Question about Makita 2 Bl1830 18v Battery,dc18ra Charger Lxt Fr Drill

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Charger not powering up, fuse is good?? what the f---?

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Internal board fuse checked? This may/may not help?

Makita 1850 battery charger FIX. A friend asked me to check his charger unit which had failed after it had been connected to a portable petrol generator that incorrectly generated 317 Volts AC and not the usual 240 Volt AC. On the charger circuit board next to the transformer wire connection is a component marked F2; this is a 2.5Amp fuse covered with heat-shrink sleeving. This fuse had ruptured/blown. Also blown was Transistor Q1, a ''P'' Mosfet labelled IRF9Z24N and Schottky Diode D9 labelled SR560. Replacing these 3 items got the charger working again. NB Resistor R31 is only 0.1ohm - don't assume it's gone short circuit! NB. I'd presume that most other Makita chargers will have this heat-shrink sleeving ''camoflaged'' fuse on the input of the circuit board and it would definitely be worth checking if the charger has stopped working. Regards Roy

Posted on May 16, 2010

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If it's under warranty let them deal with it. But,more than likly, you have a problem with the circuit board ( you did check your power source ) and that's not a handyman fix unless you happen to have the tools to trace the system and find the problem. You can try to get a PDF break down on that charger by going to Makita's web site and entering the model # but unless your a tech. it might look like gibberish . Check ebay for a good used one.

Posted on Oct 24, 2009

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1 Answer

I have garmin nuvi760 gps when ever I hook it up in my car fuse in car charger cable blown up, I changed the fuse several time ,it does the same thing,it takes 3amp 250V fuse.I realy need help.


You need to determine if it is a charger problem or a problem in the Nuvi.

If you have the AC wall charger, plug that into your Nuvi. If the unit boots normally, then you can discount that there is a problem with the Nuvi. Does the Nuvi power up on its own internal battery with the charger disconnected? When you change the fuse and it blows, is the charger plugged into the Nuvi?

Try changing the fuse and powering up the charger without it being plugged into the Nuvi. If the fuse still blows, then the fault is with the charger. Please also be aware that the charger converts +12VDC from the car battery to +5VDC to power the Nuvi. Some chargers can fail and provide +12VDC directly to the Nuvi. This can damage the Nuvi and will certainly blow the fuse.

Sep 23, 2015 | Garmin nuvi GPS

3 Answers

My dads scooter won't charge. No light comes on indicating it is even charging. Is there any way to check charger operation?


Good day,try visiting where the scooter was made & download a user guide for the scooter model you have.It could be something simple,like a fuse blown in the charger.Never rely on a new fuse will work,better to take the same rating fuse out of something that you know works with the fuse you need.I hope I have helped,Colin

Mar 04, 2013 | Electric Mobility 4 Wheel Power Electric...

1 Answer

My 2006 VW Beetle continuously blows the Accessory fuse utilized for the power port for the cigarette lighter and underneath the center console. The proper fuse was replaced. Only my phone plugged in when...


Hi Troy,

Without seeing the ports of the car and the plug of your charger, it would be difficult to diagnose with any certainty. I do have a suggestion however. Your note suggests that other devices do not cause the fuse to blow when they are used - it is only the charger for the phone. Since the charger works in other cars, it is probably not an overload condition due to a defective charger, but more likely a mismatched set of contacts between the plug and power port in your car when the two are mated. Some cars have slightly different sized power ports that can be either too tight or too loose for some plugs. Too tight ports could be causing parts internal to the charger's plug or car's power port to short together and blow the fuse.

We can get around this be using a different plug. The easiest way is to find a cord set that will plug into your car's power port and provides a simple extension for 1, 2 or 3 outlets. These can be found in auto parts stores and the automotive departments of stores like K-Mart, Sears, etc. Some examples look like these:


8_27_2012_9_46_15_pm.jpg

8_27_2012_9_46_33_pm.jpg
Insert the plug into the power port - and check that the fuse does not blow by checking the fuse - not by plugging something into the the outlet on the cord. If the fuse remains good, then it is safe to assume that the problem with your charger and the car's power port has been eliminated, and the car's power is available at each of the outlets of the new cord.

Try plugging the charger into the outlet of the new cord. If all is well, the charger should be working as expected. What we have done is removed the charger / car power port combination from the equation, by providing a different combination to do the same thing - but without the same physical connection that causes the fuse to blow.

You could achieve the same results by changing the charger plug under the right conditions - but many chargers now a days have circuitry inside them that change the car's 12 volts to something different. If you can find the voltage out of the charger and are able to match it with another - it must be the same voltage, polarity, current and phone power connector of course - it should work, too. You must be absolutely sure of the power requirements and your rewiring - if not, stick with the addition of a cord described above.

I hope this helps & good luck!

Aug 27, 2012 | 2000 Volkswagen Beetle

1 Answer

Can't get charger ports to work all fuses are good


The rear auxilliary power outlet is powered by a 20Amp fuse located
in the right-side instrument panel fuse block. It is marked "RR PWR"

The front Auxilliary power outlet and the Cicarette lighter are
powered by the CIGAR/DLC/APO FRT fuse which is also located in the
right side instrument panel fuse block. This one is a 15Amp fuse.

