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Old 09-14-2004, 03:39 AM   #1
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Default Stoopid charger question

Can I use my Makita cordless drill charger to charge my tamiya battery?

The charger output is 7.2v 1.5A. The batteries are prolly the same anyways.

BTW, this is only temp until I get into racing and buy a propper good charger, lol.
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Old 09-14-2004, 03:41 AM   #2
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Default charger

You might get away with it, just don't watch out for the temp of the packs.
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Old 09-14-2004, 03:49 AM   #3
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Looking at the battery, says its 7.2v NiCad. And i've been told they are just sub C cells.
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Old 09-14-2004, 04:34 AM   #4
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Do this charger have some kind of auto cut off? If so, do the charger or manual state something like delta volt cut off or anything else about the termination process? Or is this charger simply a power supply, which you manually have to disable after a proper amount of time?
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Old 09-14-2004, 05:04 AM   #5
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These type of chargers use temp to determine when to shut off.
They use either a temp sensitive switch or a temp sensitive resistor. The third contact on the battery pack is connected to the temp sensor device. If you have an old useless pack for your Makita, you can open it up and retrieve the temp sensor stuff and perhaps use that to make some sort of temp sensor that you connect to your pack that you want to charge. Not the fastest charger, but it will most likely work.

Just an idea.

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Old 09-14-2004, 05:45 AM   #6
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I think I remember reading something on the charger (it's back in the shed, and I cant be bothered going out there again, lol) about cutting off after an hour? Even if it does, i'll still only charge it for an hour.

Just another question... what would be the highest safe charging current? This old makita charger aint quite standard (cause it's been fixed). I'll have to measure the current when I go to charge.
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Old 09-14-2004, 06:28 AM   #7
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What mA rating are these batts?

Consider this: there's no doubt that getting a decent charger will both give you better performance AND longer battery life.
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Old 09-14-2004, 06:31 AM   #8
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Not sure about the battery (havn't got it yet).

A real charger will be bought, this is only temp until I can afford one!
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Old 09-14-2004, 06:39 AM   #9
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Well, it might not take long to damage a pack. Just forget to disconnect the charger once, and the pack can be ruined. If you have a programmable clock, which can shut off the AC supply, it can prevent the worst.

But be carefull, or it might be more expensive in the long run in terms of ruined packs.

Dont know your budget, but have you considered buying a second hand charger?
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Old 09-14-2004, 07:44 AM   #10
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I use my T35 to charge my cordless drill packs.....

Yes, they are Sub-C.
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Old 09-14-2004, 03:56 PM   #11
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I only use my GFX to charge my Black & Decker Drill battery. The supplied chager takes 10+ hours, GFX 20 minutes
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Old 09-14-2004, 04:27 PM   #12
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CT, I will only ever be charging one pack with this. When I can afford, I will buy a decent charger and some good packs.
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