Makita bl1830 charges but stays on static red light
Relatively new batteries charged a handfull of times. Charger flashing green when empty, Insert battery staic red but normally changes to staic red with green when charged, but staying just static red. Seems to me that Makita tools are great until they need a PCB and then the cheap and nasty stuff comes to the surface just like my Mak DAB packed up after 18 mths, Could it be fixed or replaced? No chance
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The pcb inside the battery has a microcontroller that monitor the
charges and charge cycle. When the cell falls below a certain voltage,
it will instruct the charger not to charge and will show with a
red-green flashing light. If the battery has been tried 3 times in
succession then the pcb will brick itself from the makita charger. So
first replace the bad cells. There are 2 solutions at this moment:
charge with a 3rd party lithium charger like the imax b6 or replace the
pcb with a working one. check out my blog on
http://mkbl1830.blogspot.com/
If both lights are blinking on the charger after putting the battery on to charge, the battery is no longer chargeable. Most likely it's bad cells inside the battery, the charger is reading the battery as bad and will not charge it. The only fix is to buy a new battery.
If you put a battery on your charger and both red and green lights flash it is indicating that battery is defective. There may be a short in the battery or they just may be too old and worn out to charge anymore. If the charger is reading the battery as defective it will not charge the battery. The only fix is to buy new batteries.
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.
If the charge count on the batteries is under 300, Makita will replace them. Makita has a known defect in this battery that causes the battery to shut down before it is dead. So as of now they are exchanging ones with low use.
If they are truly defective and makita won't replace, you have to open them, find the dead cell or blown fuse, and replace. Search youtube makita battery for a video on repairing this battery. But once the red and green lights on the charger flash, the the battery can't be charged on a Makita charger -- it's been locked. So use a third party charger.
You have defective batteries. Either they are old and used and can no longer take a charge and should be replaced, or they have a problem not allowing them to be charged.
If batteries are new, seek replacements. If old, time to buy new batteries.
If this happens with several batteries, and even new ones, your charger my be faulty.
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