity: 300 Ah
  • Weight: 29.7 kg
  • Dimensions: 52 x 22 x 22.5 cm
  • Features a display and Bluetooth
  • 8 batteries can be connected in parallel
  • With Battery Management System (BMS)
  • 3000 life cycles with regular use
  • 5-year warranty

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Specifications

Article number 1518440
Connection voltage 12,8 V
Dimensions (lxwxh) 52 x 22 x 22,5 cm
Battery technology LiFePO4
Capacity 300 Ah
Display Yes
Warranty 5 years
Weight 29,7 kg
EAN-code 8712757483280

See All In This Range

Other Mestic batteries:

Battery chargers:

Solar panels:

Lithium vs Traditional Leisure Batteries

Compared with traditional lead-acid leisure batteries, the Mestic Lithium Battery MLB-100 Smart is typically lighter, offers more usable capacity, and delivers steadier 12V performance during everyday use. When paired with compatible charging equipment, lithium batteries are well suited to modern campervan, motorhome and solar-powered setups.

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What these battery specs mean for you

Below is a quick guide to what each of these figures means in real-world use, so you can decide whether this battery is the right fit for how you camp, travel or live off-grid.

Capacity (Ah)

Battery capacity shows how much energy the battery can store. A higher amp-hour (Ah) rating means you can run appliances like fridges, lighting and device charging for longer before needing to recharge.

If you regularly camp off-grid or rely on solar charging between trips, higher capacity gives you more flexibility and reduces the need for frequent recharging.

Nominal voltage (12 V)

This battery is designed for standard 12 V leisure systems used in campervans, motorhomes and touring vehicles. A stable 12 V output helps ensure your appliances receive consistent power during everyday use.

This is especially useful when running sensitive electronics or devices that perform best with steady voltage rather than fluctuating supply.

Charging & discharge capability

Lithium batteries can accept and deliver power efficiently when used with compatible charging equipment. This means quicker recovery after use and more reliable performance during higher-demand periods.

For solar setups, pairing the battery with a suitable MPPT charge controller helps manage charging efficiently and supports consistent day-to-day operation.

How this affects your set-up

Taken together, these values give a clear picture of real-world performance. Capacity influences how long you can run your equipment, voltage confirms compatibility with standard leisure systems, and charging capability affects how quickly the battery can recover using solar, mains or vehicle charging.

If you mostly camp with hook-up or only power light loads, a smaller setup may be sufficient. If you regularly camp off-grid, rely on solar charging or use several 12 V appliances, choosing a higher capacity battery and pairing it with compatible charging support will provide more dependable everyday power.

Works great with

Complete your setup with these compatible products
Mestic Solar Panel Foldable Msfo-150 - solar panels for caravans and campervans designed for efficient off-grid power and reliable charging while touring - My Mestic MLB-100
Great portable pairing for recharging a 100Ah battery

Mestic Solar Panel Foldable Msfo-150

Ā£202.99
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Mestic Power Cable Kit Mc4 - Universal | UK Camping and Leisure Essential Add-On
Protects your system and keep your battery charging efficiently

Mestic Power Cable Kit Mc4 - Universal

Ā£17.99
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Mestic Solar Roof 2 Cable Connection 1503230 - solar charge controllers and connectors for caravans and campervans ensuring safe, stable off-grid solar power management - My Mestic Essential Add-On
Protects your system and keep your battery charging efficiently

Mestic Solar Roof 2 Cable Connection

Ā£15.99
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Mestic Solar Panel Monocrystalline Msmo-160 160W - solar panels for caravans and campervans designed for efficient off-grid power and reliable charging while touring - My Mestic MLB-300
Reliable charging for larger 300Ah battery setups

Mestic Solar Panel Monocrystalline Msmo-160 160W

Ā£136.99
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Mestic Solar Panel Back Contact Msbc-300 - solar panels for caravans and campervans designed for efficient off-grid power and reliable charging while touring - My Mestic MLB-300
Ideal match for 300Ah systems. fast roof-mounted recharging

Mestic Solar Panel Back Contact Msbc-300

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Mestic Solar Panel Monocrystalline Msmo-160 160W - solar panels for caravans and campervans designed for efficient off-grid power and reliable charging while touring - My Mestic MLB-100
Balanced roof panel for steady 100Ah battery charging

Mestic Solar Panel Monocrystalline Msmo-160 160W

Ā£136.99
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Mestic Solar Panel Foldable Msfo-200 - solar panels for caravans and campervans designed for efficient off-grid power and reliable charging while touring - My Mestic MLB-300
Strong portable option for keeping a 300Ah battery topped up

Mestic Solar Panel Foldable Msfo-200

Ā£245.99
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Mestic Solar Panel Foldable Msfo-100 - solar panels for caravans and campervans designed for efficient off-grid power and reliable charging while touring - My Mestic MLB-100
Compact option for light 100Ah battery top-ups

Mestic Solar Panel Foldable Msfo-100

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Mestic Batteries FAQ

What does ā€œSmartā€ mean on the Mestic batteries?

ā€œSmartā€ refers to the built-in Battery Management System (BMS). The BMS monitors charging and discharging behaviour to help keep the battery operating within safe limits during everyday use.

Do the MLB-100 & Mlb-300 Smart have built-in battery protection?

Yes. The integrated BMS is designed to help protect against issues such as over-charging, over-discharging and excessive load, supporting safer and more reliable operation in 12 V leisure systems.

Can this battery be mounted inside a campervan or motorhome?

The MLB-100 & 300 Smart are designed for leisure and touring applications and are typically installed inside vehicles or dedicated battery compartments. Always ensure adequate ventilation and secure mounting as part of your installation.

Can I connect multiple lithium batteries together?

In some systems, lithium batteries can be connected in parallel to increase capacity, but system compatibility depends on your overall setup and charging equipment. Always check manufacturer guidance and system limits before expanding your battery bank.

Is this battery suitable for replacing a traditional leisure battery?

Mestic Smart Batteries can be used as an upgrade from traditional leisure batteries in many setups, provided your charging equipment supports lithium batteries. Checking compatibility before installation is recommended.