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Old 12-07-2013, 06:47 PM
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Default How to charge a Makita battery that wont charge on the charger due.

How to charge a Makita battery that wont charge on the charger due to a faulty internal chip.
The charger locks out the battery after 3 tries so you are in effect left with a dead and useless battery.

The washers get warm when transferring the load from the charged battery, but only 20c above ambient.

The battery in question is only about 1 year old and has done very little work.
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Old 12-07-2013, 06:51 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

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Originally Posted by brickie in oz View Post
How to charge a Makita battery that wont charge on the charger due to a faulty internal chip.
The charger locks out the battery after 3 tries so you are in effect left with a dead and useless battery.

The washers get warm when transferring the load from the charged battery, but only 20c above ambient.

The battery in question is only about 1 year old and has done very little work.
You will probably damage the battery this way. Lithium batteries require a different charging regime and the charging rate is quite important. Giving it full amps straight up is likely to wreck the battery. Your battery in question probably won't do very much more work. Won't you just end up with two flat useless batteries this way?

Last edited by david s; 12-07-2013 at 07:17 PM.
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Old 12-07-2013, 07:51 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

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Originally Posted by brickie in oz View Post
How to charge a Makita battery that wont charge on the charger due to a faulty internal chip.
The charger locks out the battery after 3 tries so you are in effect left with a dead and useless battery.

The washers get warm when transferring the load from the charged battery, but only 20c above ambient.

The battery in question is only about 1 year old and has done very little work.
Cool idea, I will have to try it on my dead one.
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Old 12-07-2013, 07:55 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

Ive just been out in the shed and run the multimeter over the charger, it wont send out voltage unless the chip in the battery is ok.
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Old 12-07-2013, 09:07 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

I guess if you can't charge the battery via the charger then it's useless anyway. A different charger hooked up via leads could be another option.
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Old 12-07-2013, 09:19 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

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I guess if you can't charge the battery via the charger then it's useless anyway. A different charger hooked up via leads could be another option.
Refer to my original post. and you teach for a living.......?
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Last edited by brickie in oz; 12-07-2013 at 09:51 PM.
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Old 12-07-2013, 11:42 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

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you teach for a living.......?
only part time teaching, so only part time comprehension.

Last edited by david s; 12-07-2013 at 11:45 PM.
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Old 12-08-2013, 03:25 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

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Originally Posted by brickie in oz View Post
Ive just been out in the shed and run the multimeter over the charger, it wont send out voltage unless the chip in the battery is ok.
Gudday
The battery itself doesn't have a chip that I'm aware off rather the charger has. If the battery has no charge at all the charger will not work and the light stays red. Jump a small charge from a live battery like you have done and the charger will the recognize the battery and charge it.
Not sure how that battery will go though they diffinitly don't like being fully discharged for any length of time. The other thing that stuffs them is to chuck them in a charger when there still warm to the touch cause you have been using the drill hard.
I'm waiting for the day that you get 3 batteries and a fast charger with every drill!
Regards dave
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Last edited by cobblerdave; 12-08-2013 at 03:26 PM. Reason: Spelling
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Old 12-08-2013, 10:35 PM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

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The battery itself doesn't have a chip that I'm aware off rather the charger has. Jump a small charge from a live battery like you have done and the charger will the recognize the battery and charge it.
Not so, the charger recognizes the batteries, Ive done the jump off the other battery and both chargers refuse to charge the so called dud battery.
Also, there is a chip inside the battery.

There is a class action in the process against Makita for implementing such redundancy in the batteries.

If you had the internet Dave you could have researched it before posting.....

Quote:
Originally Posted by cobblerdave View Post
The other thing that stuffs them is to chuck them in a charger when there still warm to the touch cause you have been using the drill hard.
Thats why the modern chargers like the Makita have fans, they cool the battery before charging them.
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Last edited by brickie in oz; 12-09-2013 at 12:25 AM.
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Old 12-09-2013, 02:31 AM
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Default Re: How to charge a Makita battery that wont charge on the charger due.

Gudday
Well sounds like a dud ...... If you considering one of those repack kits you hear about let us know how you go.
Regards dave
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