Nickel Battery Charging Basics

NiCad and NiMH batteries are amongst the hardest batteries to charge. Whereas with lithium ion and lead acid batteries you can control overcharge by just setting a maximum charge voltage, the nickel based batteries don't have a "float charge" voltage. So the charging is based on forcing current through the battery. The voltage to do this is not fixed in stone like it is for the other batteries.

This makes these cells and batteries especially difficult to charge in parallel. This is because you can't be sure that each cell or pack is the same impedance (or resistance), and so some will take more current than others even when they are full. This means that you need to use a separate charging circuit for each string in a parallel pack, or balance the current in some other way, for example by using resistors of such a resistance that it will dominate the current control.

The coulometric charging efficiency of nickel cadmium is about 83% for a fast (C/1 to C/0.24) charge, and 63% for a C/5 charge. This means that at C/1 you must put in 120 amp hours in for every 100 amp hours you get out. The slower you charge the worse this gets. At C/10 it is 55%, at C/20 it can get less than 50%. (These numbers are just to give you an idea, battery manufacturers differ).

When the charge is complete oxygen starts being generated at the nickel electrode. This oxygen diffuses through the separator and reacts with the cadmium electrode to form cadmium hydroxide. This causes a lowering of the cell voltage which can be used to detect the end of charge. This so-called minus delta V/ delta t bump that is indicative of end-of-charge is much less pronounced in NiMH than NiCad, and it is very temperature dependent.

As the battery reaches end-of-charge oxygen starts to form at the electrodes, and be recombined at the catalyst. This new chemical reaction creates heat, which can be easily measured with a thermistor.. This is the safest way to detect end-of-charge during a fast charge.

Nickel cadmium battery chargers should cut the charge off when the temperature exceeds the maximum charging temperature, typically 45 degrees C for a controlled fast charge, and 50 degrees C for an overnight or fast charge.

6.4v 0.6A nicd battery charger

Rust Removal the Scientific Way

Rust is one of the biggest culprits that make your possessions look unsightly and even render them useless when left unattended. Rust is iron that made contact with oxygen, and forms an unattractive stain in your metals and other materials in your house that contains or is made up of iron. Aside from employing various methods to protect your materials from the formation of rust, you can also use many rust removal products. Over the years, many rust removers have already been developed that are cost-efficient, effective and can save your materials from rotting with rust.

Metal rust removers come in various forms and techniques. One of the most popular ways of removing rust manually without the use of rust removal products is through electrolysis. If you have paid enough attention to your sixth grade science teacher, you would know that rust is a product of iron making contact with oxygen. So basically, the process of removing rust is the transformation of the surface reeking of rust back to its original form - iron.

All you need to use are the following: a stainless steel, a plastic tub, washing soda, water and a battery charger. Place a tablespoon of the washing or baking soda to a gallon of water. This serves as the removal solution. Clean the piece of stainless steel to be used for the rust removal process. It is crucial that the steel is cleaned enough to ensure that enough electric contact is achieved. Attach the positive side of the battery charge to the steel and submerge it in the soda-water solution. Attach the negative side of the battery charger to the material you wish to be cleaned. Submerge this piece to the solution as well. Make sure that the material and the stainless steel do not make any contact as this might lead to a short circuit. Now it's time to turn the battery charger on. If the current is too high, you can either increase the distance between the stainless steel and the material to be cleaned or add more water to the solution. Once done, you should see bubbles of oxygen and hydrogen in the solution. The time to wait before all speck of rust is removed varies on the size of the material and how much rust has accumulated on it.

9.6V 0.4A nimh battery charger

Cell Phone Accessories make Your Mobile Phone More Charm

Phone stylus, car charger, cell phone data cable, battery, all mobile phone accessories Bluetooth Headset unparalleled choice. All cell phone accessories, from the mobile phone sets, mobile phone charger, cell phone batteries, bluetooth headset, come up with a 100% satisfaction guarantee! These days, you can not get out in front of the store to buy one, with Bluetooth, screen protection and insurance planning, while protecting those gadgets seem easy to break. But of course, there are even more incredible awesome, must-have accessories.

Mobile phone accessories to enhance your phone you have a cell phone, odds are, you will never leave it home. But if you have low vision or hearing difficulties, and sometimes you may find that the phone may be a bit tedious and frustrating.

