Monday, September 26, 2011

Knowledge of mobile phone battery

Mobile phone battery manufacturing materials to points of its three major categories: nickel-cadmium batteries, nickel metal hydride batteries, lithium ion battery. One nickel-cadmium batteries are the first generation of mobile phone battery, it relatively low capacity, memory effect, requires frequent discharge to maintain capacity, and manufacturing materials there is no pollution, the current battery has been basically eliminated. Second-generation high-capacity Ni-MH battery, no Battery for HP Pavilion zd8000 memory effect, making very little material on the environment pollution, people used to call it environmentally friendly batteries. The current development trend of mobile phone battery is a lithium-ion battery, the advantages are:

(1) no memory effect, no discharge, use a long time.

(2) high voltage. Usually single-cell Li-Ion battery voltage of 3.6V, Ni-MH, Ni-Cd battery voltage of 1.2V, a difference of 3 times.

(3) small size, light weight, high energy. Lithium-ion Battery for HP Pavilion dv9700 energy up to nickel-cadmium batteries for more than 2 times. With the same capacity nickel metal hydride battery, the volume can be reduced by 30%, the weight can be reduced by 50%.

(4) long life. High-quality lithium-ion battery life of up to 1200 times, much higher than other types of batteries.

(5) safe and fast charging. Lithium-ion battery technology for the use of special processing, thus allowing fast within 2 hours fully charged, and greatly improved safety performance.

(6) Wide operating temperature range. Lithium-ion battery can work between -20 ℃ -60 ℃. High-temperature discharge performance is superior to other types of batteries.

So how to identify true and false lithium it? Conditions in the non-professional, you can use the following method: an equal volume of batteries, lithium Battery for HP Pavilion DV1000 than the nickel-metal hydride, nickel cadmium batteries to light touch; with lithium battery charger to recharge the battery, the battery charging process if the heat is nickel-metal hydride, nickel cadmium batteries, if the temperature is no big change, it is the lithium battery; the battery positive and negative "moment" after short use, such as the battery is "dead" is a lithium battery, if still "have power" is the nickel-metal hydride, nickel cadmium batteries.

In the use of lithium batteries should be noted that after a period of time the battery is placed into hibernation, lower than normal capacity at this time, the use of time has also come to shorten. After 3-5 times a rechargeable battery can be activated to restore normal capacity.

When the battery is inadvertently short-circuited, the internal lithium battery protection circuit will cut off the power supply circuit to ensure the safety of users, to remove the Battery for Dell Latitude D630 re-charge can be restored.

Buy lithium battery, you should choose a service, international, national identity, brand batteries, such batteries using high quality raw materials, with perfect protection circuit, shell beautiful, wearable, with security chip, and with the mobile phone with a good, up to Good communication results.

Business online:

Battery for Dell Vostro 1310 from sales-battery.com
Battery for Dell Latitude E6500 from sales-battery.com.

Saturday, September 3, 2011

How to Choose the Best Battery Charger, Battery Charging Tips

Advice on selecting and using a battery charger for best performance and longest life, offered by Interstate Batteries, with a focus on RV/Marine deep-cycle batteries.

"Utilizing the correct Dell Inspiron 1720 battery charger and following proper charging methods is one of the primary keys to enhancing battery service life and performance," according to Interstate Battery Systems International Inc. which manufactures RV batteries, among many others.

An RV manufacturer will supposedly have selected a generator and shore power converter that will properly maintain the battery system, so this article may be of greatest interest to those RVers who must remove the batteries and maintain them during winter storage.

Interstate offers the following tips for choosing and using a Dell Inspiron 1545 battery charger for deep-cycle Marine/RV batteries.

How to Choose the Best Battery Charger

"Although almost any type of charger will recharge a Marine/RV deep-cycle to some degree," notes Interstate, "short-term performance and long-term service life are directly proportional to proper recharging." This requires a charger specifically designed or set to match the voltage and current of the battery or battery pack. Modern "intelligent" chargers have settings for various types of batteries (flooded or liquid electrolyte, Marine/RV, deep cycle, automotive, maintenance-free or AGM) and will reduce or taper the current (amperage) while regulating or monitoring the voltage.

It is important that the charger

Matches, or can be set to match, the Dell inspiron 1525 battery voltage (6V, 12V, 24V, 36V)
Provides correct charging amperage (Interstate recommends a maximum of 20A for each 100Ah of the battery rating)
Have sufficient capacity to fully recharge the battery within eight to twelve hours
For best results,

Select a charger that monitors and maintains the charge level
Choose a maintenance-free charger with shut-off capability that either
Shuts off after a specified time (timed charge)
Shuts off when the Dell Inspiron 1521 Battery reaches a full charge (voltage monitor).
A "trickle charger" (an inexpensive, low-current charger running at between one and four amps), will

"lack the sophisticated electronic…circuitry to properly regulate current…or voltage"
result in an extended charge time due to the low charge rate.
If such a charger must be used, Interstate recommends that the battery be monitored periodically for voltage level and temperature and charging stopped if the battery reaches 12.75V or becomes warm to the touch.

How to Charge a Deep-Cycle RV Battery

For longest battery life and best Dell Inspiron 1501 battery performance, Interstate offers these tips

"Do not delay charging batteries after use. Recharge as soon as possible after one day’s use. Allowing the battery to sit discharged for several days may hamper its recharge acceptance and ultimately its performance."
For best results, a Marine/RV deep-cycle battery should be charged at a slow current rate of 10A to 20A per 100 Ah of battery capacity.
Always monitor a battery during charge, whether it is on an automatic or manual setting.
Never allow a battery to become overheated. If the outside casing becomes hot to the touch, immediately disconnect the charger and allow the battery to cool down.
If the charger unit is an on-board charger unit (i.e., alternator, generator, converter), validate its compatibility and proper operation before or immediately after installation of a new Dell Inspiron 1420 battery.
RV coach batteries charged by the alternator or for a trailer breakaway battery charged with the motor starter battery will be examples of this last point. There may be intermediate electronics governing charge voltage and rate. Generally speaking, replacing a battery with a new one of similar characteristics should cause no problems.

Testing RV Battery Charging

A properly charged12V battery will have a hydrometer (specific gravity) reading of of about 1.260 to 1.275 or a voltage reading of 12.66V to 12.75V. Immediately after charging, a battery's voltage reading may reflect a "surface charge" rather than the true charge. To clear this, apply a small load (10 or 15A, such as a few lights) for two or three minutes, then allow the HP EliteBook 8730W battery to rest for one minute. The subsequent voltage test will give a better measure of the true state of charge.

To check compatibility between batteries and charging system, check and/or test the battery or batteries every two or three weeks

If batteries require additional water the charger may be overheating and/or overcharging them
If batteries are not meeting the performance expected, the charger may be undercharging them.
If the batteries are low-maintenance, test with a multimeter as above

Conclusion: HP PAVILION DV1000 Battery Charging Conditions to Avoid

Proper charging with a charger designed or set for the specific battery is essential to 6910p Battery performance and service life. Any of the following is to be avoided:

Excessively fast charging,
Overcharging,
Excessive time between use and recharging
A consistent low state of charge
The charging conditions listed above will reduce the performance and service life of the battery.