If you need a spare battery pack or charger, buy only genuine items authorised by the e-cycle or drive system manufacturer. Using a reputable supplier will reduce the risk of being sold counterfeit items. Genuine battery packs and chargers may cost more, but using third-party items that may not be safe or compatible could put your life at risk or destroy your home. Be cautious about buying used e-cycle battery packs. Whether or not any physical damage is visible, the battery could already have been damaged or abused and pose an increased fire risk.