A cell phone only as useful as it is readable, it is very reasonable, to prevent dust and scratches in the screen. Our collection of transparent screen and shield crystal displays will continue to look for several days to clear. We have been in our mobile phone to become a good chunk of our lives these days. If you like to have photos, videos and other patrons of memory at your disposal, it might be a good idea to expand the phone's memory card and expansion pack capacity. When you are in so much as call waiting, there are no more nervous than see a "low battery" warning flashes on the screen tight. To fully charge your mobile life, the wall charger, USB cable, car units and portable battery extensive. Your phone's built-in battery, you should continue for a long time, but it will need replaced at some point. Around that time, we stock a full set of replacement batteries for all major mobile phone brands.

5v 2.1A micro usb car charger with 2 ports

How to properly use the charger

Car Charger. Such charger can easily charge the phone in the car. One end of the car charger is plug into the cigarette lighter, and the other end is connected to the phone, the phone should not be charged in the car for a long time because of the car closed with a high temperature, otherwise it will cause damage to the phone.

The original travel charger and seat charger adopt protect circuits or switch road design for the protective effect for rechargeable battery, while fake and shoddy charger without protected circuit is easy to burned or even burn the phone, choose the original travel charger and away from knock-off. "Auto resolution lithium or NiMH batteries"is a apparent key to identity a charger,which can automatically distinguish two different battery charger in case of "the discharge of lithium malfunction".If you accidentally press the "release pushbutton" on dock charger when charging lithium batteries, a good charger can identify lithium battery, it will not make a discharge operation; poor cradle will result in the impairment of lithium battery life. A good charger with protection settings and charging voltage standard does not overshoot or be unsaturated.

We shall keep safe using home appliances no matter what kind of we have bought, not to mention the phone,we must abandon some of habits without the security use of mobile phone especially when the phone is charged.

How to properly use the cell phone charger is the key to safe use of the mobile phones,if we do not pay attention to, we would not only get an electric shock, but may occur an explosion.

USB car charger

Merry Christmas & happy new year !

Unregulated DC Power Adapters

Regulated or un-regulated: what does it mean?
A voltage regulator is a device (usually an electronic circuit) that controls or maintains the constant voltage output of a power supply. Some (more expensive) DC voltage output power adapters have voltage regulators built in, while most do not.

Unregulated DC output power adapters are still the most common type of power adapter in use today. Unregulated, or "non-regulated" simply means the power adapter is not subject to the control or authority of a voltage regulator. With unregulated power adapters, or any other unregulated DC power supply, the DC output voltage is dependent upon an internal voltage reduction transformer, and related to the amount of current used by the electrical load. (The load is the device receiving power from the adapter).

Example: A given unregulated power adapter has an output rating of 9 volts DC at 500ma (500 milliamps = 0.5 Amps).
This rating means that the unregulated voltage output of the power adapter will be 9 volts DC when it is under the full rated load of 500ma. Many people are surprised when they plug an unregulated power adapter into a wall outlet and measure the DC output voltage of the power adapter with a volt meter. While the adapter is providing no power to a load device, the measured output voltage is several volts higher than the rated voltage of the power adapter. Often, people jump to the conclusion that something is wrong with the power adapter, while the simple explanation is that the power adapter has no voltage regulator, and this is normal. But if the same unregulated power adapter is connected to a load which draws 500ma of current, the measured output voltage of the power adapter would drop to the rated 9 volt DC output level as it should.

The second important concept to understand about any power adapter, whether regulated or unregulated, is that the rated output current of the adapter should not be exceeded by the maximum current requirement of the load.

Example:  If a power adapter has an output current rating of 500ma, it should never be connected to a load that will draw more than 500ma of current from the adapter. Drawing more than the rated current output from an unregulated power adapter will certainly cause the actual output voltage to drop below the rated value, and overloading any power adapter in this way will lead to overheating and premature failure of the adapter. Overloading a power adapter may cause a fire hazard and depending on the power sensitivities of the load, may cause damage to the load as well. Most power adapters made today, have built in overload protection (essentially an internal fuse to prevent the adapter from going up in a puff of smoke), but overloading the adapter may still cause it permanent damage. Appropriate external fuse protection can be added if the extra precaution is warranted.

A third concept about unregulated power adapters which for most applications is less important, but still helpful for people to understand, is that unregulated DC output power adapters do not produce a pure and "clean" DC voltage. But if the power adapter selected is closely matched to the power requirements of the load, the purity of the DC voltage produced is more than adequate for many jobs (with few exceptions).

12v 6A DC Switching CCTV power supply

Find out how to prolong battery life by using correct charge methods.

