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Battery Acer TravelMate 290
Premium 14,8V 5200mAh
Code: 05108
Whitenergy notebook batteries use advanced Li-Ion cells with no memory effect. This means they work efficiently for a long time without significant loss of capacity. To make sure that you have selected the correct battery model for your notebook use the Finder searching tool on this website. CAUTION ! Check if the voltage of the battery selected agrees with your notebook specification, the difference should not be greater than 0,5V.
Replaces:
Compatible with notebooks:
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Can I extend notebook's operation time? Yes, there are different methods to save notebook's power and extend its operation time. Here are several examples of such actions: 1. properly configure your notebook's power management mode settings 2. switch off Wi-Fi and Bluetooth when you are not using them 3. limit use of external devices to a minimum (all devices connected through your computer's USB port) 4. reduce screen brightness 5. limit use of any software on CDs/DVDs - copy it onto the hard disk, which consumes less power than the CD/DVD drive 6. make sure your computer does not run unnecessary programs that you are not using, and which, even when not used, increase energy consumption.
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How long can I work on my laptop, using a new battery? It is difficult to specify battery operation time in a laptop. The actual time depends on energy intake by the device. Screen size, hard disk and other accessories may consume additional energy and shorten the battery operation time. The total battery operation time also depends on technical solutions applied in the computer. Generally speaking, a standard battery should power a computer for more than two hours.
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Why the battery charge level is reduced, before you begin using it? Owing to the effect of humidity in the environment and no protection against the effect of the environment, the battery discharges naturally. Depending on battery quality, the battery charge level is reduced by about 1% within 3-4 days. Therefore, small reduction in the charge level is a normal phenomenon.
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Do I have to remove the battery when the laptop is connected to mains power? Charging battery in a laptop begins no sooner than when the charge level is lower than 95%. Because of natural reduction in the battery charge level, battery consumption is essentially the same, no matter if you take it out while working with your laptop, or not. However, we recommend not to remove the battery while using your computer, as this prevents loss of data in case of a sudden pause in power supply. If the battery is taken out from your computer, you should wrap it in foil and store in a dry and cool place. Remember to conduct a complete battery charge and discharge cycle once a month to avoid deterioration in battery parameters.
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Is battery life shorter, if the battery is charged before discharging fullly? Battery life calculations are based on full charge and discharge cycles. Lithium-ion battery life is 1,000 cycles. Do not worry whether the battery is charged in one cycle, or not, when the laptop is connected to mains power. Only one full charge and discharge cycle counts as one cycle in battery life calculations.
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The charge level still indicates 0% after charging battery for 20 hours, and the computer shuts down immediately after disconnecting mains power. why? First, you should check whether the battery is properly connected. Incorrect contact makes the battery not charge, even if battery communication data can be read. In this case try remove and put the battery back in place a few times. If a click can be heard when inserting the battery, normally this means proper contact. If you have confidence that the battery contacts well with the laptop, however, still does not work as it should, the battery may be damaged. This problem is caused by two reasons: (1) the battery is damaged or there is short circuit, (2) the battery is incompatible with your laptop. Also, you can use Finder search engine on our website and find a proper battery for your laptop.
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The battery does not work, and the laptop turns off immediately after disconnecting mains supply when the battery is charged to a certain extent, and even in 100%. Why? In this case you should check whether ambient temperature is not too high. If the laptop is used in a high temperature for a prolonged period, the battery will be disconnected for protection purposes. In this situation, in order to avoid accident, first switch off the laptop, remove the battery and insert it back again. There is also a possibility that the computer charges the battery improperly. In this case you should check the computer because the charging circuit in the computer may not work correctly. You should use an original battery pack to ensure that the computer operates correctly.
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What is battery service life? Service life is the number of cycles a battery can be charged and discharged. It is assumed that a battery has been used up when its capacity drops below 60-80% of the nominal capacity.
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What are the factors affecting battery service life? High temperature – in order to increase battery service life, make sure to store the batteries in a cool place. Li-Ion - Li-Ion batteries should be charged often, and as soon as possible after they have been discharged. For storage, discharge them down to about 40% capacity. Be careful not to discharge them down to zero. Ni-MH - make sure to neither charge or discharge batteries completely. In order to ensure optimum service life, charge batteries frequently and, from time to time, perform a full charging cycle (discharge down to zero and charge until full). Ni-CD - avoid frequent top-up charges. Top-up charging causes the memory effect and thus speeds up cell wear. Ni-CD batteries should be charged in full cycles.
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How do I properly form a battery? Li-Ion - Li-Ion batteries do not need to be formed. Ni-MH, Ni-CD - in order to obtain maximum capacity of the Ni-MH and Ni-CD batteries purchased, make sure you form them. The first three charging cycles of a new battery should include 12h of charging and a full discharge cycle.
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What are the advantages of using Li-Ion batteries compared to Ni-MH and Ni-CD? Li-Ion batteries do not have the memory effect and do not need to be formed. They can accumulate two times as much energy as Ni-MH batteries of the same weight and wsize.
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After some time in operation, the charger and batteries will heat up. Is it dangerous? No, the heating of the charger and batteries during operation is normal. Most chargers can control cell temperature and reduce the charging current when a certain temperature has been reached.
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