DC40WA - Battery charger MAKITA - Free user manual and instructions

Product type	Battery charger
Brand	Makita
Model	DC40WA
Power supply	230 V AC (according to rating plate)
Compatible battery voltage	40 V max (Li-ion)
Number of simultaneous batteries	2
LED indicators	Green (ready), flashing blue (charge 0-80%), steady blue (80-100%), red (fault)
Recommended charging temperature	10 °C to 40 °C
Typical charging time	110 min (BL4020 2 Ah) to 420 min (BL4080F 8 Ah)
Wall mounting	Possible with 3 screws (fastening and hanging)
Gross weight (charger + battery)	Approximately 5.0 kg (11 lb)
Protection	Double insulation, automatic stop, protection against overheating and short circuit
Maintenance	Clean terminals with a blower; avoid solvents
Indoor use only	Yes
Battery compatibility	Makita Li-ion 40 V max (BL40xx series)
Warranty	See Makita conditions

Frequently Asked Questions - DC40WA MAKITA

What types of batteries can I charge with the DC40WA?

This charger is designed exclusively for Makita Li-ion 40 V max batteries (series BL4020, BL4025, BL4040, BL4050F, BL4080F). Never use other batteries, as they could explode.

How to charge a battery?

Plug the charger into a suitable AC outlet. Insert the battery into one of the slots until it clicks. The indicator changes from green to blue to indicate charging has started. Once finished, the indicator turns green again.

What do the LED indicators mean?

Steady green: ready to charge. Fast flashing blue: charging from 0 to 80%. Steady blue: charging from 80 to 100%. Red: defective battery or dirty terminals. Slow flashing green: delayed charge (battery too hot or too cold).

Can I charge two batteries at the same time?

Yes, the charger has two slots and can charge two batteries simultaneously. Each battery is managed independently with its own indicators.

What is the charging time?

The duration depends on capacity. Examples: BL4020 (2 Ah): 110 min; BL4040 (4 Ah): 210 min; BL4080F (8 Ah): 420 min. Ambient temperature (10-40 °C) and battery condition affect the time.

Can I mount the charger on the wall?

Yes, follow the wall mounting instructions. Use two screws to hang the charger and an additional screw to secure it at the top. The total weight of charger+battery can be up to 5 kg, make sure the wall is sturdy.

What should I do if the indicator remains red?

The red indicator indicates a defective battery or dirty terminals. Clean the charger and battery terminals with a blower. If the problem persists, the battery is likely worn or damaged and should be replaced.

What safety precautions should I observe?

Only use Makita rechargeable batteries. Do not charge in the presence of flammable gases, do not expose to rain. Unplug the charger before cleaning. Keep the cord away from walkways. Do not charge if the temperature is below 10 °C or above 40 °C.

Can I use a transformer or generator?

No, never use a step-up transformer, generator, or DC outlet. Only plug into an AC mains socket with the voltage indicated on the rating plate.

How to clean the charger?

Unplug the charger and remove the battery. Use a blower to remove dust from the terminals. Never use gasoline, thinner, or alcohol, as they could discolor or crack the housing.

USER MANUAL DC40WA MAKITA

Technical line drawing showing two mechanical components being processed into a multi-chamber housing (no text or symbols present)

Technical line drawing of a mechanical component with multiple slots and a close-up inset showing a screw (no text or symbols)

Fig.5

WARNING

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

Symbols

The followings show the symbols which may be used for the equipment. Be sure that you understand their meaning before use.
	Indoor use only.
	Read instruction manual.
	DOUBLE INSULATION
	Do not short battery.
	Do not expose battery to water or rain.
	Do not destroy battery by fire.
	Always recycle battery.

Li-ion

Only for EU countries

Due to the presence of hazardous components in the equipment, waste electrical and electronic equipment, accumulators and batteries may have a negative impact on the environment and human health.

Do not dispose of electrical and electronic appliances or batteries with household waste!

In accordance with the European Directive on waste electrical and electronic equipment and on accumulators and batteries and waste accumulators and batteries, as well as their adaptation to national law, waste electrical equipment, batteries and accumulators should be stored separately and delivered to a separate collection point for municipal waste, operating in accordance with the regulations on environmental protection.

This is indicated by the symbol of the crossed-out wheeled bin placed on the equipment.

▶ Fig.1

Ready to charge.

Delay charge (too hot or too cold battery).

Charging (0 - 80 %).

CAUTION

1. SAVE THESE INSTRUCTIONS – This manual contains important safety and operating instructions for battery charger.
2. Before using battery charger, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.
3. CAUTION – To reduce risk of injury, charge only Makita type rechargeable batteries. Other types of batteries may burst causing personal injury and damage.
4. Non-rechargeable batteries cannot be charged with this battery charger.
5. Use a power source with the voltage specified on the nameplate of the charger.
6. Do not charge the battery cartridge in presence of flammable liquids or gases.
7. Do not expose charger to rain, snow, or wet condition.
8. Never carry charger by cord or yank it to disconnect from receptacle.
9. Remove the battery from the charger when carrying the charger.

