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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
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    • 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.


    • 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.


    • 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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    12 products

    • BYD Battery-Box Premium HVS/HVM

      BYD Battery-Box Premium HVS/HVM

      4 models available
      From £350.39

      The BYD Battery-Box Premium HVS and HVM are modular high voltage lithium iron phosphate (LFP) battery packs for use with an external inverter.

    • BYD Battery Box Premium LVS

      BYD Battery Box Premium LVS

      2 models available
      From £302.37

      The BYD Battery-Box Premium LVS is a modular 48V lithium iron phosphate (LFP) battery pack for use with an external inverter.

    • BYD Battery-Box Premium LVL

      BYD Battery-Box Premium LVL


      The BYD Battery-Box Premium LVL is a high capacity 48V lithium iron phosphate (LFP) battery for use with an external inverter.

    • BYD Battery-Box Premium LVL/LVS BMU

      BYD Battery-Box Premium LVL/LVS BMU

      2 models available
      From £106.41

      BMU (battery management unit) for use with BYD Battery-Box Premium LVL and LVS battery systems.

    • BYD Battery-Box Premium LVS Connectors

      BYD Battery-Box Premium LVS Connectors

      3 models available
      From £27.20

      DC battery connectors for the BYD Battery-Box Premium LVS. 1 pair required per stack for connection to the LVS PDU (power distribution unit).

    • Rolls S-Series LFP ESS

      Rolls S-Series LFP ESS

      2 models available
      From £741.02

      Rolls 48V 100Ah S-Series Lithium-Iron-Phosphate (LiFePO4) Energy Storage System (ESS) models offers a fully integrated and scalable energy storage solution with built-in LCD screen & controls, secondary protections in a rack-mount [19”(482mm)] 4U case design.

    • Rolls S-Series LFP

      Rolls S-Series LFP


      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.

    • Victron Lithium Battery 12.8V and 25.6V Smart

      Victron Lithium Battery 12.8V and 25.6V Smart

      5 models available
      From £638.73

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

    • Victron VE.Bus BMS V2

      Victron VE.Bus BMS V2


      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.

    • Victron smallBMS

      Victron smallBMS


      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.

    • Victron Lynx Smart BMS

      Victron Lynx Smart BMS


      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).

    *see manufacturer's documentation for further information