Dead Power Tool battery charger repaired

A construction worker brought it to my shop. It was a dead battery charger that does not charge the Hitachi power tool batteries for the power drill that he uses for his work. He said that he took it to someone else to get it fixed but the technician only changed the power cord but that did not bring it to life.

Once I opened the cover and scanned the board with my naked eyes, I spotted a resistor that had a black dot on it. It was red black gold and gold. That means it was only 2 ohm resistor and also a fuse. When I measured it with my meter, it was open.

I replaced that with the same exact value and powered the machine. That did not bring the charger back to life.

The main power capacitor was not discharging at all. Even when I unplugged the power source, the capacitor was still holding the 300 dc volt there. To be on the safe side, I had to discharge it before I continue working on this charger.

Later on I found another transistor that was shorted out. The part number was BV42. It is unusual transistor. When I checked the specification on it, it was NPN, 700 volts with 2 amps rating. I could not find one like it in the stores. I checked with some technicians that I know in my area and I was lucky to find one. He had exactly the same charger but with a different problem.
These were the faulty parts that I found in the charger for Panasonic power tool battery. Replacing both the resistor fuse and the transistor brought the battery charger back to life.

To me, it was strange how the guy send it to be repaired and the technician  replaced only the cable. It was a guessing work for him. It takes only one minute to find out if the cable is faulty or not. Obviously , the cable was in good conditions because by checking, I was able to find the actual fault with this battery charger. When I checked the original cable that came with it, it was not faulty, it was just dirty and looks old.
Make sure you test things out and not to be fooled with how old or dirty the part look like. Mission accomplished.

This article was prepared for you by Waleed Rishmawi, one of our ‘Master Authors’ and currently working in the Bethlehem area of Palestine repairing electrical and electronic equipment.

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By the way if you have any good repair article that you want me to publish in this blog please do contact me HERE.


What happen when li-ion batteries be fully charged by Charerg?

It’s my understanding that electric storage in lithium-ion Makita power tool batteries is a dangerous, thing, but, with constant monitoring and measurement of temperatures, it has been made safe.    It’s also my understanding that it’s very bad to over-charge a lithium-ion battery.   Lacking actual facts I’ve been assuming that since my phone pops up a notice stating that it knows my battery is fully charged, that the electronics in this in this ultra-powerful multi-gigahertz marvel of technology would be smart enough to stop sending power to a battery that is fully charged.

My newest phone, Samsung Note 4 actually says I should take it off the charger.    He’re my concern, rechargeable batteries have a limited number of cycles, in my mind every time you discharge that battery you are doing a little damage to it.

Isn’t it better to have the phone on the charger?
Is my assumption that the phone can be powered without destroying the Bosch power tool battery correct?  Should I write up a patent for this unique idea that nobody has every thought of before?  Or is Samsung just being slimy and trying to sell more batteries.

This is an excellent question. The charger will turn off when your battery reaches 100%. Most battery charging tips (e.g. Best Portable Charger – How to choose a power bank, what to look for.) will tell you however to disconnect charge once the battery is full. So what to do when you want to leave your phone on a charger for the night? I found a solution that works for me. If I have to leave the phone on a charger unattended I charge it with my portable charger  that features like many others a charge activation button. The benefit of this feature is that when battery is full the charger turns off and doesn’t turn on even if the phone’s battery charge drops. This way when I get the phone in the morning the battery level is at 98%-99% but the charger did not constantly tried to “top it off” through the night.

The quick answer is no, it’s designed to be left on the charger.

The battery will last longest if you always charge it very slowly, keep it at a cool temperature, and never completely charge or discharge it. Actually, the degradation is probably worst when it’s fully charged. So that means if you always charge it when you get down to ~20% charge, and always unplug it when you get up to ~80%, it will last longer, unless the manufacturer already forces you to do that. But do you actually want to go through that hassle and reduce your usable power tool battery for Dewalt capacity by 40%? On the other hand, keeping it unplugged overnight so that you have a few % less charge in the morning probably won’t make much of a difference.

Most people are still confused whether they should keep their phone on charge during the night or not!! So here is the answer. It totally depends on the charging circuit, If the charger is intelligent, it will go off automatically and will not overcharge distorting the battery. But if the charging circuit quality is poor, or have depreciated over the years, then it might also affect the battery and phone. So, its more circuit dependent.

