Makita Battery Checker

Batteries, Chargers, and Battery Management Systems.
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marty   10 MW

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Makita Battery Checker

Post by marty » Sep 30 2010 8:04pm

Marty got a new toy.
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Makita Battery Checker
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Makita Battery Checker checks number of cycles in Makita power tool batteries. I got another pile of defective 18V, 1.5Ah and 3.0Ah Makita Lithium-Ion batteries. Will write number of cycles on each battery pack with one of those white paint pens. Got to go look for my paint pen.

Makita Battery Checker works with a computer. Results look like this.
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26 cycles
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MARTY
Volt Electric Vehicles
http://www.voltev.com

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marty   10 MW

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Re: Makita Battery Checker

Post by marty » Oct 01 2010 7:39pm

Marty got another toy.
Cheap Multimeter from Radio Shack. Really have had this for years. Mine is yellow.
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Will measure voltage across battery terminals and write number of cycles and voltage on each battery pack. Got to go look for my paint pen. Are there any other tests to do before I open battery cases or sell them all.

There is no way that I know of to charge these defective Makita battery packs. Charger just flashes a Green/Red bad battery code.

Look what Doctorbass do. How to dissassemble a Makita Li-ion battery
MARTY
Volt Electric Vehicles
http://www.voltev.com

anttipaa   10 W

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Re: Makita Battery Checker

Post by anttipaa » Nov 20 2014 5:35am

Hello!

Did you connect your makita battery checker to PC with USB or with serial port? I cant get my checker working using USB.. :( Any ideas? I have software version 1.6.

Best regards,
Antti Soininen
Finland
Canyon Torque DHX + Cyc X1 Pro

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marty   10 MW

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Re: Makita Battery Checker

Post by marty » Nov 20 2014 8:19am

Serial port, Windows XP
MARTY
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circuit   100 kW

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Re: Makita Battery Checker

Post by circuit » Nov 20 2014 11:20am

How can it check cycle count? My makita batteries have no electronics inside, just plain 7-way connector for tapping in to each cell.
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marty   10 MW

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Re: Makita Battery Checker

Post by marty » Nov 20 2014 6:24pm

circuit wrote:How can it check cycle count? My makita batteries have no electronics inside, just plain 7-way connector for tapping in to each cell.
?
makita_Li-ion_18V_3.0Ah_red_side.jpg
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makita_Li-ion_18V_3.0Ah_board_top.jpg (93.94 KiB) Viewed 1790 times
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makita_Li-ion_18V_3.0Ah_board_bottom.jpg (113.26 KiB) Viewed 1790 times
MARTY
Volt Electric Vehicles
http://www.voltev.com

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circuit   100 kW

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Re: Makita Battery Checker

Post by circuit » Nov 21 2014 2:12am

Oh, looks like I was mistaken about this. Sorry.
Is that chip labeled A2 - mosfet? Or does it simply signal the drill to cut power?
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