DeWalt DHS780 Original Instructions Manual page 36

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charger if the fan does not operate properly or if ventilation slots are blocked. Do not permit
foreign objects to enter the interior of the charger.
Electronic Protection System
XR Li-Ion tools are designed with an Electronic Protection System that will protect the battery
pack against overloading, overheating or deep discharge.
The tool will automatically turn off if the Electronic Protection System engages. If this occurs,
place the lithium-ion battery pack on the charger until it is fully charged.
Wall Mounting
These chargers are designed to be wall mountable or to sit upright on a table or work surface.
If wall mounting, locate the charger within reach of an electrical outlet, and away from a
corner or other obstructions which may impede air flow. Use the back of the charger as a
template for the location of the mounting screws on the wall. Mount the charger securely
using drywall screws (purchased separately) at least 25.4 mm long with a screw head diameter
of 7–9 mm, screwed into wood to an optimal depth leaving approximately 5.5 mm of the
screw exposed. Align the slots on the back of the charger with the exposed screws and fully
engage them in the slots.
Charger Cleaning Instructions

WARNING: Shock hazard. Disconnect the charger from the AC outlet before
cleaning. Dirt and grease may be removed from the exterior of the charger using a cloth
or soft non-metallic brush. Do not use water or any cleaning solutions. Never let any liquid
get inside the tool; never immerse any part of the tool into a liquid.
Battery Packs
Important Safety Instructions for All Battery Packs
When ordering replacement battery packs, be sure to include catalog number and voltage.
The battery pack is not fully charged out of the carton. Before using the battery pack and
charger, read the safety instructions below. Then follow charging procedures outlined.
READ ALL INSTRUCTIONS
• Do not charge or use battery in explosive atmospheres, such as in the presence of
flammable liquids, gases or dust. Inserting or removing the battery from the charger may
ignite the dust or fumes.
• Never force battery pack into charger. Do not modify battery pack in any way to
fit into a non-compatible charger as battery pack may rupture causing serious
personal injury.
• Charge the battery packs only in D WALT chargers.
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• DO NOT splash or immerse in water or other liquids.
• Do not store or use the tool and battery pack in locations where the temperature
may reach or exceed 40 ˚C (104 ˚F) (such as outside sheds or metal buildings in
summer).
• Do not incinerate the battery pack even if it is severely damaged or is completely
worn out. The battery pack can explode in a fire. Toxic fumes and materials are created when
lithium-ion battery packs are burned.
• If battery contents come into contact with the skin, immediately wash area with
mild soap and water. If battery liquid gets into the eye, rinse water over the open eye for
15 minutes or until irritation ceases. If medical attention is needed, the battery electrolyte is
composed of a mixture of liquid organic carbonates and lithium salts.
• Contents of opened battery cells may cause respiratory irritation. Provide fresh air. If
symptoms persists, seek medical attention.

WARNING: Burn hazard. Battery liquid may be flammable if exposed to spark or flame.

WARNING: Never attempt to open the battery pack for any reason. If battery pack case
is cracked or damaged, do not insert into charger. Do not crush, drop or damage battery
pack. Do not use a battery pack or charger that has received a sharp blow, been dropped,
run over or damaged in any way (i.e., pierced with a nail, hit with a hammer, stepped on).
Electric shock or electrocution may result. Damaged battery packs should be returned to
service centre for recycling.

WARNING: Fire hazard. Do not store or carry the battery pack so that metal
objects can contact exposed battery terminals. For example, do not place the battery
pack in aprons, pockets, tool boxes, product kit boxes, drawers, etc., with loose nails,
screws, keys, etc.
Transportation

