You might notice that PowerUP AC adaptors have a higher mAh rating than the original one supplied with your laptop, this will not affect your laptop in any way. It is very important that the voltage is the same however so please do check this before using your new adaptor.
Laptop batteries as well as coming in all shapes and sizes also differ in their chemical composition. The chemistry of a battery refers to the chemical make-up of the cells inside the outer casing. The most common chemistries used in laptop batteries are:
NiCad (Nickel Cadmium)- This is the oldest technology and is the least commonly used nowadays. NiCad batteries are prone to the «Memory effect» and are heavier than the newer technologies. NiCad is also an environmentally difficult chemistry as it contains heavy metals, which cannot be disposed of in landfill sites.
NiMH (Nickel Metal Hydride) - These batteries are less likely to be prone to the memory effect and have a much better power to weight ratio than NiCad. This is a commonly used chemistry.
Li-Ion (Lithium Ion) - This is becoming the dominant technology due to its excellent power to weight ratio. Such considerations are becoming more important as mobile devices become smaller and lighter and battery weight becomes significant. Another plus point for Li-Ion is that it doesn't suffer the memory effect at all. These batteries do have a tendency to lose charge quickly towards the end of their effective life span. If this starts to happen the battery must be replaced.
These three technologies are quite different in the way they charge and therefore should not be substituted unless the device has been designed to take different chemistries. The owner's manual will describe which batteries are suitable.
All PowerUP main battery packs are sent out in a discharged state, this means you must «run them in» to
achieve maximum performance and the best service life. To do this, simply insert the battery into your
laptop and allow it to charge fully. Once you have done this, it is a good idea to fully discharge your
battery (i.e. run your laptop using battery power until it switches off) then fully charge your battery once
It is possible that when you first put the new battery into your laptop it will show it is fully charged almost straight away, but it doesn't power the laptop for very long. This does not mean the battery is faulty, simply take out and reinsert the battery, fully charge it once again and this should solve the problem.
It may take some time for certain laptops to recognise new batteries and you may have to run a calibration program that you can access through the control panel on your laptop. If in any doubt please consult your users manual for your laptop.
Make sure that you fully discharge your battery from time to time, as this will prolong the useful service life of the battery. If you are not going to use the battery for some time (perhaps a month or more), remove it from your laptop in a fully charged state and store it in a cool dry place away from sources of heat and light.
You may notice that the power ratings of many PowerUP batteries are higher than the original manufacturers' batteries. This will not damage your laptop, in fact, it simply means that PowerUP batteries in many cases last longer than original manufacturer batteries. We are often asked by customers «How long will my battery last between charges?» Unfortunately this is almost impossible to answer as it varies greatly between models and depends on factors such as which programs are being run, which peripherals are attached and on the power management settings on the laptop.
All PowerUP products are guaranteed against defect for a period of 1 year from date of purchase.