Question about Makita 18V LXT Lithium - Ion Cordless Impact Driver Kit Model BTD140

2 Answers

Can you jump a battery without a charged battery? both of mine are dead.

Posted by on

  • pdvellucci Jul 15, 2009

    Thanks for the response. Not to happy with Makita though. The drill is great but I know several other people with battery issues too, and shortly after the one year mark. Two dead in a year and a half? If I buy a new kit it won't be from them. Thanks for your time though.

  • David Ford
    David Ford May 11, 2010

    I am not exactly sure what you are asking but I would contact Makita and see what they do. They havae a good warranty and you might be able to get 2 new ones



2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 20 times.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 9 Answers

If you have been a bad boy and managed to short the battery by using it for non-proscribed purposes, the fusible link will blow (kind of like a fuse)
To fix it, open up the battery (use a Torx 10 security bit, or a small flathead in a pinch) On the battery connection nearest the spring-loaded white catch there is a small bridge of metal with a hole in the center. If this is melted you can solder it back together by sanding the two pieces and putting a glob of solder on them. This will void your warranty (duh!) and remove the battery's fuse protection, but it WILL work again.
If the link is intact and nothing else is obviously wrong, you almost certainly have a bad cell. I recommend pulling out the bad cell ( it will be the one that does not read between 2.5 - 4 vdc) and replacing it with one from another dud battery- this requires some fudging and re-soldering.
Or do what I did, pull the cell, toss the electronics and the short pink wire, add a cigarette lighter socket and voila! you have a portable power supply giving around 14 volts. Charge it up by wiring two cigarette lighter male ends together (check polarity , + to + and - to -) and plug it into your car, but only while it is running or you will be charging your car battery with it!
Hope that helps.
Matt Binns
If your battery reads well below 10-12volts….
Try charging the battery with a car charger set on low (2 amps max) or a wall transformer from a phone or some such with a 12vdc output (make sure it is 12vdc not 12vac) You will need to know which of the charger wires is pos and neg, be careful not to short the battery as this will blow the fusible link. Connect + to + using jumper clips or stiff wire jammed into the battery contacts.
Once you get the battery over 10-12 volts the charger will normally accept the battery.
You can jump one good battery to the bad to do this, but in all cases watch out that the wires do not get hot, as this is a BAD sign, often a minute or two will be enough.
Of course you may have a dodgy charger, they are not robust at all. 
The fans also ****, noisy and sometimes they quit, causing the charger to quit too.

Warning, these batteries pack a very careful and watch out for shorts, hot wires and exploding cells!
Matt Binns

Posted on Aug 18, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 32 Answers

Makita carries a one year warranty free replacement and an extended two year if you purchased it when you bought the tool. No, you cannot jump it as you will kill it for sure. Make sure you charger is working properly, Green light flashing means improper power from your outlet or the charger has alot of dust in it and is running to hot, especially if the fan is not running the red light will flash. Blow it out with a moisture-free dust remover and try again. Plug the charger in first before putting the battery on. If the red and green light flash at the same time than the battery is bad. Solid red light means it is charging, solid green light means it is charged. If they are dead it is not cost affective to buy two new ones, as for a little more you can get a new kit and extra tool out of the deal w/ a new charger. Good Luck

Posted on Jul 14, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Jump start

I would say you never checked to see if the battery is any good

I most likely is dead or below 12.6 volts & you never jump a dead
battery,you try charging it

Jumping is not charging a battery,you need to own a battery charger

If the battery keeps draining or won't hold a charge you need
a new one,then if the problem exists you have someone do a
Parasitic Current Test to find out which circuit is staying on

Aug 27, 2013 | Infiniti Q45 Cars & Trucks

4 Answers

Reversed polarity on jump start. now wont go into gear or hold charge

OLder cars YEs you can jump it without a battery. But in newer cars that use computers and advanced Eltronic ignition/timing/ful injection you have to have power to the cars computer. without a good battery the car will not run.---------------------------------------------------------------------------------
Renault CAN Clip

Feb 01, 2013 | 2001 Kia Rio

1 Answer

After jumping a dead battery the car will lose power and die while driving. It will however sit and idle without a problem. I did try testing the alternator by removing the positive lead from the battery...

You never jump a dead battery
That is an unsafe act and could
result in an explosion

You must charge any battery fully,
to start any diagnostic proceedure

You never remove either battery cables,
while a vehicle is running,another practice
that will bite you sooner than later

It sounds as though the battery is not
capable of taking a charge and offers
too much resistance to run the car hooked up

Mar 22, 2011 | 1989 Dodge Colt Vista

1 Answer

Batt dead jump start does not seem to charge

Sounds like a dead or shorted cell battery. Charging system is probably working but is showing overcharge since it is trying to charge a brick. Replace the battery and all should be well.

Jun 02, 2010 | Toro Lawn Mower With Toro Power Tools

1 Answer

Just bought a new battery.Whenever i turn anything on a/c,radio,headlights,the red charge lite comes on.Wont start without a jump.When it was running i took the terminals off the battery & nothing...

Never take the cable off when running. Its so hard on the voltage reg. And the alternator. Take the alternator and get it tested free at auto-zone or O rilleys. they test mine free all the time. Hope this is helpfull .. Sawdust46

Aug 18, 2009 | 1987 Chrysler Fifth Avenue

2 Answers

Batter won't stay up after jumping it off

Take the battery to an auto parts store and have them test it, most do this for free. If you can, take the alternator with you. If your able to keep the car running after the jump, try to drive it to the auotparts store for the testing.

Aug 07, 2009 | 1998 Volvo V70

1 Answer

Battery charged but will not start without jump

Have your alternator checked at one of the parts store around your area. They will check it for free. The next thing would be to have your battery checked. If you need a jump after the battery has been charged, you may have a dead cell. The alternator charging the battery....will not charge the battery for the next start.

Mar 29, 2009 | 1994 Cadillac Eldorado

Not finding what you are looking for?
Makita 18V LXT Lithium - Ion Cordless Impact Driver Kit Model BTD140 Logo

323 people viewed this question

Ask a Question

Usually answered in minutes!

Top Makita Drills Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 2 Expert

112 Answers

John Trevino

Level 3 Expert

1388 Answers

Are you a Makita Drill Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides