Question about Makita Universal Charger DC1804

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My charger only charges for 3 min then green light comes on saying it's fully charged

Looking for new one but all to expensive for me

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You could disassemble the battery and replace only the small 6 or 8 accumulators inside. Pay attention to the correct wirings. I replace the original accus NiMh with Li-ion and another charger, off course.

Posted on Nov 20, 2014

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Ebay?

Posted on Nov 19, 2014

Testimonial: "Been there all day, price of charger is just about same price as drills. Cheers though"

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The operating instructions say that after 16 hours the red power/charge indicator light would go out, indicating the batteries are fully charged. After 3 days the red light on my unit is still on. The...


If it is new, send it back, but make sure you carefully read the instructions first. If is says the indicator light is red on charging and green when fully charged and it doesn't do that then the batteries or the charger are defective.

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Have 2 lights on charger. One power, the other says charging. Both come on but after about 15 mins the charging light goes off. Does this mean the battery is charged?


so no lights go green, it depends on the charger however in my experience all of the charger i have repaired have a green light to show fully charge, is it possible to try another charger ? this could imply a faultly charger , can you check the battery voltage anywhere from 26 volts DC to 28.3 volts DC no more otherwise you shorten the life of the battery. You really want the voltage level to be near 28 volts that way you will get maximum distance as well as prolonged life of the batteries in question.


Regards
Please leave feedback.

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I simply need to know what the 3 colored LEDs on the handle represent. There is a red one, an orange(yellow) one, and a green one. I lost the manual and need to know when the battery is fully charged. ...


Red, Yellow, Green are the battery level indicators, Red being the lowest like a fuel gauge. If the green comes on right away after plugging in the charger then it must not indicate the charge cycle. If its a 3Ah battery whats the charger output amperage? Then you could just do the math to figure out how long it would take to charge that battery to full with the output. Otherwise it shouldn't hurt it to leave it plugged in overnight or at least a few hours to charge it.

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My new 18v lithium batteries run out of charge after about 10 mins of continuous use is this about roght as my old Nicad batteries would go for about 20 mins this is using them with a drill driver with a...


This is not right. They should last much longer then that. I have one of the more expensive 18V lithium batteries (the one with the button on it that tells you if it needs charging or not) and I can use mine almost all day before it needs to be recharged. I do construction work and I use my Ryobi products almost all day. Either both batteries are bad (I don't believe that is the case) or the charger is not charging them all the way to a full charge. With this charger, you do need to make sure that you remove the batteries as soon as the green light comes on. It is not good on these batteries to stay charging after they are fully charged. You also should not leave the charger plugged in without any batteries charging.Please tell me more about the charger. When you plug in the charger, does the red light come on? When you plug in a battery, does the red light stay bright and the green light blink? Does the red light go off and the green light stay on bright when you remove it from the charger?
If the charger is not working correctly, then return it for a new one.

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Suspect the charger is shot on a seldom used like new Companion II. The batteries are at 3 volts but the charger red light wont illuminate when plugged in. Green light comes on, but not the red. I did see...


MStrong The charger will not charge batteries that are reading that low Replace the batteries and try the charger again. Remember to always charge before use and never charge longer than 12-16 hours. Get into the habit of charging overnite on scooters used everyday and once a week on seldomly used scooters always sore the scooter fully charged and if storing for a longer time remove the batteries and store fully charged. ope this helps you

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Batteries don't charge. I have a new battery, and neither of the old or new batteries work in the charger. I get flashing lights only, sometimes red, sometimes green, but in the end, the battery isn't...


Dust getting in the charger is a problem, Try blowing it out with a moisture-free dust remover, found at most any store. Green flashing means improper power, due to dust or power from the outlet, try a differant wall outlet. Red flashing means the charger or battery is to hot and must cool down before it will charge. The charger will not charge a battery if the lights are flashing. Solid Red light means it is charging and solid green light means it is charged. Plug the charger in first before putting the battery on the charger. If the charger has been droped or hit the floor the coil inside could have broke loose and dammaged the charger requiring it to be replaced.

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The control systems on power mobility equipment have a "prevent" circuit that immobilizes the equipment while it is plugged into a charger, so folks won't take off with it plugged into the wall outlet. When you turn it on when plugged into a charger, the display will flash constantly, or sweep constantly, depending on the manufacturer. This is normal. Your off-board charger should have a red light to indicate power to the charger, and another light for the charge status. Yellowish means it is charging, when it turns green, you are fully charged. If the status light is green all the time, that is an indication that the charger is not functioning properly, or that the batteries are below a chargeable state. Check charger output, which should be 26-28 volts dc, and each battery should show at least a 12 volt reading, but around 13.5 volts with a full charge. If one or both of the batteries drops below 12 volts after a short period of time, it's time for a fresh pair. Fully charge new ones before using the chair.

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