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When using the lithium bateries in the new 1/2 drive impact under any stress the drill loses all power and the battery status goes from green to red. remove the battery and put it back in and its back to normal only to do the same thing all over again.
Re: When using the lithium bateries in the new 1/2 drive...
The batter cells are weak and wont hold a full charge, replace with a new battery, also check that there is nothing in the way of the contacts such as foreign debris inside the battery cavity of the impact.
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Lithium batteries have a limited lifespan, typically 3 or 4 years, and their capacity between charges decreases over the years. To extend the lifetime of a battery it should be run completely flat after every few charges rather than topping it up. New batteries need to be charged several times and run flat under normal use before they gain their full capacity.
If the battery didn't take care of the problem check the brushes next. Take the two screws out of the back cover and check both brushes (Part Number 194427-5). They should be at least 1/4" long and evenly worn, if not replace them. If they're excessively burnt or chipped and broken, check the armature before replacing them. If the commutator is damaged it will only shorten the life of the new brushes.
If both lights are flashing it means the battery is defective so it won't charge it. By defective it could mean the battery is just worn out or there may be a short in the battery. If the battery is under warranty you can get it replaced at a Makita Service Center, if not you have to buy a new battery.
You can try this it might take a while but it should work , use the drill untill it actually stops, use it really hard , then recharge for the full time then use the drill again untill it stops [drain the battery ] even get the kids to hold the trigger untill it stops then recharge again eventually you will remove the memory block off the battery , works for me everytime smirf617
I have the same problem. The guys at Batterries Plus told me that 7.2 volt battereis are not easily replaced and definately not through them. If you left it charging for to long (ie over a week when you were gone like me) then the battery is never gonna charge again. You might as well find the same model of dril at skil's reconditioned site for around $40 or buy a brand new one for $60 or $70
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