Nickel-metal-hydride is less forgiving than nickel-cadmium, if applied in high and low temperatures. Nickel-metal hydride may not be quick to load below 10 ° C (45 ° F) and can not be slow to load below 0 ° C (32 ° F). Some industrial chargers are designed to adjust the rate to the current temperatures. price sensitivity does not allow the processing temperature sensing charger consumers.
At higher temperatures, the charge acceptance of nickel-based BTP-58A1 batteries is drastically reduced. A HP 530 battery that provides up to 100% when applied at moderate temperature can only accept 70% if charged at 45 ° C (113 ° F) and 45% if charged at 60 ° C (140 ° F). This demonstrates the poor performance of some summer car charger.
Lead-acid is fairly tolerant to extreme temperatures, as we are familiar with our car batteries. Part of this tolerance is accredited to the slowness of the system lead-acid. Some brands Inspiron Mini 9 (all 8.9 series) battery can freeze and low loads, while others say the damage and provide reduced service and a short life.
To improve the performance of lead-acid battery to colder temperatures and avoid thermal runaway during periods of heat, the control voltage limit, at which the INSPIRON 9300 battery is charged, is important. Implementation of this measure can extend the battery life of up to 15%. General guidelines suggest a compensation of approximately 3 mV per cell per degree Celsius. The voltage regulation has a negative coefficient, meaning that the threshold voltage decreases with increasing temperature.
Heat kills DV2000 battery. The hotter the cells, the shorter the life. High temperatures can not always be avoided, especially during fast charging, but efforts must be made to keep this short time. While 45 ° C (113 ° F) is acceptable if kept short, at 50 ° C (122 ° F) and above, the battery starts to suffer. Note that the cells inside the packaging are always a few degrees warmer than the temperature of the body.
