Eliminate downtime with the ability to charge batteries in your vehicle while driving to work or on a jobsite. This heavy-duty vehicle charger is compatible with 7.2V-18V NiCd/NiMH/Li-Ion and will charge the batteries in 1 hour or less. The automatic shut-off protects excessive discharge of the vehicle's battery as well. This item is a replacement of Dewalt DW9109 Vehicle Charger