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Rust can definitely become a problem. Rust and build up on battery terminals can block the current of power from getting to and from the battery. Another words, the rechargeable battery may not be aloud to maintain a charge and if it does have a charge, the Metabo cordless drill battery may not be able to get power out , causing the emergency light not to operate when back-up power is needed. Cleaning Rusty Battery Terminals To remedy the problem, first remove the cables or wiring from your battery noting the following: You will want to disconnect the negative terminal first, then the positive terminal.
You may need to use a pair of pliers to loosen and remove the cables/ wiring.
Be sure not to short your battery out by touching a metal tool to the battery and another metal object.
If you find that the cables are damaged or have excessive corrosion, make sure and replace them.
If the Black & Decker power tool battery terminals have damage, you will need to replace your battery. You can now poor a little baking soda on each terminal/ post and the wiring connectors/clamps and scrub them with a wet toothbrush. If the toothbrush isn't doing the trick, you can use a wire brush.; When you have finished cleaning the terminals, wipe and dry the terminals with a lint free cloth. After that, hook the positive wire back to the positive terminal/ post, then the negative wire back to the negative terminal/ post (reverse of what you did earlier). Preventing Future Rust on Battery Terminals Once your wiring is hooked back up to your replacement drill battery, you can apply White Lithium Grease to all the bare metal parts at the connection points. This will not only take care of your current problem, but prevent future build up or rust. The White Lithium Grease will not cause issues with your electrical connection and can be found in your local automotive store. The grease will prevent corrosion by forming a layer between the conducting surfaces, eliminating contact by moisture and air.
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battery faq, battery terminals, tool battery,
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