10. After charging or before attempting any maintenance or cleaning, unplug the charger from the power source. Pull by plug rather than cord whenever disconnecting charger.

11. Make sure cord is located so that it will not be stepped on, tripped over, or otherwise subjected to damage or stress.

12. Do not operate charger with damaged cord or plug. If the cord or plug is damaged, ask Makita authorized service center to replace it in order to avoid a hazard.
13. Do not operate or disassemble charger if it has received a sharp blow, been dropped, or otherwise damaged in any way; take it to a qualified serviceman. Incorrect use or reassembly may result in a risk of electric shock or fire.
14. Do not charge battery cartridge when room temperature is BELOW 10^ C ( 50^ F) or ABOVE 40^ C ( 104^ F). At the cold temperature, charging may not start.
15. Do not attempt to use a step-up transformer, an engine generator or DC power receptacle.
16. Do not allow anything to cover or clog the charger vents.
17. Do not plug or unplug the cord and insert or remove the battery with wet hands.
18. Never use gasoline, benzine, thinner, alcohol or the like to clean the charger. Discoloration, deformation or cracks may result.

Charging

This charger can charge two batteries at the same time.

1. Plug the battery charger into the proper AC voltage source. Charging lights will flash slowly in green color repeatedly.

2. Insert the battery cartridge into charger until it stops adjusting to the guide of charger.

▶ Fig.2

The terminal cover of the charger can be opened with inserting and closed with pulling out the battery cartridge.

1. When the battery cartridge is inserted, the charging light color will change from green to blue and charging will begin. The fast blue flashing light indicates charged condition in 0–80 % and the blue charging light will keep lighting up steadily indicate 80–100 %. The 80 % indication mentioned above is approximate value. The indication may differ according to battery temperature or battery condition.
2. With finish of charge, the charging light will change from blue one to green one.
3. After charging, remove the battery cartridge from charger and unplug the charger.

NOTE: Charging time varies by temperature (10°C (50°F)–40°C (104°F)) that battery cartridge is charged at and conditions of the battery cartridge, such as a battery cartridge which is new or has not been used for a long period of time.

Voltage	Number of cells	Li-ion battery cartridge	Capacity (Ah)	Charging time (Minutes)
40 V (max.) 10 BL4020 2 110
40 V (max.) 10 BL4025 2.5 130
40 V (max.) 10 BL4040 4 210
40 V (max.) 20 BL4050F 5 260
40 V (max.) 20 BL4080F 8 420

NOTICE: The battery charger is for charging Makita-battery cartridge. Never use it for other purposes or for other manufacturer's batteries.

NOTE: If the charging light flashes slowly in blue color, charging may not start due to the condition of the battery cartridge as below:

— Battery cartridge from just-operated tool or battery cartridge that has been left in a location exposed to direct sunlight for a long time.

— Battery cartridge that has been left for a long time in a location exposed to cold air.

NOTE: When the battery cartridge is too hot, charging does not begin until the battery cartridge temperature reaches the degree at which charging is possible.

NOTE: If the charging light changes to red color, charging is not possible. The terminals on the charger or battery cartridge are clogged with dust or the battery cartridge is worn out or damaged.

Wall mounting

WARNING: Make sure to use two screws for hanging the charger on the wall, and anchor the charger on the wall with another screw. Otherwise the charger may fall and cause serious injury.

WARNING: Always be sure that the charger is unplugged and all the batteries are removed from the charger before performing wall mounting work.

⚠ WARNING: Follow the steps instructed in this manual, and complete the whole procedures at once. The charger may fall and cause injury or damage if you stop the work in the half way.

WARNING: Check tightness of the screws on regular basis. Otherwise the charger may fall because of loosen screw.

WARNING: Clean the terminal parts of the charger on regular basis with an air duster etc.

⚠️CAUTION: Carefully choose a stable wall for mounting the charger. Make sure there is no hindrance to mounting work or charging operation. The gross weight of the charger and battery reach approximately 5.0 kg (11 lbs). Provide sufficient reinforcement for the wall if necessary.

⚠️CAUTION: Be careful not to drop the battery cartridge when inserting or removing the battery from the wall-mounted charger. Hold the battery cartridge firmly and keep a stable posture.

You can mount the charger on the wall. Make a clearance around the charger as shown in the figure.

▶ Fig.3

NOTE: Things you need to prepare:

— Two screws - hanging the charger

Screw size : 4.0 mm x equal to or more than 20 mm.

Screw head size : Less than 9.0 mm and less than 3.5 mm thickness.

— One screw (4.0 mm x equal to or more than 25 mm) - for anchoring the charger.

— Tools - for tightening screws

1. Fix two screws for hanging on the wall.

2. Hang the charger on the wall using the hook on the back.

▶ Fig.4

1. Fix the charger by tightening an anchor screw at the top of the charger.

▶ Fig.5

AVERTISSEMENT