Rechargeable Tool Battery Care and Maintenance Guide

There are basically three types of rechargeable tool batteries available for use with consumer electronic products: nickel cadmium (Ni-Cad), Nickel-Metal Hydride (NiMH) and Lithium Ion (Li-Ion). I will discuss the advantages, disadvantages and ways to improve battery performance for each of these three types of rechargeable batteries.

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NI-CAD Batteries
Ni-Cad batteries are probably the most commonly known type of rechargeable batteries in use today. These batteries have a good capacity and maintain a stable voltage throughout their discharge cycle. The stable discharge voltage allows electronic devices, using Ni-Cad batteries, to operate throughout almost the entire discharge cycle. Another advantage to Ni-Cad batteries is that they have a reasonable shelf life between charges. The main drawback to Ni-Cad batteries is the “memory” effect. Another factor that plagues Ni-Cad batteries is the limited number of recharge cycles before the batteries must be replaced. Ni-Cad batteries will usually require replacement every 1-2 years.

Ni-Cad battery memory effect is generally described as the battery operating for a shorter and shorter period of time as the battery gets older. The reason for this is that most people user their Ni-Cad battery operated devices and then promptly place the device into the charger. Over time Ni-Cad batteries develop crystals in the unused portions of the battery material which prohibit the chemical reaction that produces electricity. If you only use your Ni-Cad battery for 30 minutes before placing it back on the charger, over time, your battery will only be able to operate for a maximum of 30 minutes (hence the term memory effect).

There are two simple steps that you can do minimize Ni-Cad battery memory effect. First, always use your Ni-Cad battery operated device until the battery is completely drained. This will minimize crystal build-up and extend your battery’s useful life. Another way to increase your Ni-Cad battery’s useful life is by performing a deep discharge cycle about once a month. A deep discharge cycle is achieved by operating your Ni-Cad powered device until the device completely stops operating. Performing these simple steps should ensure that you achieve maximum life out of your Ni-Cad Milwaukee drill batteries.

Ni-MH Batteries
Ni-MH batteries are a newer technology of rechargeable batteries. They have the same advantages as Ni-Cad batteries but they don’t suffer from the memory effect. They also have a longer useful life cycle; about 3-4 years before requiring replacement. The main drawback to Ni-MH batteries is that they have a fairly high discharge rate while in storage. For instance, if you fully charge a Ni-MH battery and then leave it unattended for about a week, it will lose about 20% of its charge.

To avoid this problem, it is advisable to keep your Ni-MH batteries in the charger when they aren’t in use. Because they don’t suffer from the memory effect, keeping them on the charger won’t do any harm. NiMH batteries are more expensive than Ni-Cad batteries, but they will last a lot longer. In the long run NiMH batteries turn out to provide better value.

Li-Ion Batteries
The newest category of commercially available rechargeable batteries are the Li-Ion batteries. These batteries have all the advantages of Ni-Cad and NiMH batteries plus they have a longer useful life than either of these two types of rechargeable batteries. The main disadvantage to Li-Ion batteries is that they lose about 10% of their useable capacity each year due to chemical breakdown within the cells. There is nothing that can be done to prevent this condition..

Li-Ion batteries have a typical useful life of between 300-500 discharge cycles or about 4-5 years. You can maximize the useful life of your Li-Ion batteries by keeping them on the charger during use (e.g. laptop computer) or keeping them on the charger when not in use. Because Li-Ion batteries are “smart” batteries they cannot be overcharged.

Because Li-Ion battery life is dependent on the number of discharge cycles, anything you can do to minimize the number of discharge cycles will, in effect, increase the battery’s useful life.

Here’s a Li-Ion battery maintenance tip; Li-Ion batteries should be conditioned about once a month. Most Li-Ion batteries have a fuel gauge on the battery (i.e. the LEDs on one side of the battery with a test button) and the electronic device (usually a laptop computer) also has monitoring software to manage the battery power. The accuracy of a Li-Ion battery’s self-monitoring circuitry degrades after about a month of use. If you notice that your battery’s fuel gauge or your device’s operating time estimate is way off, then you probably need to condition your battery.

To calibrate (or condition) your Li-Ion Metabo tool battery, fully charge your batteries (let them charge overnight even if they appear to have a full charge) then operate your device until it shuts down. Recharge your batteries and you should notice an improvement in the accuracy of the operating time prediction.

