The new battery will not insert all the way. When placed side by side with the old battery pack there does not appear to be a difference. Something is longer by 3/32inch but i don't know what. anyone solved this problem?
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These de0245 chargers are designed to detect certain problems that can arise with battery packs which would be indicated by the red light flashing at a fast rate.
If this occurs, re-insert battery pack. If problem persists, try a different battery pack to determine if the charger is OK. If the new battery charges correctly, then the original pack is defective and should be returned to a service centre for recycling.
If the new battery pack gives the same trouble indication as the original, have the charger tested at an Authorised Service Centre.
Try placing the battery in a freezer for six hours before trying to charge the battery and if this doesn't work find a friend with a working charger and make sure using that method that you don't just have a bad charger.
Easiest and safest:
take the tool and batteries to nearest shop where they sell Dewalt. Ask the guy to let you use their batteries in your tool and vice versa, your batteries in their tool.
DYI procedure:To check batteries:
- if you have some multimeter, try to measure voltage and if possible also amps (but only for a fraction of the second, if battery is good, amperes shoudl jump up very quickly)
- if you have no multimeter, try to find 12V bulb (check spare bulbs for your car), use wire to connect and it should light up.
To check tool:
open it up, take some 12V DC source, put wires on contacts inside the handle where battery connects. Pull the trigger and it should work. you can try to put wires directly to contacts on the motor. Follow cables from the switch to motor.
completely drain all the batteries by taping the on switch and, letting the drill run until it stops.
then recharge again do this three times for each battery ( these batteries have a "memory" and, only recharge to the level of last topoff if this does not work the chemicals in the battery are depleted and, must be replaced they can be purchased from Dewalt.com
It needs a new battery pack. Rechargeable batteries eventually wear out and no longer hold a charge. The tool runs only briefly and the battery is exhausted again. The big home centers and online sources sell replacements. There are also companies that say they can rebuild your battery pack at much lower cost than replacement. I have no experience with them.
How old is the battery? They do die if old and well used! You can try checking the fuse inside the charging unit . If this does not work or fuse is OK you can get the battery revived (there are places that do this) if it is not completely stuffed or just get a new battery which are quite cheep on ebay