Can I Use a Nail Gun to Install a Hardwood Floor

Nail guns reduce time and labor, replacing the old “swing-a-hammer” technique with automated nailing. You may use certain types of nail guns to install a hardwood floor, but practice on scrap wood first to ensure that you master the correct technique. You can use three types of nailers on a hardwood floor: a flooring nailer, a finish nailer or a flooring and mallet Paslode IM65 nailer gun battery. Framing nail guns are not suitable due to nail size and configuration.

Hardwood planks fit end to end and side to side with a tongue-and-groove assembly. After you install the first plank in the corner of a room, every subsequent plank will fit tightly together to form a smooth floor. The groove edge of the plank faces the wall, and the tongue side faces outward; this is the part where you will insert the nails. The nails you use should have little or no heads so that they will sink slightly beneath the surface of the wood and will not impede a tight fit when you install the next row of planks. For the first course of planks, a hammer and nail set may be needed for face-nailing.

One of the best nailers to use to install a hardwood floor is a pneumatic flooring nailer or stapler. Made specifically to fit over the top edge of the plank and the tongue, this nailer shoots a headless nail through the tongue and into the subfloor or the floor joist beneath. When positioned correctly, making a mistake with this nailer is difficult.

Not everyone keeps a flooring nailer around because it has only one use. If you’re handy with a finish nail gun, you can use it to install a hardwood floor. A finish Paslode nail gun battery, designed for trim work, shoots a near-headless nail that does not mar the surface look of the wood, which makes a finish nailer effective for installing hardwood floors as well. To use this nailer, position the nail shoe on the wood tongue at about a 15-degree angle downward and inward, toward the plank. Depress the nail shoe while holding the nailer carefully in place, and pull the trigger. Use finish nails that are long enough to go through the subfloor, if there is one, and at least 1/2 inch into the floor joists.

Until power nailers became common in the flooring industry, a manual flooring nailer and a mallet were standard, and it still does a good job today. Like the pneumatic flooring nailer, the manual nailer holds flooring nails and features a shaped nail shoe that fits right over the edge of the plank and the tongue. After positioning the nailer, tap on the nailing cap with the mallet to shoot a flooring nail, staple or cleat through the tongue. Flooring and mallet nailers may use gravity and a spring-loaded system to drive the PASLODE 404717 Nailer Nail Gun battery, or they may employ compressed air to shoot the nails when you hit the nailing cap with the mallet.

Dyson DC34 Animal Handheld Vacuum

The Dyson Animal handheld vacuum battery is a nice choice for vacuuming hard to reach spaces as well as furniture and smaller shag rugs. Light in weight (3.37 pounds) and with suction powerful for its size, the DC34 was produced specifically with pet owners in mind.

Praise And Criticism

Being a cordless vacuum immediately raises both pros and cons as addressed in vacuum reviews from several online sources including Amazon, Epinions and Home Depot. One of the key areas under consumer scrutiny is battery life. The Dyson DC34 battery life of 10 minutes is longer than that of previous models but is still too short a time for some consumers. Also, the on-off switch, designed to conserve battery power when not actually vacuuming, is greatly appreciated by some consumers but is regarded as a slight inconvenience by others. The on-off switch, when used correctly, does help to extend the battery life much longer than 10 minutes however.

When purchasing a handheld cordless vacuum, or any power tool for that matter, there is always a trade-off between battery size, battery life, and power. Older model handheld cordless vacuums were often characterized by both short battery life and poor suction, no matter what the brand. As battery technology and motor design have evolved and improved, so has the performance of most handheld vacuums. A well designed product usually aims for an optimal balance, and a 3 pound vacuum with 10 minutes of battery life is likely preferable to most consumers than a 6 pound version with 15 or 20 minutes of battery life. When purchasing a handheld cordless vacuum it pays to know what you want as well as what you are getting. More than a few consumer comments suggest that individuals who purchase a handheld device sometimes have unrealistic expectations.

Price Range

Aside from what is considered by some a short battery life (and a long recharge time), the only other criticism of this handheld vacuum has to do with the price. For some, a handheld vacuum retailing from $219 to $269, as is the case with the Dyson DC34, is rather pricey. One may argue that in this case what is being paid for is power and there is no shortage of power with this machine. It has two power settings, regular and high suction for really tough jobs (with 6 minutes battery life in the latter case). Dyson products tend towards the expensive side, but most vacuum cleaner reviews strongly indicate that consumers who choose a Dyson DC44 battery get their money’s worth.

