if you have a fully charge battery, you want to clip both negative and positive end of the discharger to the same points on the battery's connector. THen, press that large yellow button and watch until all the LED lights are gone. The discharger will stop working by that time and your battery should be at the 5.4V (6 cell) mark.
Tamiya DB01 Durga\Kyosho Lazer ZX-5\Kyosho Turbo Optima
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