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

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Old mikita 18v batteries won,t fit new makita tools, why?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: Makita LXT 18V will not charge

looks to me like a defective batterie

Posted on Aug 21, 2008

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Editor925
  • 285 Answers

SOURCE: my makita 18v 2.0 battery

How old is the battery?
They have a service life and require replacing after they no longer hold a charge. This could be 2 years or 8 years depending on how often it is used and how regularly it is charged etc.

If it is a new battery, then take it back as it could be defective.

Possibly could also be the charger but you could verify that by charging a different battery and seeing if it charges that second battery ok, or not.

Posted on Mar 03, 2009

  • 2 Answers

SOURCE: problem charging makita batteries 18v

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 8 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. Buy Makita should definitely have a few words with their supplier before they become a liability!

Posted on May 25, 2009

  • 4 Answers

SOURCE: makita cordless driver drill model-6347d.

You say will not stay charged? Over what time period? Are you aware Nicad and NiMh rechargeables discharge naturally at 1% per day so where does that leave your power tool after 3 months? Furthermore they only have around 1000 charges in their useful life so you can immediately see how these tools are not for intermittent(ie handyman) use.

Posted on Jul 03, 2009

  • 9 Answers

SOURCE: 18v Lithuim Ion battery will not charge

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 + (tip end) 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 GiantGlobes.com

Posted on Aug 18, 2009

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1 Answer

How come my lithium 18v battery (194205-3) wont fit on my new Makita 6 1/2 circular saw?


I sell & repair the Makita line of tools and the BL1830 (194205-3) battery is designed to fit on Makita's entire line of 18-volt tools. You didn't give the model number of your saw so my best suggestion is to make sure the saw is an 18-volt tool then make sure the tool's and battery's mating surfaces are OK. Try the battery in other tools & try other batteries on the saw. If this doesn't help please respond with the saw's model number or what you found out doing what I've suggested.

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Some of the Makita 18v LXT tools require the BL1830 3.0AH battery and are designed that the 1.5AH battery will not fit.

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Makita battery won,t charge


Return it to the place of purchase if under a year or send it to Makita UK in Milton Keynes

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I have a makita 6391D cordless drill with 18v ni-cd 1.3ah batteries, just had one battery and charger stolen so have to buy replacements is there any way i can convert it now to lithium batteries if


I can't find a Makita model 6391D drill but they do have a model 6390D drill that takes the 18V Ni-Cd pod battery. The tools and radio don't care what type of battery you use, only that they are 18V. However, to date, Makita does not make a Li-Ion, pod battery. All of their Li-Ion batteries are the slide-on type. Your options for that 18V tool is the 2.6ah Ni-MH battery (PN 193159-1 for a single or 194158-6 for a twin pack), the 2.0ah (PN 192827-3) and 1.3ah (PN 194107-3) Ni-Cd batteries.

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1 Answer

Dewalt lithium battery won't charge


Your problem states you have a Makita tool and your question is about a Dewalt lithium battery. In either case if the battery won't take a charge or if the charger is showing the battery is defective the only fix is to replace the battery. Some causes for defective batteries or batteries that won't take a charge are bad cells in the battery, bad or shorted IC board in hte battery, broken or burnt connections between the many cells or between the cells and IC board or even bad or old cells that will no longer charge up. The time and effort needed to find out what the problem is then finding another battery to scavenge parts from (individual battery parts are not available) is never worth the cost of just buying another battery and going back to work with the tool(s).

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2 Answers

One question please, I have makita cordlless


according to the schematic I saw yes you can and I think that you will be pleased with its performance, their operator manual even lists the weight of tool with this battery. Makita has a 1 year limited warranty on the Li-Ion battery that you might want to consider if you have the receipt.

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1 Answer

My 18 volt makita battery wont charge and it is less than a year old. Do you know y? Can i fix it?


Those batterys need to be on the charger if they are not in the tool. I would try to get the store to exchange the entire set for a new one. If that fails ebay sells batterys pretty cheap.

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How do i re-assemble a makita 18v cordless drill


check out ereplacementparts.com and type in your model eg bhp451 they should have an exploded diagram.

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1 Answer

My makita 18v 2.0 battery won't keep a charge


How old is the battery?
They have a service life and require replacing after they no longer hold a charge. This could be 2 years or 8 years depending on how often it is used and how regularly it is charged etc.

If it is a new battery, then take it back as it could be defective.

Possibly could also be the charger but you could verify that by charging a different battery and seeing if it charges that second battery ok, or not.

Jul 04, 2008 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

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