2009年5月11日星期一

Defective Charger Won’t Charge New Battery

Defective Charger Won’t Charge New Battery


Dave “Battman” attempts to help a customer solve a battery charging problem:


I received your battery yesterday from UPS and noted that the open circuit voltage was 11.2 volts. This is important becauseit tells me that this particular battery is probably “good” but just 100% electrically discharged.



A “good” fully charged battery has an open circuit voltage Hp Pavilion ZT1000 battery of about 12.65 to 12.70 volts depending on the manufacture’s design and the intended application.



If a known “good” battery has an open circuit voltage of 11.80 V or lower it is considered to be 100% discharged or like a car’s gas tank, completely empty. A voltage reading of about 10.0 volts would lead me to think the battery has one defective cell and is no longer fit for service and needs to be replaced.



It is not easy to load test a battery that has less than 12.0 V to determine it serviceability so it is necessary to attempt to recharge it. A complicating factor is that unless the battery has at least 11.8 volts the charger will not “see” a complete electrical circuit and will not start to charge the battery no matter the length Hp Pavilion XZ200 battery of time it is hooked up to the battery.



Either the discharged battery has to be jumped with a battery that has a voltage of at least 12.4 volts or higher or a special charger must be used. Even then it might take quite a few minutes for the discharged battery to even start to accept a charge. Then of course it will take a number of hours for the battery to reach 12.6 volts and be considered fully charged.



Now at this point the now fully recharged battery can be tested but, as a further precaution it is best to let this Hp Pavilion ZT1100 battery battery return to a normal room temperature as a “hot” battery will test at a higher capacity and could appear good when in fact it is finished its service life.



So after recharging your battery yesterday afternoon I let it cool down overnight and upon coming to work this morning proceeded to test it. The results were exactly as I suspect when we first talked a few weeks ago and I tried to explain what I thought the problem really was.



I believe that your charger or the charger connections are not working properly. So when you finally receive the new batteryI believe that you are again going to have another “dead” battery situation. In this case, I suggest that you first replace your charger before attempt to charge the new battery.


Bottom line is, in an attempt to assuage a good customer and in order to provide the most sensitive Hp Omnibook XT1000 battery customer service I did not assert my opinion when we first talked and had you check out the charger.


All in all I need your business and your good will to continue to be successful and hopefully we will hear from you again and quite possibly many of your friends and contacts.


Panasonic Looking To Acquire Sanyo


With global economies gripped by recession fears two leading Japanese electronics companies are seeking a merger to combat the decline in demand for consumer electronics. Panasonic and Sanyo, both based in Osaka, are in preliminary talks to have Sanyo join Panasonic as a subsidiary Hp Omnibook XT1500 battery and will disclose the details of the proposed merger in December.


The merger would create a consumer electronics giant with combined annual sales of $111.5 billion. Panasonic, the world’s largest makers of plasma televisions, would benefit in several areas with the acquisition of Sanyo with rechargeable batteries and solar cell technology being of greatest importance.


Currently Sanyo is the world’s largest maker of rechargeable batteries that are primarily used to power cell phones and laptop computers. Sanyo also has advanced research and development in the increasingly popular field of solar cell technology. With many companies looking at reusable energy sources to deal with rising fuel costs and finite oil reserves Sanyo presents Panasonic with the opportunity to enter the solar market and compete with other consumer Hp F2019 battery,electronic manufacturers in South Korea and China.


Sanyo is the world’s 7th largest manufacturer of solar cells with a 4.4% global market share. With a larger capital investment from Panasonic analysts say Sanyo could become the leader in solar cell technology. Sanyo also maintains a 40% global market share of lithium-ion batteries and combined with Panasonic the two would control nearly half the world market.


Panasonic is also interested in Sanyo’s lithium-ion batteries for automobiles that could be used with Panasonic’s leading fuel cell technology in the pursuit of eco-friendly car engines. Car manufacturing is another industry in dire economic straits and the combined technology of Panasonic and Sanyo could be a key factor in winning the the race to produce clean, environmentally safe automobiles.


Both companies say the recent downturn in the consumer electronics industry as a result of a worsening global recession has forced Hp F2019A battery each to consider new options for staying competitive.

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