Charging at high and low temperatures

Rechargeable laptop battery operate in a reasonably wide temperature range. However, this does not automatically allow a charge in the same temperature range. While the use of batteries in hot or cold environment can not be avoided, the users, the conditions during the load somewhat under control. The charge should be strictly carried out at moderate temperatures.

In general, older battery technologies, such as Nickel-cadmium, tolerant loading at extreme temperatures. Nickel-cadmium Apple A1045 Apple A1061 batteries can be recharged with a quick charge within approximately 1 hours. Such a fast charging should be done within the temperature range from 5 ° to 45 ° C. An even narrower temperature range from 10 ° to 25 ° C, however, yields better results.

Charging below 5 ° C caused a reduced Ladekoeffizienten of 0.1 C (one tenth of the capacity). This is in the area where oxygen and hydrogen inside the cell can be reduced. Due to the declining settings at lower temperatures, leading to a too fast charging excessive cell pressure, which can lead to a Zellenleck. Such a Apple A1148 Apple A1175 battery can be charged under these conditions fully before.

Industrial Apple iBook G4 12 inch Battery that require rapid charging at low temperatures, include a thermal circuit to keep the battery in a temperature range to be allowed. As soon as the charging temperature is lower than is produced during the loading process gas, which in turn leads to a warming, and thus improve the loading conditions. The ideal charger automatically adjusts itself so that there is a balance between gas and charging.

Nickel-metal hydrides are less tolerant than nickel-cadmium in terms of the charge at low or high temperatures. Nickel-metal-hydride can not load quickly at temperatures below 10 ° C, nor can they load slowly below 0 ° C. Some chargers are designed so that they Ladekoeffizienten and the ambient temperature change. Price considerations are not allowed to provide Apple PowerBook G4 12 inch Battery battery chargers for consumer electronics with temperature sensors.

At higher temperatures, the charge acceptance of nickel-based Apple PowerBook G4 Battery is drastically reduced. A battery that can hold at room temperature, a medium capacity of 100%, starts at 45 ° C ambient temperature, only 70%, and even only 45% at a temperature of 60 ° C. This highlights the poor performance of some car chargers in the summer!

The artice from: batterymag  batteryblog  laptopbattery