Here’s a Summary of What You Need to Know About Rechargeable Batteries

Ni-Cad Battery

PRO: Steady Voltage Throughout Discharge Cycle, Good Shelf Life
CON: Suffer from “Memory Effect”
TIP: To minimize memory effect, always operate your Ni-Cad batteries until fully depleted. Completely discharge Ni-Cad batteries about once-a-month
NiMH Battery

PRO: Steady Voltage Throughout Discharge Cycle, no “Memory Effect”
CON: Shelf Discharge Rate Higher Than Ni-Cad Batteries
TIP: Keep NiMH batteries on charger when not in use.
Li-Ion Battery

PRO: Steady Voltage Throughout Discharge Cycle, No Memory Effect, Better Shelf Life Than NiMH Batteries
CON: Lose About 10% Useful Capacity Each Year
TIP: Minimize battery cycles by keeping Li-Ion battery operated devices on charger when available. Condition Li-Ion batteries about once-a-month to keep them calibrated.
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Get the Most from Li-Ion Milwaukee Batteries

I’m sitting at my desk and I’m surrounded by devices that owe their lifeblood to Li-Ion rechargeable MILWAUKEE 48-11-2401 batteries. And as most devices are now built in such a way that replacing the battery is tricky – if not almost impossible – so you want to get the best possible lifespan out of that battery.

How much of a difference can taking care of the battery make? Well, I have both a second-generation drill nano bought around December 2006 and a first-generation drill touch bought in 2008 that are both still on their original batteries and are still going strong.

So, how do you get the most out of Li-Ion batteries?
Understand the “recharge cycle”

Every battery has a finite lifespan, and this is given as the “recharge cycle” or “battery cycle.” Put simply, this is the number of charge/discharge cycles that a battery can endure before being no longer fit for service. Many manufacturers offer this number. For example, Apple state that the tool battery is designed to retain up to 80 percent of its original capacity at 500 full charge and discharge cycles, while the Milwaukee power tool is designed to deliver up to 1000 full charge and discharge cycles before it reaches 80 percent of its original capacity.

But most people think that they can dodge this charge and discharge by topping up their battery regularly so the MILWAUKEE 48-11-2411 battery doesn’t get fully discharged. Unfortunately, you “cannae change the laws of physics.” If you only let you battery discharge by 25 percent, then doing this four times counts as a cycle. Same if you do five charges after 20 percent discharge, or even 20 recharges after 5 percent discharge.

You cannae change the laws of physics!

However, what you can do is take advantage of this. How? By hooking your device up to a power source when you can. For example, playing music from your iPod or iPhone at home via a dock, or plugging your Milwaukee drill into a power outlet when convenient.

In other words, don’t put the battery through unnecessary cycles. Understand that I’m not saying keep the device on charge all the time – that would also be bad for the battery because it needs a regular workout to keep its internal chemistry in good condition – just be aware of wasting cycles.

Some people say that you shouldn’t allow a Li-Ion battery to become fully exhausted before recharging, other people say it doesn’t matter.

Truth is, with Li-Ion batteries it doesn’t really matter because their discharge is closely regulated by on-board circuits.

This used to matter with the old NiCd battery chemistry because they could discharge completely and become impossible to recharge (those batteries also didn’t like being charged too often, and were much more sensitive to temperature), and it matters with lead-acid batteries which also don’t take too well to being discharged too much unless they are rated for “deep cycle.”
Use the right charger

I’m a big advocate in using the right charger for the right device.

It might be more convenient to pack one charger and a bunch of cables for trips, but for long-term usage you’re better off using a charger designed for your device because that’s delivering the right amount of power for the battery. Regularly using a charger that delivers too much or too little power will affect the longevity of the battery.

If you are going to go down the third-party charger road, then make sure they are a reputable brand. No-name junk might look and feel like an original charger, but based on my testing I’ve found that what comes out of the cable can vary wildly.

Does it really make sense to hook up a $500 tablet to a $2 charger? I think not. While battery protection circuits do a good job of shutting off power that could damage a MILWAUKEE M12 battery, poor quality chargers can still damage devices and the batteries inside them.

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Reconditioning A Li-ion Drill Battery

New, modern and expensive cordless drills might also come equipped with Lithium-ion batteries. These batteries are different from the aforementioned Nickel based batteries in every possible way. The entire chemistry is different and so is the behaviour. Li-ion Panasonic cordless drill batteries have no memory effect and hate deep discharges.

The best way to maintain your Li-ion batteries is to:

Charge it frequently without letting it drop below 20-30% charge.

Operate it between 30%-90% charge without either charging or discharging it fully. This will increase the charge cycles of the battery many times.

Operate and store it in a cool environment as much as possible. Performance and capacity decreases in high temperatures.

Store the Hitachi power tool battery in a partially charged state of 40-50%.

