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Collection: Lithium Batteries

Lithium-ion (Li-ion) batteries have several advantages over conventional lead-acid batteries:

Maintenance free
High energy density: more energy with less weight
High charge currents (shortens the charge period)
High discharge currents (enabling for example electrical cooking on a small battery bank)
Long battery life (up to six times the battery life of a conventional battery)
High efficiency between charging and discharging (very little energy loss due to heat development)
Higher continuous power available

Rugged

A lead-acid battery can fail prematurely due to sulphation if it is left partially charged, fully discharged, or rarely fully charged for long periods of time.
A Lithium-ion battery does not need to be fully charged, has a wide operating temperature range and excellent cycling performance.
They are therefore the battery for very demanding applications.

Efficient

The typical energy efficiency (energy that can be taken out of the battery compared to energy required to re-charge) for lead acid batteries is ~ 80%.
For a Li-ion battery it is ~ 92%
The final 20% charge for a lead-acid battery is particularly inefficient with efficiencies of ~ 50% and can take a very long time for the battery to become completely charged.
In contrast a Li-ion battery can still achieve 90% efficiency and so can be fully charged more quickly and using les energy.

Size & Weight

Li-ion batteries save up to 70% in space and 70% in weight compared to lead-acid.

Expensive?

Li-ion batteries are expensive when compared to lead-acid, but can be compensated for by longer service life, size or weight considerations, superior reliability & efficiency.

Battery Management System

It is vital that the correct battery management system (BMS) is used to control the battery charging. This is important to actively balance the individual cells that make up the battery and prevent under or over voltage which can otherwise destroy the battery.

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27 products

SMA Home Storage Base Unit

£176.77

Base unit for the SMA Home Storage battery.
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SMA Home Storage Top Cover

£53.33

Optional top cover for the SMA Home Storage battery.
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Rolls S-Series LFP

£493.10

Rolls high performance S-Series Lithium-Iron-Phosphate (LiFePO4) batteries provide a compatible drop-in sealed lead-acid replacement with fast charging/discharging capability, compact case design and are up to 50% lighter than equivalent lead-acid battery models.
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Rolls VB Series Lithium Batteries

8 models available
From £202.18

The Rolls VB Series 12 and 24V batteries deliver a high‑specification lithium solution at a highly competitive price point and allow direct replacement for deep‑cycle lead‑acid, AGM and gel batteries with no system redesign required.
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Victron Lithium Battery 12.8V and 25.6V Smart

3 models available
From £567.41

Victron lithium-iron-phosphate (LiFePO4 or LFP) batteries offer a high level of safety and excellent performance at a reasonable price.
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Victron VE.Bus BMS V2

£129.15

The VE.Bus BMS V2 is a Battery Management System (BMS) designed to interface with and protect a single, or multiple Victron Lithium Battery Smart 12,8V & 25,6V (LiFePO4 or LFP) in systems that have Victron inverters or inverter/chargers with VE.Bus communication. It monitors and protects the batteries against over voltage and under voltage of any individual cell, and also over temperature or under temperature conditions.
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Victron Lynx Smart BMS

£541.58

The Lynx Smart BMS is a dedicated Battery Management System for Victron Lithium Smart Batteries. There are multiple BMS-es available for our Smart Lithium series of batteries, and the Lynx Smart is the most feature rich and complete option. It is available in two versions: 500A (with M8 busbar connections) and 1000A (with M10 busbar connections).
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Victron smallBMS

£43.66

The smallBMS is a simple and inexpensive alternative to the VE.Bus BMS, but does not have a VE.Bus interface
and is therefore not suitable for use with VE.Bus MultiPlus and Quattro inverter/chargers.
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Victron Lithium Battery Comms Cable Extension

£35.31

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Sunwoda OASIS L261

2 models available
From £44,706.51

The Sunwoda OASIS L261 is a modular, outdoor rated, high-security energy energy storage solution with 261kWH useable capacity. Designed to optimise commercial and industrial power management by enabling easy system scaling through parallel expansion, helping businesses lower electricity costs via peak-shaving and providing secure uninterrupted operations with emergency backup power.
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Sunwoda OASIS Flex

5 models available
From £98.53

The Sunwoda OASIS Flex provides a versatile indoor Commercial & Industrial (C&I) battery storage solution with modular scalability, intelligent high-performance management, and optimised high-rate output capacity.
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