Blackdecker slide battery packs li ion blackdecker bl2018 this li ion slide pack battery from blackdecker holds its charge while not is use so does not require charging before each application the lithium ion technology delivers the same great performance of nicd batteries but is lighter and more compact suitable for use with all blackdecker 18v li ion power and garden tools blackdecker bl2018 xj slide battery pack 18v 20ah li ion