If both of these fuses are good, then you either have wiring harness problems, or all of your outlets are unplugged.

Jan 07, 2011 | 2002 Oldsmobile Silhouette

1 Answer

The chair won't power on and the batteries won't charge. I know the charger works because I have tried it on another chair. When I plug the charger into the chair the light stays green and nothing...


After you changed the batteries, did the power chair sit unused for several weeks? It sounds more like a battery or fuse issue than a charger issue. If there are blinking lights when you try to turn the power chair on (not while attached to the charger), or it comes on then goes back off by itself quickly, there may be something else going on.
1- The green light on the charger is telling you that the batteries are not accepting any more power, either they are fully charged or they have oxidized/gone solid from sitting without being put on the charger for too long.
2-The scrolling lights on the controller when the charger is plugged in just confirms that the chair is connected to the charger, so it sounds like everything is connected properly and working. The horn will work fine when it is attached to the charger as it is getting power from the wall outlet.
3- If it was a fuse issue, the lights would not come on at all when the charger is NOT attached, even after the battery has been fully charged, which is what it sounds like is going on. The fuses can blow if you operate the chair on a slick surface or one of the drive tires spin out. The batteries will be fully charged but because the circuit is not complete, the chair will not power on.

I recommend checking the fuses and changing them if necessary. You are in luck because this is a relatively easy and inexpensive fix as they are standard automotive fuses found at any auto parts store or even Walmart for around $2 each (you need 2). The fuses are located inside the gray battery covers under the seat, attached to the leads connected to the battery cables. The straps holding the covers on the batteries are tight, you may want to use a flat head screwdriver to help release the clips. While you are down there, inspect the tread on the tires, if it is worn or slick it may need to be replaced for safety.
I hope this information is helpful to you- good luck!

Dec 17, 2010 | NRS Hoveround MPV 5 - Used Power...

1 Answer

When I plug the battery in for charging, the charge light does not come on. only the power light on the charger


There are several solutions to this problem which I have seen twice in my technical career.
You indicated that the power light on the charger comes on which indicates it is plugged into a working AC wall outlet. Check to make sure the power switch of the charger is turned on. Make sure that the round charger plug is plugged all the way into the battery charger receptacle on the battery box.
Next, check the on-board fuse AND the circuit breaker. I have had this little 5 Amp automotive style fuse burn out on several go go's and the charger does not work. Pull back the cover over the charger port and look for the fuse in its center slot. With a good set of fingernails it can be pulled straight out and inspected. Use fine needle nose pliers if necessary. I am assuming the go go runs and the push-button for the 15 Amp circuit breaker is pushed in. If it is out and the go go is not running reset the breaker by pushing the white button in. There is a clear rubber boot over the button. In my experience, the 5 amp auto fuse is your most likely problem. By holding it up to the light you can see if the fuse wire inside is burnt causing an open circuit. Most auto and hardware stores have this fuse in stock. Bring the old one to the store for comparison. It is a 5 Amp ATO fuse.
The question my clients often ask is what caused the charger circuit to overheat and the fuse to blow? The simple answer is that the two 12 Amp hour batteries in the go go are probably old and weak. This causes the charger to work too hard and the circuit to overheat and the fuse to blow. These small batteries have a short life span of between 6 months and 1 year depending on type. I recommend the AGM (advanced glass mat) batteries for longevity. Also make sure the charger being used on the chair is the 2 Amp small charger that came with the chair (There is a label on the charger to verify this). A larger charger will burn the batteries(shortening their life) and burn out the 5 Amp on-board fuse. Hope this helps.

Oct 31, 2010 | Pride Mobility Products Go Go Ultra X 3...

1 Answer

Any kind of charger that i attempt to plug into my cigarett lighter don't charge the devices, does this mean that the fuse has blown and needs replacing? thanks in advance!


The charger should have a light which shows that it has power. Check power at the socket by operating the cigarette lighter. If the lighter heats up you have power at the lighter. If not, locate the fuse box and check the lighter fuse. If the fuse is intact and you have power at the socket the charger is faulty.
Bear in mind chargers also have a fuse in the connector nose. Most unscrew at the nose and the fuse can be removed from the charger.

Sep 04, 2010 | Ford Focus Cars & Trucks

1 Answer

Fuse bl;ows when turned on


Hi. Is it the line fuse or the output fuse that blows? Does it blow if it is not connected to the machine.
It is probably best in the long run if you purchase a new charger for your machine. Some older chargers are simple regulation circuits, and most of the newer ones operate on a high frequency switching power supply mode, and have complex circuitry.
If you can get your old charger fixed by an electronics serviceman, it would be a good idea to test it by recording a battery charge with a data logger, to make sure it is charging at the correct voltage levels.
Buying a new charger might mean that you will save destroying a set of batteries as well.
We have here testers for batteries and chargers where the data logger does a voltage test every 10 seconds. We can record a charger for 4 days, and download it to a PC. We have found a few chargers that overcharge. This will eventually destroy the batteries.
Good luck. Neil.

Jun 02, 2010 | RTO Mobil Line Mobility Scooter Chair...

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