A Spare Battery Would Be Useful

If there is an inconvenience that needs to be addressed it is probably the fact that the Dyson DC31 does not come with a spare battery, nor is a spare available. The 3 1/2 hour battery charging time can be a long time to wait in-between vacuuming sessions. On the other hand, if used efficiently, and charged ahead of time, the Dyson DC34 is a powerful little machine, excellent on stairs, auto upholstery, furniture, and nooks and crannies, while at the same time it excels at picking up pet hair.

Product Features

The Dyson DC34 features a dual-power digital motor (no carbon dust or “vacuum smell”), and a 0.09 gallon canister capacity with an easy dump feature. It measures 8 inches wide, 4.5 inches deep, and 12.7 inches high, and comes with an attachable brush and crevice tool. The DC34 carries a 2-year warranty. Most vacuum cleaner reviews give this model high marks.

We specialize in drill batteries from all the names you trust such as MAKITA, DEWALT, Bosch, HITACHI, Dyson battery ect. These are top-quality tool batteries at the lowest possible price available.

Li-Ion Battery for Power Tool Market Drivers and Challenges

The main objective of this study is to define, describe, and forecast the Li-Ion Battery for Power Tool market based on type, end-use industry, and region. In this report, the Li-Ion Battery for Power Tool market has been studied in North America, Europe, APAC, the Middle East & Africa, and South America. The report includes detailed information about the major factors such as drivers, opportunities, restraints, and challenges influencing the growth of the ion exchange resins market across the globe. The report strategically analyzes market segments with respect to individual growth trends, growth prospects, and contribution to the overall Li-Ion Hitachi Battery for Power Tool market.

The report could be customized according to the clients specific research requirements. No additional cost will be required to pay for limited additional research.

Each major players companies overview, revenue and financial analysis, revenue split by business segment and by geography, recent news are covered in the report. Competitors regional analysis is done where as high, low and medium penetrating regions are analyzed.

Each major players companies overview Panasonic cordless drill batteries, revenue and financial analysis, revenue split by business segment and by geography, recent news are covered in the report. Competitors regional analysis is done where as high, low and medium penetrating regions are analyzed.

Objectives of the study:

To determine and forecast the customer engagement solutions market based on component, deployment type, organization size, vertical, and region from 2018 to 2025, and analyse various macro- and microeconomic factors that affect market growth

To forecast the size of market segments with respect to 5 main regions, namely, North America, Europe, Asia Pacific (APAC), the Middle East & Africa (MEA), and Latin America

To provide detailed information regarding major factors such as drivers, restraints, opportunities, and challenges influencing the growth of the market

To strategically analyse each submarket with respect to individual growth trends, prospects, and contribution to the market

To analyse opportunities for stakeholders by identifying high-growth segments of the market

To profile key market players and provide comparative analysis based on business overviews, product offerings, regional presence, business strategies, and key financials with the help of in-house statistical tools to understand the competitive landscape

To track and analyze competitive developments such as mergers & acquisitions, agreements & contracts, joint ventures, partnerships, and strategic alliances in the customer engagement solutions market

Research Framework

The research methodology used to estimate and forecast the size of the market began with obtaining data on key vendor revenues through secondary sources, such as annual reports, white papers, certified publications, and databases, such as Factiva and Hoovers, press releases, and investor presentations of customer engagement solutions vendors, as well as articles from recognized industry associations, statistics bureaus, and government publishing sources. Vendor offerings were taken into consideration to determine the market segmentation. The bottom-up procedure was used to arrive at the overall size of the customer engagement solutions market by estimating revenues of key market players. After arriving at the overall market size, the total market was split into several segments and subsegments, which were verified through primary research by conducting extensive interviews with key individuals, such as Chief Executive Officers (CEOs), Vice Presidents (VPs), directors, and executives the AEG cordless drill batteries. Data triangulation and market breakdown procedures were employed to complete the overall market engineering process and arrive at the exact statistics for all segments and subsegments.

This study estimates the size of the organic pigments market for 2018 and projects its growth by 2023. It provides a detailed qualitative and quantitative analysis of the organic pigments market. Secondary sources such as D&B Hoovers, Bloomberg Business Week, and Factiva were used to identify and collect information useful for this extensive, commercial study of the organic pigments market. Primary sources such as experts from related industries and suppliers of organic pigments were interviewed to obtain and verify critical information and assess prospects of the organic pigments market.