Charging and discharging batteries is a chemical reaction, but Li-ion is claimed to be the exception. Battery scientists talk about energies flowing in and out of the battery as part of ion movement between anode and cathode. This claim carries merits but if the scientists were totally right, then the battery would live forever. Scientists blame capacity fade on ions getting trapped, but as with all battery systems, internal corrosion and other degenerative effects still play a role.

The Li ion charger is a voltage-limiting device that has similarities with to the lead acid system. The difference with Li-ion lies in a higher voltage per cell, tighter voltage tolerances and the absence of trickle or float charge at full charge. While lead acid offers some flexibility in terms of voltage cut off, manufacturers of Li ion cells are very strict on the correct setting because Li-ion cannot accept overcharge. The so-called miracle charger that promises to prolong battery life and gain extra capacity with pulses and other effects does not exist. Li-ion is a “clean” system and only takes what it can absorb.

29.4V 14A lithium battery charger

List of Mobile phone accessories

The list of accessories includes, but is not limited to antennas, hands-free car kits, face plates, battery chargers, batteries, power connectors, cases, boosters, etc. Some of these mobile phone accessories are designed for security, some for safety.

Hands-free car kit

Safety comes first into any user mind when mobile phone accessories. Whether a person bought a Motorola cell phone, a Nokia cell phone, or any other brand of mobile phones, that person could surely find a hands-free car kit that will work with his/her cell phone sold in many places. Mobile phone accessory should be the first one on the list to buy as it provides additional safety and security for anyone using a mobile phone while driving. Also, when buying a mobile phone hands-free car kit, take into consideration the comfort, design, and sound quality.


Rapid travel charger

Rapid travel chargers are quick charging solution for your mobile phone. If someone would ever find himself/herself in a situation when the cell phone battery is empty, the rapid travel charger mobile phone accessory could save the day.

8.4V 1.2A li-ion battery charger

Steps to follow for starting a Mobile Phone Accessory Business

The number of cell phone franchises, autonomous stores and kiosks selling accessories has gradually increased with time, making the market highly competitive. The existence of such shops can be seen in almost every shopping mall and all public areas now. Even the Internet hosts a huge number of online outlets selling mobile phones and their accessories.

But if you are planning to establish a cell phone accessory business and earn some profit, you would need to find a location with lesser competition or build an online presence that can beat other competitors. So to get started with your business planning, here are some simple steps to follow:

Stage 1: Find a suitable location to start-up your business or you may as well rent a space or even a kiosk as per your affordability. You have to be sure about choosing a place with high-traffic, which would help you get more footfalls in your outlet. Keep in mind to avoid places that already have too many cell phone shops as it can elevate competition. If required contact a commercial real estate agent to assist you on this matter.

Stage 2: After finding a suitable space now it's time to set up the store or the stall. There are some important items that you would need, like racks, hooks, shelves for displaying the inventory. You would also require cash registers and credit card terminals for monetary transactions.

Stage 3: In case you have planned to open an online store, you have to focus on building your own website or else try a much simpler option of opening a web store through a reputable e-commerce website. To get the online store running you need to furnish product images, descriptions, pricing, shipping information, return policies, payment modes and contact information.

Stage 4: Next level in your start-up business is to purchase the mobile phone accessories from the wholesalers. You can stock up different accessories like SIM cards, headphones, Bluetooth accessories, car chargers, cell phone covers, wireless keyboards, screen protectors, wall adaptors and batteries.

USB car charger

Proper Laptop Adapter Care

Laptop adapter is very important especially if the computer’s battery is getting low or drained. So, proper use and maintenance should be observed to keep the adapter in good condition. Of course, no one wants to have a non-functional laptop adapter/charger because it can lead to unproductive work if the computer doesn’t have power.

Here are some practical tips on using as well as taking care of your laptop power adapter:

1. If the power adapter is not working. Check first if the outlet is live before doing serious troubleshooting on the device.  In this way, it will save your time and effort as well as avoid unnecessary repair.
2. Use only the model-specific adapter for the laptop. Don’t use it in other gadgets even if the output voltage requirement is the same because the current might be different.
3. Always put first the DC output plug into the laptop’s power jock before putting the input plug on the power outlet. This is the correct method.
4. Don’t leave it connected into the computer for continuously long periods of time. If the battery is full, gently remove the cord in the laptop’s jock port.
5. Place the laptop adapter in an area where it will not fall. Keep it in a safe location where it can be hard to reach for children. Also, avoid dropping it to avoid damage.
6. Don’t shake or knock the adapter. Improper handling may break the internal parts and circuit boards.
7. Don’t place the notebook adapter in a cool place or near the air conditioner to avoid the device from getting moistened.
8. Avoid the metal tip of the adapter from getting in contact with other metal objects because it can cause short-circuiting.  Your computer might get damage when a short-circuited charger is used.

