A recall notice for Power Jump Starters supplied by JAS Oceania Pty Ltd sold nationally and online due to a manufacturing defect with the lithium batteries which may overheat and catch fire which could result in property damage, personal injury or death.
https://www.productsafety.gov.au/recall/jas-oceania-pty-ltd-powercon-jump-starters
Sounds like the Samsung Galaxy Note 7 all over again.