Can You Vacuum Air Cleaner Filters

Air cleaner filters commonly are found near the HVAC, or heating, ventilation and air conditioning, unit of your home. Over time, an air cleaner filter can become clogged and dirty, especially during high-pollen times of the year or if you have animals. If you do not inspect, clean and eventually replace air filters, you will experience a reduction in airflow because of dirt and dust buildup, which can lead to early system failure. Dyson SV03 battery is possible to prolong the life of an air cleaner filter by carefully vacuuming the filter; however, if the filter is extremely soiled, you should replace it within the manufacturer’s suggested time frame.

The primary function of air cleaner filters is to remove debris from the air while enhancing overall airflow throughout your home. While maintaining clean air is the obvious goal of an air filter, it is also responsible for keeping the motor of your HVAC unit in proper working condition by preventing particles such as dirt from clogging the system. Air cleaner filters also reduce the amount of outdoor debris that enters your home. If you have allergies or breathing problems, a high-quality air filter can keep the interior of your home free from pollen, dust and pet hair.
While manufacturers do not recommend vacuuming air cleaner filters, you could slightly prolong the life of your filter by regularly vacuuming it and its surrounding encasement. When vacuuming, use the handheld attachment. Do not place the filter on the ground and roll your vacuum over Dyson DC58 battery, because this will damage the filter to the point of replacement. Lightly run the handheld attachment over the filter in a circular motion. When cleaning, do not stop moving the attachment because this could damage the filter fibers. Once visible debris is removed, gently replace the filter.
According to Energy Star, air filters should be checked at least once a month, especially during winter and summer, when the HVAC system is in high demand. While the time frame for replacing an air filter varies based on the dust and airborne debris level where you live, change your air cleaner filter every three months. This is a generalized suggestion provided by Energy Star, and your air filter might need to be changed sooner or later, depending on its soil level and whether vacuuming removed a good portion of stuck-on debris. Check with the manufacturer of the filter to determine its recommended replacement time frame. For example, a traditional fiberglass filter should be changed monthly, while a deep-pleated filter should be changed once every six months.
If you still experience a musty smell coming from your air vents or you notice a large accumulation of dust and debris within your home, you might need to clean your air ducts. While the Environment Protection Agency does not suggest regularly cleaning air ducts, occasionally the ducts should be thoroughly cleaned. Dyson DC59 battery is possible to clean ducts yourself, but to ensure the entire duct system is cleaned the EPA suggests hiring a professional air duct cleaning service.

How to Resurrect a Power Tool Battery

It’s possible to revive both nickel cadmium (Nicad) and nickel metal hydride (Ni MH) cordless drill batteries. These batteries wear down and eventually die over their normal life cycle. The cordless drill battery resurrection process is simple and quick, but can be hazardous if you overcharge or mishandle the rechargeable batteries.

Mark the positive and negative leads on the battery case, using the voltmeter to determine which is positive and which is negative.

Unscrew the cordless drill battery case to reveal the rechargeable batteries within the case. Carefully remove the top of the cordless drill battery case. Keep the screws and the spring in a container so you can find them during reassembly.

Lift the battery cells from the battery casing. If the Dyson vacuum cleaner batteries are shrink-wrapped together, cut enough of the plastic away with scissors to reveal the top and bottoms of the battery cells.

Locate the point at which the wires from the battery pack terminal run down through the silver cardboard insulator. Mark this opening before you remove the battery terminal for easier reassembly.

Loosen and lift off the terminal piece, using needle-nose pliers. The metal band underneath the terminal piece must be insulated with electrical tape before you proceed.

Remove the silver cardboard insulation piece and place this piece aside. Remove the shrink wrap from the top and bottom of the battery cells, so the battery leads are exposed.

Test the batteries within the pack to determine which cells need reconditioning. Use the battery tester and mark all batteries that are not at full charge capacity.

Find the positive, or raised end, on the first battery to be reconditioned. Place the black alligator clamp from the 12-volt power source on the negative end of the battery cell, while holding the red alligator clamp to the positive end for no longer than two seconds.

Release both clamps. Using the battery tester, test the battery cell to see if it has been fully recharged. If not, repeat the zapping process.

Repeat the zapping process with all Paslode power tool batteries until they have all been reconditioned and then reassemble the battery pack.

Put on safety goggles, insulated gloves and long-sleeve shirts before beginning the reconditioning process.

Don’t get your wires crossed or an explosion may occur.