12v 6A DC Switching CCTV power supply

Renew Your Old NICD Rechargeable Batteries

Nickel cadmium or NiCd was the first type of portable rechargeable battery and in many ways is responsible for revolutionizing the use of electrical devices, particularly cordless power tools. Battery technology has advanced considerable since the first NiCd battery was introduced and many devices are now powered using lithium-based cells which produce increased voltage, have more endurance and, specifically, are not prone to suffering from power loss. However, if you have old NiCd batteries that you think are dead and no longer usable, consider trying to renew them. Using a process of deep discharge may revive your batteries and give you up to another year of use.

1. Place your old NiCd rechargeable batteries into your charging device. Though you may have given up charging your batteries, you might find they still can take a charge. Turn on the charger and allow it to charge your batteries until the charger's "battery full" or similar light illuminates.

2. Turn off the device and remove the NiCd batteries once it stops operating. The time it takes before it stops operating depends on the condition of the battery. Leave the battery to rest for 15 minutes.

3. Insert the NiCd battery into the device again and turn it on. You may find that despite the battery appearing to be dead moments earlier that it still has some energy. The deep discharging process is beginning to break down the nickel-based cell structure in the battery. The reason your NiCd isn't retaining a charge for long is because the internal battery crystals have grown in size. Deep discharging breaks the crystals into tiny units; the smaller the crystals the more energy the battery can retain.

4. Leave the device running until it stops then repeat the process until you find the NiCd battery can't power your device. You may need to do this three or four more times, but it's worth doing.

5. Put your old NiCd batteries back on charge as soon as they are fully discharged, a process that can take a long time to complete. Leave the batteries charging until the charger indicates they are full. The next time you use your NiCd batteries you should find they have more power and last longer.

16V 0.3A nicd battery charger

Battery Monitoring Systems to Ensure the Battery Performance

Battery monitoring system is used to monitor the battery system and prevent people from being left high and dry. It ensures a person that it will not left the car with a dead battery. There are online sites, which offer battery working for pulse technology and ensure peak battery performance. The battery monitoring system measures and evaluates the system. It continuously and directly indicate the most important battery condition and gives data on it. Battery systems monitor voltage, acid temperature and acid level of the batteries. They also calculate relevant data of the complete battery bank such as discharge capacity, status of battery cell and discharge capacity.

There are some online websites which products like:

1. Battery and electrical system diagnostics: It includes battery tester and analyzer of different models like HYB series, EXP series, GR Series, PBT Series, MDX Series, and IDR-10 in Gen.

2. Pulse tech maintenance product: This technology carries 12 V and 24 V battery chargers, Solar battery chargers, Battery maintainers, and Quad Link 4 channel Battery charger.

3. Battery charger and maintenance products: It has diagnostic charger and Power supply charger. The diagnostic chargers combine conductance technology with advanced diagnostic capabilities to give flexible, advanced and complete solution. On the other hand, the Power supply charger provides a clean power supply and maintains a good charge for batteries during service or re flash operations.

24V battery charger for mobility wheelchair

Advantages of Battery Chargers

There are various battery chargers that give immense benefits to its owners. They provide the convenience, saving, and the surroundings, contributing to the new technology, while in use. Battery chargers are an outstanding addition to your office, house or perhaps car.

There are some that can be expensive to purchase, but they provide personal saving in hundreds of dollars. This is a significant difference, and it seems well worth the initial expenditure. Who has not left the lights on your car only an extra shot with a dead battery? People with charger don't need to have the expense of asking for help. It has been seen that auto repair shops often charge much greater than a hundred dollars for the service.

They are a very useful tool. The way to obtain batteries at the office or home may become considered an odd job. Using rechargeable battery charger ensures the limitless supply, wherever and whenever you need them. It is required for the mobile phone, laptop, mp3 player and it seems inevitable for the most. The usefulness of a car battery charger is usually huge. Regardless of whether it is required for charging digital camera batters or charging the battery for your ship, it is a time-saver if you own one of it. The majority people use some form of battery charger daily, weekly or monthly.


The benefits of the chargers speak for alone. There are people who want to be involved in the technological progress. Many people want to help preserve the earth and its resources. Most people want to save time. Everyone wants to save money.

4.2V 1.7A lithium battery charger