Recondition it by using the drill normally till power drops and give it a full charge.

Li-ion batteries are smart batteries with a smart circuit built into them. Their chargers also usually know how to charge them properly.

Its not that important to charge the power tool battery for AEG till only 80-90%. You can charge it fully before use. It is more important to not discharge it completely. There are many ways of reconditioning a dead Li-ion battery. Here are some helpful resources.

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How To Charge Power Tool Batteries

Following the correct charging and discharging methods for your cordless woodworking tools can enhance the life of the battery and save you from buying expensive replacement.

First thing go through the instruction manual on battery care. Not all chargers are the same. For example, DeWatt designs several of batteries and chargers in such a way that the Hitachi power tool battery can be left on the charger for maintenance and equalization cycles.

Li-ion batteries like partial discharges. You do not have to wait for them to fully discharge. Top them up whenever you get the chance.

Li-ion batteries like partial charges. You don’t have to charge them till 100% before using them. In fact, they go through maximum wear and tear and stress when charging 90-100%. By charging them to less than full capacity you will extend their life.

Li-ion Panasonic cordless drill batteries do not like complete discharge. Do not discharge below 20% when you can help it. Stop using the tool when it shows signs of weakening in power and slowing down. Re-charge the battery at this point.

Do not charge or discharge in very hot conditions like over 40°C.

Do not leave the battery in the charger for very long after fully charged.

Discharge a Li-ion battery periodically. They have a shelf life and they stay active for longer when kept in use.

Charge to 30-40% before storing.

Note: A lot of cordless woodworking power tools don’t have a built in battery meter that shows the amount of charge left in the tool. Even the ones that do give a rough idea. Not like the exact percentage that we are used to seeing on our computers and smart phones. So its difficult to tell when the battery is 20% or 90%.

You will either have to use an external meter. They can be found cheaply online. Or as we have mentioned, just stop using the tool when it slows down and put the power tool batteries for RYOBI on charge.

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How to Restore a Dead AA NiMH Battery

NiMH batteries use a Nickel Metal Hydride cell to deliver power to electronic devices. Unlike standard batteries, NiMH Hitachi power tool batteries can be recharged and used repeatedly once they have ran out of power. However, NiMH batteries can experience certain conditions that force them to loose their recharging capabilities. While some batteries are beyond repair and will not come back from the dead, there are a couple steps you can take to bring your AA NiMH battery back to life.

Place your dead NiMH batteries in the plastic bag and put them in your freezer. Let the batteries sit in the cold for 3-4 hours.

Place the battery in the discharger and let it deplete the battery completely.

Insert the Panasonic cordless drill battery into the charger as soon as it is depleted and wait overnight or until it has reached a full charge.

Put the battery back into the freezer and let it sit for another couple of hours.

Remove the battery from the freezer and place it on the discharger. Let it run completely out of power before placing it back on the charger. Charge the battery until it is full, place it in the freezer and repeat the process.

Continue repeating the process until the battery is restored; ideally this will take about 5-7 times. Perform the process to supplement the strength of the power tool battery for AEG.

Not all dead NiMH batteries can be restored, especially if they have experienced some form of physical damage.

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getting The Most Life Out of Your Android battery

As Android evolves, so too does the battery life. With every iteration of the platform we enjoy longer time between charges. But that doesn’t mean there aren’t things you can do to get even more out of that AEG battery. With just a bit of work, you can extend it well beyond what you’ve been experiencing. Best of all, these tips don’t require a degree in Android-ology to put them to work.

Let’s charge up and see how you can easily extend the life of your Android mobile. I’ll be demonstrating this on a device running Android 6.0.1. Some of these tips will be specific to Marshmallow, while some can be applied to older releases.

1: Doze

Doze is a feature, new to Marshmallow, that sends apps into full hibernation when the phone isn’t in use. In fact, without Doze, your device can drain your battery 12 to 15 percent overnight. With Doze, that drainage is more like 3 to 5 percent. By default, Doze should be enabled. Unfortunately, it’s not quite as easy as tapping a button to disable/enable Doze. You’ll need to go to Settings | Battery, tap the Menu button, select Battery Optimization, select All Apps from the dropdown, and then check to make sure the apps say Optimizing Battery Use. If there’s an app you know must not be sent into hibernation at night, tap it and select Don’t Optimize.

