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DW 911 radio works on mains power but not with battery inserted

Fitted new charger unit and battery plug in holder

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Change the battery connector pcb board part# 5140019-41 12.07 on

Posted on Dec 29, 2014

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If the battery is charging as intended with the standard DeWalt charger and the indicator led's on the charger indicate that the battery is charging and also you need to check that the same battery will run your other DeWalt tools like a drill with no issues then the next obvious issue would be with the internals of your DeWalt radio.
If you're up to disassyembling it and doing some more testing with a multimeter you can contact me.

Posted on Dec 11, 2014

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Using a test meter check that the battery's voltage is at the radio's designated voltage. If not, then the battery is dead recharge it. If it is within the required voltage, then ensure that the polarity terminals of the battery are in good contact with the radios positive and negative points. If still not good, replace the battery.

Posted on Dec 11, 2014

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Posted on Jan 02, 2017

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SOURCE: dead battery for one unit won't charge at all. voltage -0- both radios and charger work fine. where can I get battery? P/N MN-160001 capacity 950mAh

First put the dead laptop battery in a zip lock.
Then put the zip into refrigeratory and keep it in freezer for 14 - 15 hours.
Afer waitinf for a long time, take the dead laptop battery out of refrigeratory .
Using clean and soft cloth to dry the battery and get the battery to room temperature (about 20° - 25°)
In the end fully charging and discharging the battery for 3 - 4 cycles.
Now you would see that your dead battery holding up charge for 1-2 hours.
See the detail video in

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Posted on Dec 18, 2008

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SOURCE: no charge

Here are a few troubleshooting thoughts:
1) Check your charger contacts for film/debris. Use a pencil eraser to clean them. (This can be done on the charger and the battery.) If the charge light comes on and stays on consistently you know you have good contact.
2) Be certain your radio is shut off when on the charger.
3) New batteries sometimes need initialized. It will sometimes take 3 or more chargings to fully charge the battery. Check the date code of the new batteries to be certain what you obtained is truely new/fresh. Contact the vendor where you purchased the batteries and let them know of your difficulties in charging the new batteries.

Posted on Mar 13, 2009

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There are generally 2 causes for this symptom.

1. The input connector is usually a 3 terminal device. When the plug is inserted into the device, a spring loaded contact is pushed away from another terminal which effectively disconnects the battery section from the device. This stops any electricity from the plug from being connected to your batteries and causing overload conditions. If this spring loaded terminal has been damaged, when the plug is removed from the device it will not "spring" itself back to its terminal and the battery power will not reach the PC board.

2. The battery case (compartment) has 2 wires going from it (internal to the device) one black and one red. If either of these wires has broken off the battery holder or broken off the PC board within the device, it will not power up.

You can also make sure that all the batteries are inserted in the correct direction. Since the unit works when plugged in, you can cross out anything else having to do with the unit.

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Low battery icon on Midland LXT350 walkie-talkies

Your LXT350 is equipped for using an optional rechargeable NiMH battery pack which can be recharged by inserting the AC adapter into the radio charge jack, or with the optional desktop charger.

I would make sure the radio is off, then insert the charger. Charge only for the prescribed time (no more/no less) and remove from the charger.

Charge time is initially 24 hours. Charge time is about 12 hours thereafter. For maximum battery life, it is recommend charging the battery pack when the low battery icon comes on. Remove the radios from the charger when the charge time expires.

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