WARNING: Fire hazard. Transporting batteries can possibly cause fire if the battery
terminals inadvertently come in contact with conductive materials. When transporting
batteries, make sure that the battery terminals are protected and well insulated from
materials that could contact them and cause a short circuit.
D WALT batteries comply with all applicable shipping regulations as prescribed by industry
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and legal standards which include UN Recommendations on the Transport of Dangerous
Goods; International Air Transport Association (IATA) Dangerous Goods Regulations,
International Maritime Dangerous Goods (IMDG) Regulations, and the European Agreement
Concerning The International Carriage of Dangerous Goods by Road (ADR). Lithium-ion cells
and batteries have been tested to section 38.3 of the UN Recommendations on the Transport
of Dangerous Goods Manual of Tests and Criteria.
In most instances, shipping a D WALT battery pack will be excepted from being classified as a
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fully regulated Class 9 Hazardous Material. In general, only shipments containing a lithium-ion
battery with an energy rating greater than 100 Watt Hours (Wh) will require being shipped
as fully regulated Class 9. All lithium-ion batteries have the Watt Hour rating marked on the
pack. Furthermore, due to regulation complexities, D
lithium-ion battery packs alone regardless of Watt Hour rating. Shipments of tools with
34
WALT does not recommend air shipping
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batteries (combo kits) can be air shipped as excepted if the Watt Hour rating of the battery
pack is no greater than 100 Whr.
Regardless of whether a shipment is considered excepted or fully regulated, it is the
shipper's responsibility to consult the latest regulations for packaging, labeling/marking and
documentation requirements.
The information provided in this section of the manual is provided in good faith and believed
to be accurate at the time the document was created. However, no warranty, expressed or
implied, is given. It is the buyer's responsibility to ensure that its activities comply with the
applicable regulations.
Transporting the FLEXVOLT Battery
TM
The D WALT FLEXVOLT TM battery has two modes: Use and Transport.
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Use Mode: When the FLEXVOLT battery stands alone or is in a D
TM
operate as an 18V battery. When the FLEXVOLT
operate as a 54V battery.
Transport Mode: When the cap is attached to the FLEXVOLT
Transport mode. Keep the cap for shipping.
When in Transport mode, strings of cells are electrically
disconnected within the pack resulting in 3 batteries with a
lower Watt hour (Wh) rating as compared to 1 battery with a
higher Watt hour rating. This increased quantity of 3 batteries
with the lower Watt hour rating can exempt the pack from certain shipping regulations that
are imposed upon the higher Watt hour batteries.
For example, the Transport Wh rating might indicate
3 x 36 Wh, meaning 3 batteries of 36 Wh each. The Use
Wh rating might indicate 108 Wh (1 battery implied).
Storage Recommendations
1. The best storage place is one that is cool and dry away from direct sunlight and excess
heat or cold. For optimum battery performance and life, store battery packs at room
temperature when not in use.
2. For long storage, it is recommended to store a fully charged battery pack in a cool, dry
place out of the charger for optimal results.
nOTE: Battery packs should not be stored completely depleted of charge. The battery pack
will need to be recharged before use.
Labels on Charger and Battery Pack
In addition to the pictographs used in this manual, the labels on the charger and the battery
pack may show the following pictographs:
Read instruction manual before use.
See Technical Data for charging time.
Do not probe with conductive objects.
Do not charge damaged battery packs.
Do not expose to water.
Have defective cords replaced immediately.
Charge only between 4 ˚C and 40 ˚C.
Only for indoor use.
Discard the battery pack with due care for the environment.
Charge D WALT battery packs only with designated D
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battery packs other than the designated D
may make them burst or lead to other dangerous situations.
Do not incinerate the battery pack.
USE (without transport cap). Example: Wh rating indicates 108 Wh (1 battery with
108 Wh).
TRANSPORT (with built-in transport cap). Example: Wh rating indicates 3 x 36 Wh
(3 batteries of 36 Wh).
Battery Type
The DHS780 operates on two 54 volt battery packs.
These battery packs may be used: DCB546, DCB547. Refer to Technical Data for
more information.
WALT 18V product, it will
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TM battery is in a 54V or a 2x 54V product, it will
battery, the battery is in
TM
Example of Use and Transport Label Marking
WALT chargers. Charging
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WALT batteries with a D WALT charger
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