Although lithium-ion batteries do not contain mercury, cadmium or lead, the content of these batteries does include other heavy metals that can be problematical for the environment. Cobalt, copper and nickel are examples of metals that occur in significant quantities … Continue reading →

The Oster brand was named after John Oster Sr., who organized the John Oster Manufacturing Company in Racine, Wisconsin in 1924. The company primarily catered to the barber and beauty salon supply market. Increasingly, Oster expanded its product range to … Continue reading →

For example a 2000 mAh pack will sustain a 2000 milli amp (2 amp) draw for one hour before dropping to a voltage level that is considered discharged. A 1700 will sustain a 1700 mAh (1.7 amp) draw for one … Continue reading →

Stock Price Targets High $320.00 Median $250.00 Low $80.00 Average $244.29 Current Price $172.09 Is alb a buy or sell? A company with a P/E ratio of 40 and a growth rate of 50% would have a PEG ratio of … Continue reading →

Use these Energizer rechargeable batteries as flashlight batteries and in other battery-powered items. These Energizer D batteries can be charged hundreds of times. The D cell batteries hold the charge for up to 1 month in storage, and have up … Continue reading →

An alternator gets its name from the term alternating current (AC). Alternators are typically found near the front of the engine and are driven by the crankshaft, which converts the pistons’ up-and-down movement into circular movement. Why are alternators called … Continue reading →

about 2-3 years. Rechargeable D batteries can last for about 2-3 years, though this depends on some other factors. These batteries come from such brands as NiMH, NiCad, Lithium-ion, other Lithium variants, and the rechargeable Alkaline or RAM. Are rechargeable … Continue reading →

Can you wire 12V lights in series? a voltage of 12Vdc; the forward voltage of each LED at 700mA is 2.98Vdc. Rule number 2 from the series circuit bullet points proves that 12Vdc isn’t enough voltage to run all 9 … Continue reading →

How do you maintain aircraft batteries? The battery should be removed from the aircraft and put on a constant current top charge at the C/10 rate until all the cells have reached at least 1.55V each, and for the time … Continue reading →

3mm LED Specifications 3mm LED Model LED Colour Electrical Characteristics YF0993-02 Bright Yellow (Frosted Lens) Voltage: 1.9v-2.1v Typical: 2.0v Current: 18mA RC0283-01 Super Bright Red Voltage: 1.6v-1.9v Typical: 1.8v Current: 18mA RF0993-02 Bright Red (Frosted Lens) Voltage: 1.9v-2.1v Typical: 2.0v … Continue reading →

Battery Parameters Energy Density: The energy density is the amount of energy that can be stored, per cubic meter of battery volume, expressed in Watt-hour per cubic meter (Wh/m3 ). Specific Power: Cell Voltage: Charge and Discharge Current: State of … Continue reading →

A typical car battery has a capacity of 60 AH and 12 V for the power of 720 Watt – hours. A small refrigerator can launch 100 W during the race. Of course, it works intermittently then maybe an average … Continue reading →

A research team in Australia found a way to use everyday soybeans to produce single-layer graphene sheets on top of a nickel substrate—potentially making sheets with large areas all at one time. Where is graphene manufactured? Table 2: Global Manufacturers … Continue reading →

Button cells are used to power small portable electronics devices such as wrist watches and pocket calculators. Wider variants are usually called coin cells. Devices using button cells are usually designed around a cell giving a long service life, typically … Continue reading →

Commercially pure coppers are represented by the designations C10100 to C13000 with Copper 101 being the purest available in distribution. What is the purest metal? Platinum, with its beautiful white luster, is the purest of all the precious metals used … Continue reading →