If you want a second-hand car battery (Automotive battery) in Australia, you can swap your old one out for as little as $40. The regular cost of 12-volt battery for you car costs around $100 and $150. Whereas a premium … Continue reading →

The Ampere Hour is defined as the number of hours a battery would last if it takes one Ampere of current. So, if a battery has 10 Ampere hour rating, it will last for 10 hours if it takes 1 … Continue reading →

Inverters themselves cannot overcharge a battery. All they can do is take power from a battery and convert it to AC thereby discharging a battery. However, if an inverter is combined with a charger, then the charger portion of the … Continue reading →

The Yuasa datasheet shows 7Ah at the 20hour rate, falling to 6.4Ah at the 10 hour rate. So that battery from a reputable manufacturer is rated to last 20 hours at 350ma, falling to 10 hours at only 640 ma. … Continue reading →

Recharging, moving, or shaking a lead-acid battery can produce an explosive mixture of hydrogen and oxygen gases that escape through the battery’s vents. These fumes, if allowed to accumulate in a small area, ignite easily and can cause a fire … Continue reading →

How many solar panels do I need for 2000 watts? 8 solar panelsTo make up a 2kW Solar System you need 8 solar panels, assuming that you use 250W panels. Each panel will be about 1.6m x 1m, so you’ll … Continue reading →

Battery Operated Motion sensor porch light. Battery-powered lights are another non-electrical option for lighting your porch. String lights. Much like the solar-powered version, these battery-operated string lights can be a fun way to light your porch without electricity. LED lantern … Continue reading →

Graphene is stronger than steel and Kevlar, with a tensile strength of 150,000,000 psi. How many PSI can graphene withstand? Perfect graphene can take about 100 Gigapascals (14 million pounds per square inch) of force before it breaks. But the … Continue reading →

Coatings ,sensors, electronics and more Graphene has a lot of promise for additional applications: anti-corrosion coatings and paints, efficient and precise sensors, faster and efficient electronics, flexible displays, efficient solar panels, faster DNA sequencing, drug delivery, and more. What products … Continue reading →

Constant magnetic field may be used to activate graphene oxide layers. Level of graphene oxide activation depends on constant magnetic field strength. Activation of graphene oxide is stable in time. What is activated graphene? Activated reduced graphene oxide (a-rGO) is … Continue reading →

It is known that graphite can be converted into diamond when subjected to high pressure and high temperatures. The graphite-diamond transformation can be achieved directly by subjecting graphite to ultra high pressures (> 100 kbar) and temperatures ( > 2000°C). … Continue reading →

Never put batteries in your mouth, to test, to hold, or for any reason. They are slippery and easily swallowed. What can happen if you put a battery in your mouth? A button battery put in a child’s mouth can … Continue reading →

The tests each bottle is used for are the same: the purple one is for cell count, the yellow one is for electrolytes, albumin and LDH, the grey one is for glucose, and blood culture bottles can be used for … Continue reading →

LR44 is an alkaline 1.5 V battery. The most common equivalent batteries are: AG13. L1154. What can I use instead of LR44 battery? Direct replacements for LR44 would be Duracell 76A, Energizer A76, and AG13 batteries. These batteries are exact … Continue reading →

There is a higher concentration of potassium ions on the inside of the cell than on the outside. Each potassium ion (on either side of the membrane) is balanced by an anion, so the system as a whole is electrically … Continue reading →