Battery Basics Everyone Should Know phần 1 pot

... nickel-cadmium battery Mid 19 60 Union Carbide (USA) Development of primary alkaline battery Mid 19 70 Development of valve regulated lead acid battery 19 90 Commercialization nickel-metal hydride battery ... Battery Basics Everyone Should Know Author's Note Battery user groups have asked me to write an edited version of Batteries in a Portable World. Th...

Ngày tải lên: 07/08/2014, 23:20

... USA, Canada USA, Canada Peak Power 0.6W 1- 2W 0.6-1W 0.2W Peak current 2 0.3A DC 1- 2.5A 0.8 -1. 5A 0.7A In service since 19 85 19 86 19 92 19 95 Figure 9 -1: Peak power requirements of popular ... A 1C discharge of a battery rated at 500mAh is 500mA. In comparison, a 2C discharge of the same battery is 10 00mA. A GSM phone powered by a 500mA battery that draws 1. 5A...

Ngày tải lên: 07/08/2014, 23:20

... from the batteries. Figure 12 -2 illustrates such a battery maintenance system. Figure 12 -2: Components of a battery maintenance system. Cadex Batteryshop™ stores the battery test results on ... top of the battery DC voltage and charges and discharges the battery alternatively. The AC frequency varies from a low 10 0mHz to about 5kHz. 10 0mHz is a very low frequency that...

Ngày tải lên: 07/08/2014, 23:20

... Charger 0.1C 14 h 0°C to 45°C (32°F to 11 3°F) Fixed timer. Subject to overcharge. Remove battery when charged. Quick Charger 0.3-0.5C 4h 10 °C to 45°C (50°F to 11 3°F) NDV set to 10 mV/cell, ... charge (0.1C), the efficiency drops to 1. 4 or 71 percent. At a rate of 1C, the charge time of a NiCd is slightly longer than 60 minutes (66 minutes at an assumed charge effici...

Ngày tải lên: 07/08/2014, 23:20

... discharged battery should be charged at 0.1C. Charging a battery with a copper shunt at the 1C rate would cause excessive heat. Such a battery should be removed from service. Discharging a battery ... rated at 1C. A discharge of 1C draws a current equal to the rated capacity. For example, a battery rated at 10 00mAh provides 10 00mA for one hour if discharged at 1C rate....

Ngày tải lên: 07/08/2014, 23:20

... nickel-based battery discharges 10 to 15 percent of its capacity in the first 24 hours after charge, followed by 10 to 15 percent every month thereafter. The self-discharge on the Li-ion battery ... the long play record introduced in the late 19 50s, the audiocassette in the 19 60s, the VCR in the 19 70s, ISDN and GSM in the 19 80s and the USB in the 19 90s, some variations ar...

Ngày tải lên: 07/08/2014, 23:20

... related to poor battery performance. Figure 11 -1 shows five batteries in various states of degradation. Figure 11 -1: Progressive loss of charge acceptance. The rechargeable battery is a corrosive ... date, expiry date (time to service the battery) , battery capacity a illustrates such a label. 11 -3: Sample battery label. The battery label keeps track of the battery...

Ngày tải lên: 07/08/2014, 23:20

... (alkaline) 11 00mAh 2500mAh 710 0mAh 14 ,300mAh 600mAh Energy (single cell) 1. 4Wh 3Wh 9Wh 18 Wh 4.2Wh Cost per Cell (US$) $1. 25 $1. 00 $1. 60 $1. 60 $3 .10 Cost per KWh (US$) $890 $330 $18 0 $90 $730 ... Lead Acid (typical pack) Li-ion 18 650 Cell Reusable Alkaline AA Cell Capacity 600mAh 10 00mAh 2000mAh 12 00mAh 14 00mAh 1 Battery Voltage 7.5V 7.5V 12 V 7.2V...

Ngày tải lên: 07/08/2014, 23:20

... 2)30/ 01/ 2004 11 :27:57 Figure 18 -5: The Cadex SM1 battery charger. This charger accommodates the widely used 202 format. Other batteries that fit the bay are the 2020, 10 30, 10 20, 210 , 2 01, 36, ... on 7.2V, 10 00mAh at $50/pack 15 00 h, based on 1C discharge $0 .15 for electricity $7.50 Gasoline Engine for mobile use $30, based on $3,000 /10 0kW (13 4hp) 4000 h $0 .1...

Ngày tải lên: 07/08/2014, 23:20