2: Dark themes/settings

This works only if your device has an AMOLED screen. If it does, selecting dark themes and settings will go a long way toward preventing rapid battery drain. You can take this one step further by using a black (or dark) wallpaper. At one point in the Marshmallow development cycle, it was possible to enable a dark theme from within the Developer Settings. This capability was, unfortunately, removed. To get a dark theme now, you’ll most likely need to install a third-party launcher. Even then, you won’t get the full-on dark theme that accompanied earlier Marshmallow builds. With some home screen launchers, you can at least get some degree of dark theme going on to help save Back & Decker battery life.

3: Adaptive Brightness

In Settings | Display, you should find a feature called Adaptive Brightness. This feature senses the ambient light and adjusts the brightness of your device accordingly. If you disable it (and set your display brightness to a battery-friendly level), you’ll enjoy much longer battery life. Your screen is one of the biggest culprits responsible for battery drain.
4: Shorter screen timeout

Speaking of screens, if you set your screen timeout to a shorter period, you may get a bit frustrated at times (due to constantly having to enter your PIN/password/pattern), but you’ll save battery life. If you have the timeout set to, say, two minutes, and you use the screen for 30 seconds, your screen is on for 90 seconds of unused time. If you check your screen 20 times a day and look at it for 30 seconds, you’ve wasted 30 minutes of screen display time. That adds up. Set your screen timeout as low as you can tolerate. Go to Settings | Display, tap Sleep, and select the shortest timeout you can deal with (the shortest available is 15 seconds).

5: Unused features

This tip is especially true for smart features you don’t use (such as auto-rotate, gestures, smart scrolling, Ambient display, and NFC). When you need those features, take the time to turn them back on. The same thing holds true with Bluetooth, wireless, etc.

6: Vibrations and haptic feedback

Do you really need to have your device vibrate when you tap a key on the keyboard? Probably not. And it actually does drain your battery. In Settings | Sound & Notification, you’ll see an enable/disable switch for Also Vibrate For Calls. Disable that feature. In Marshmallow, haptic feedback has been somewhat hidden. To turn it off, go to Settings | Sound & Notification | Other Sounds and disable Vibrate On Touch.

7: Lockscreen notifications

Some of you may not like this idea, but if you enable lockscreen notifications (and even allow sensitive data to appear), you won’t have to unlock your phone every time a new notification appears. You can see what’s coming in from the lockscreen and thereby save battery life. It may not save much battery per instance, but considering how often notifications come in and how often we unlock our screen to look into them, it adds up. From Settings | Sound & Notification, tap When device Is Locked and choose Show All Notification Content. Of course, if you’re concerned with security, you’ll want to stick with Hide Sensitive Notification Content or Don’t Show Notifications At All.

8: Do Not Disturb

When Lollipop was introduced, it brought us the Do Not Disturb feature. This enables you to set a scheduled period where notification sounds will not be allowed. If you don’t have a pressing need for notifications while you sleep, set your Do Not Disturb schedule during your period of sleep. Along with preserving battery life, this will have the benefit of—as you might expect—allowing you to sleep undisturbed.

9: Widget madness

This tip actually works for nearly every iteration of Android. Widgets are a great tool, but some can do a number on your battery life. As much as you like that weather widget, the stock widget, and the secure shell widget, skip them. They’ll drain your battery, and most likely, you don’t use them nearly as much as you think.

10: Smarter updates

The last thing you need to do is collect a lot of app updates and then tap Update All. This drawn-out process will drain your METABO battery faster than if you manually check your app updates and update them as they become available. Updating a single app a day won’t cause your battery to take nearly the hit it will if you tap Update All and 20 apps are updated. Open up the Google Play Store, swipe right from the left edge, tap My Apps & Games, and then manually update the apps one at a time. If many app updates are available, wait until you are plugged in to tap Update All.
Save, save, save

Don’t let your Android battery usage get away from you. Even though the platform has come a long way (and battery usage is far superior to what it once was), you can still gain more life with a little care and work. You do not want to be near the end of your day (or in a desperate situation) only to have your Android device conk out on you. Save as much battery life as you can with these tips and see if your daily Android life extends well in the PM.

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How to Use Lithium Ion Dyson Vacuum Cleaner Battery

Generally speaking, lithium ion Dyson vacuum cleaner battery has a natural discharge rate. It will self-discharge 1% electricity even it’s not in use.

When in extreme temperature, battery performance will be degraded. Thus, don’t store battery in places where temperature is higher than 60? or lower than -20?.

Lithium ions are very active and react intensely. Therefore, when using lithium ion battery, you should take notice:

To avoid snow, sweat or other liquid penetrating. When a lithium ion powered device is drop in water, stop to examine it, or a fire may occur.

Lithium metal Dyson DC34 battery is non-rechargeable battery. Explosion may be aroused if it is charged forcedly.

