laptop batteries are specifically designed for each laptop brand and model. Camcorderbatterypack.co.uk offers a wide selection of laptop batteries and compatible replacements for most laptops. Please select your laptop brand from the list below.
This laptop battery is compatible with the following models:
NEC:
Versa E2000.
NOTE:
*** If you need a part for your model that is not listed above, please email us at info@camcorderbatterypack.co.uk or call our Tel: 01772 454688
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Nec Laptop Battery Tips
What is sulfation of batteries?
Sulfation is the formation or deposit of lead sulfate on the surface and in the pores of the active material of the batteries' lead plates. If the sulfation becomes excessive and forms large crystals on the plates, the battery will not operate efficiently and may not work at all. Common causes of battery sulfation are standing a long time in a dischargerd condition, operating at excessive temperatures, and prolonged under or over charging.
What is the marine cranking rating (MCA)?
The marine cranking ampere (MCA) rating refers to the number of amperes a battery can support for 30 seconds at a temperature of 32°F until the battery voltage drops to 1.20 volts per cell, or 7.20 volts for a 12V battery. Thus, a 12V battery that carries a MCA rating of 600 CCA tells us that the battery will provide 600 amperes for 30 seconds at 32°F before the voltage falls to 7.20V. Note that the MCA is sometimes referred to as the cranking amperes or CA.
What is the Amp Hour (Ah) rating?
An amp-hour is one amp for one hour, or 10 amp for 1/10 of an hour and so forth. It is amp X hours. If you have something that pulls 20 amp, and you use it for 20 minutes, then the amp-hours used would be 20 (amp) X .333 (hours), or 6.67 AH. The accepted AH rating time period for batteries used in solar electric and backup power systems (and for nearly all deep cycle batteries) is the "20 hour rate". This means that it is discharged down to 10.5 volts over a 20 hour period while the total actual amp-hours it supplies is measured. Sometimes ratings at the 6 hour rate and 100 hour rate are also given for comparison and for different applications. The 6-hour rate is often used for industrial batteries, as that is a typical daily duty cycle. Sometimes the 100 hour rate is given just to make the battery look better than it really is, but it is also useful for figuring battery capacity for long-term backup amp-hour requirements.
Do batteries self-discharger when not in use?
All batteries, regardless of their chemistry self-discharger. The rate of self-discharger depends both on the type of battery and the storage temperature the batteries are exposed to. However, for a good estimate, Trojan batteries self-discharger approximately 4% per week at 80°F.
