EnerSys unveils first Lithium-ion battery for motive power

February 28, 2013 // By Paul Buckley
EnerSys has extended its class-leading Hawker XFC range with two new models, including its first design with advanced Lithium-Ion technology for use in the motive power sector.

Both batteries are designed for low-duty pallet truck applications where operators want to maintain the availability of the equipment without the complexity and cost of additional infrastructure. The batteries can be recharged at any time irrespective of the state of charge without degrading their long-term performance or reliability. Both technologies have an on-board charger and are ideal for applications with duty cycles lasting up to 45 minutes where periods of inactivity can be used for rapid opportunity charging. This means they are suitable for intermittent or sporadic handling requirements such as offloading delivery vehicles or replenishing displays in busy retail environments.

The Hawker XFC-Li claims to be the first motive power battery from EnerSys to utilise advanced lithium-ion technology. It is a 24 V battery with 38 Ah capacity that incorporates cells with a lithium iron phosphate (LiFePO4) cathode and graphite anode with an inherently safe lithium-ion electrolyte. This delivers significant benefits compared with conventional units including greater power density, longer pack life and excellent performance at low temperatures. The battery can be fully recharged in less than one hour from 80 per cent depth of discharge and short, opportunity charges are readily accepted due to its low internal resistance.

Each Hawker XFC-Li is equipped with a battery management system (BMS) for continuous monitoring of the individual cells to ensure correct use and safe operation with protection against over temperature, overcharge, over voltage, under voltage and short circuits. The BMS also incorporates cell balancing technology which promotes maximum performance throughout the battery’s service life. An on-board LED provides state of charge data while links with external monitoring and management systems can be enabled by an integrated CAN bus.

The second new battery is a 24 V model with 82 Ah capacity which is based on the same proven thin plate pure lead (TPPL) technology used in the existing Hawker XFC range. Its blocs incorporate pure lead plates which are much