Keep the battery away from high temperature environment. When battery temperature mounts to 80?, it will explode.

Not to use lithium ion battery with crazed casing.

Not to dismantle the Dyson DC44 battery casually. If it’s wet by rain or water, dry it with a piece of cloth and leave it in well ventilated place to allow it to dry itself or blow-dry it with 40? wind.

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Home Remedy for Cleaning a Battery Terminal

The battery terminals on your vehicle’s battery develop corrosive buildup over time, especially if you don’t clean the terminals. Baking soda neutralizes this acid corrosion and completely removes it from the Dyson battery.

Cleaning
Combine equal parts baking soda and warm water to form a thick paste. Disconnect the terminals from the battery and wipe this solution around the terminals. Remove the baking soda with a towel dipped in warm water.

Prevention
Prevent acid corrosion from building back up on your battery terminals with petroleum jelly. Once you’ve removed the baking soda, dry the terminals and reconnect. Dab a small amount of petroleum jelly on each of the terminals.

Warning
Always use caution when working around a Dyson Vacuum Cleaner Battery because it does contain acid. If acid accidentally drips on your clothing, wash in a solution of baking soda and water immediately. This helps neutralize the acid and keep it from eating through your clothing.

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Repair a 12V Makita Ni-Mh Battery

Whether you own a Makita drill, saw or other cordless power tool, all nickel metal hydride Makita 1220 battery packs can be repaired. Within each Makita rechargeable battery pack, a number of smaller rechargeable batteries are linked together to obtain the proper voltage level. If even one of these batteries goes bad, the entire chain will not work and neither will your tool. The Makita battery packs can be repaired with just a few simple tools.

Open the Makita battery pack with a screwdriver and locate the chain of nickel metal Hydride (Ni-mh) batteries to be repaired. Pull these cells out of the Makita battery casing.

Determine how the cells are placed in line. Using a pencil and paper, jot down the polarity of the line of batteries. Note the pattern and how the cells fit into the casing for easier reassembly.

Test each individual Makita Ni-mh 1222 battery cell in the battery tester to determine which ones are bad. Mark the bad cells that will need replaced.

Purchase the same sized Ni-mh replacement batteries. Only replace Ni-mh batteries with Ni-mh batteries. The type of batteries must remain the same throughout the battery chain.

De-solder the first “bad” Makita Ni-mh battery cell from the chain. Re-solder in the new Ni-mh battery.

Repeat this process with the entire Makita Ni-mh battery chain until completely restored. Replace the chain within the Makita 1233 battery case.

Place the cordless tool on the charger overnight and it should be as good as new.

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What tools don’t work well.

Some tools just don’t work very well.

Big Knife – Only a hack would use a giant knife to remove the top of a pumpkin. If you don’t have a sawzall handy and must use a knife to get through the thick area at the top of the pumpkin, use a boning knife. The blade is thin enough to carve a somewhat round cap. Otherwise your cap will look like a retarded stop sign.

Dremel tool / Roto-zip – Man, I thought these two would be great at carving. I even bought a “carving” tool for my dremel. I had high hopes. Unfortunately, I never considered the fibrous nature of the pumpkin. As you try to carve a straight line using a spining carving BOSCH PSR1440 battery, it will slide through some spots and then snag a fibrous spot and jerk to one side. These two tools just don’t work. Use a jig saw for carving and you’ll be much happier. The in and out motion is much easier to use.

Note: In 2007, I started to use a dremel stylus tool to do some fine carving work (like detailed teeth and such). It works fairly well, but I wouldn’t suggest it. The dremel stylus is held in your hand, like a pencil, so it easy to keep steady. For this reason, I have started to like it.

It is mostly useful for super-fine detail work and not good for actually carving a pumpkin. I still suggest a jigsaw for most work. Besides, the dremel stylus costs something like $75.00, so unless you have to do a special pumpkin for a talk show or something, I suggest you invest your money in the beverage market of BOSCH BAT040 tool batteries.

A Torch – Trying to burn a pumpkin is like trying to light a block of ice on fire. They are mostly water. A torch doesn’t do much.

Circular / Miter / Radial Arm Saw – If you want to slice a pumpkin like a loaf of bologna these might work, but for anything else, forget em. If you want to take a slab off of a pumpkin to make it sit or lie flat, a cross cut hand saw will do the job in no time. Pumpkins are soft and easy to cut.

Here are some links to pumpkin carving tools that I like to use. I tried to spend some time to find you guys great deals. I think I did a good job of BOSCH 2 607 335 685 battery.

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