Question about Makita Tools 18V 1/2" Lxt Lithium - Ion Hammer Driver - Drill Kit - BHP451

1 Answer

Battery charger just flashes to say the battery has to cool down but will not start charging.tried another charger same thing happens but does not show that the batteries are faulty!

Posted by on

  • anglia64 Apr 04, 2009

    Makita Tools 18V 1/2" Lxt Lithium - Ion Hammer Driver - Drill Kit - BHP451. Every thing was working fine and then boyh batteries would not charge, 2 flashing lights on charger. Help is it the charger or batteries. the drill is little used and 15 months old.Help to neilweatherald@hotmail.com please



  • olsenfix May 22, 2009

    I have the same proble with one of my two barreties. Have only charged it a few times.

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Governor:

    An expert whose answer got voted for 20 times.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 2 Answers

Unfortunately, Makita’s li-ion battery packs have a design flaw. After having the same problem with my two batteries, I took it apart and saw the problem immediately. You see each battery pack has ten li-ion battery cells and a circuit board with a memory chip witch holds the charging history of the battery pack. But that memory chip constantly draws power from 2 of the 10 batteries. The current it draws is very small but if you consider it over 6 month or more, the power drain becomes very significant. You end up with a battery pack with 8 still fully charged battery cells and 2 drained battery cells. When you put this battery pack in the charger, it detects weak battery cells, assumes they are defective and refuses to charge. To avoid this problem you should charge your battery pack often, even if you haven't used it, every two months should be ok.
I suspect that Makita doesn’t make these battery packs, they make power tools, good ones too. But Makita should definitely have a few words with their supplier before they become a liability!

Posted on May 27, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

When its charging it flashes green & red and won't take a charge


If it is a Makita battery charger it means the battery has died or has an internal fault, or is too hot.
Take it out of the charger, let the battery cool down if required and try again.
If both red and green lights are flashing, try a different battery.
It might be time for a replacement battery.

Mar 21, 2015 | Drills

Tip

Cordless power tools


To maximize your battery life let them cool down 15 minutes before you put them on the charger.Also let them cool down after charging before use for 15 minutes.Store your batteries with a full charge and condition them every month by using them a little bit and return them to the charger for a full charge.

on Oct 20, 2010 | Drills

1 Answer

I've got a Bosch ps30 drill that uses bat411


Directions say green light indicates that the battery is fast charging only,it does not indicate at exact point of full charge. I let my batteries charge for 12 hours for the first time charging,found out myself the same way. Try that and you will notice the difference.

Jul 15, 2011 | Bosch PS30-2A 12-Volt Max 3/8-Inch Drill...

1 Answer

When i start charging battery yellow light lit and red light is flashing. Is that ok?


generally the yellow light indicates a battery problem, but I have also ween a good battery and the charger was damaged giving a false reading on the circuit. Try another battery and see what happens before replacing

Jun 02, 2011 | Ryobi Multi-Volt Battery Charger

1 Answer

My charger is flashing red when i place the battery in it


Ridgid charger lights read as follows: Solid red; charger has power. Flashing red; charger is evaluating the battery, checking if it's cool enough to charge and if it is in chargeable condition. If the battery is hot, i.e. just came off the tool after extended use, it won't charge the battery until it cools down. Flashing red & green; the battery is defective and the charger will not charge it. Solid red & flashing green; battery is charging. Solid green; battery is full.

Dec 07, 2010 | Ridgid Drills

1 Answer

Brand mew makita set batries are flashing as if they were broken


Hi, How are they when you put them in the drill? Are they dead to the point of needing a charge or do they have plenty of power? If they have power in the batteries, and you go to recharge them and the charger is indicating the batteries are faulty, I would say that it is the charger that has the fault not the new batteries. Try and charge them anyway and see if they take a charge. If not, take the new batteries back to where you bought them and tell them they will not take a charge and they are new. Have them pull out a charger and see what happens. If they start to charge, you will know the problem is you're charger. Good Luck.
Shastalaker7

Jan 31, 2010 | Drills

3 Answers

When put on charge the green and red light flash


Yep, not the batteries, mine is doing the same thing but my second charger works fine with the same batteries

Jan 19, 2010 | Makita 2 Bl1830 18v Battery,dc18ra Charger...

2 Answers

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.

Jul 11, 2009 | Makita 12 Volt Cordless Drill/Driver Kit

1 Answer

Black/Decker 12 v drill charger will not charge battery. help


If the battery gets warm after being in the charger a while and still is not charged, then the battery is bad
if the battery stays cool in the charger then the charger may be bad
Chargers usually have a light code, I.E. on means charged, slow flashing means charging, and a quick blinking means bad battery
Some chargers have 3 lights and the code should be imprinted on the charger.
hope this was helpful, cb

Apr 15, 2009 | Black & Decker Drills

2 Answers

Ryobi battery charger


Either the battery is hot from use or has been in the sun, let it cool down, then try again.

Nov 16, 2008 | Ryobi Multi-Volt Battery Charger

Not finding what you are looking for?
Makita Tools 18V 1/2" Lxt Lithium - Ion Hammer Driver - Drill Kit - BHP451 Logo

1,200 people viewed this question

Ask a Question

Usually answered in minutes!

Top Makita Drills Experts

John Trevino

Level 3 Expert

1378 Answers

EugenesDIYDen
EugenesDIYDen

Level 3 Expert

479 Answers

Mike

Level 3 Expert

4332 Answers

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

Answer questions

Manuals & User Guides

Loading...