Doosan DX60R Shop Manual page 53

Boost Starting or Charging Engine
Batteries
If any mistake is made in the method of connecting the booster
cables, it may cause an explosion or fire. Always do the
following:
• Turn off all electrical equipment before connecting
leads to the battery. This includes electrical switches
on the battery charger or boost starting equipment.
• When boost starting from another machine or vehicle
do not allow the two machines to touch.
Wear safety glasses or goggles while required
battery connections are made.
• Connect positive cable first when installing cables
and disconnect the negative cable first when
removing them. The final cable connection, at the
metal frame of the machine being charged or boost
started, should be as far away from the batteries as
possible.
Track Excavator Safety
Figure 50
HAOA310L
SP001614
Page 45