It connects the battery temperature sensor to the charger circuit to prevent the battery from overheating while being charged.
SOURCE: My Dewalt 14.4 volt nicad
Probably, the battery has seen better days. After full charge, the battery should read more than 14.4 volts until used for a little while. You should either replace the battery or have it rebuilt with either Ni-cads or much-better lithium ion cells. Check with www.primecell.com for information. I had this done for a Skill drill battery (Li-ion) and the charge holds for long periods of time when stored and lasts far longer when used. The original charger worked ok for this modification. Hope this helps!
SOURCE: My DeWalt DW9116, battery charger lead light is fl...
Brown
Brown
Silver
Gold
R21 = 0.11 Ohm at 5 percent
Now can someone help me find the schematic for this model? DW9116
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On 3/5/12
SOURCE: Charger not charging,charging led not lite.
Ohm out between the primary and secondaries on the main transformer... there should be Mega Ohm (high resistance) between the primary and secondary winding's of the main power transformer. If you have a short (low resistance= K Ohm or lower) then the transformer is hosed and needs to be desoldered from the board and replaced. I believe there is a fusable link resistor on the board as well...could be fryedThere is a resistor/resistors on the secondary output those can also be burnt out...hard to test on the board though. Look for any visual evidence of discoloration of any board components. There is where the fault will be usually.
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