The battery is charged but the unit isn't turning on. Remove the battery from the unit and examine the prongs and connection on both the battery and the unit to make sure they aren't damaged. Damaged prongs can cause the unit not to start up due to a faulty connection. Related articles How do I assemble my 24V-TLR-LTE? Has the battery reached its full charge? Can the blades on the 24V-TLR-LTE be replaced? Will any battery fit onto my unit? Is there a faster charger to charge my battery?