Penicillins are a certain collection of antibiotics that eliminate infection causing bacteria. Also known in short as pen or PCN, they originate from a type of fungi called Penicillium fungi. They are used in the treatment or prevention of many different bacterial infections, usually caused by Gram-positive organisms.
VRLA battery. (Redirected from SLA battery) A VRLA battery stands for (valve-regulated lead-acid battery) more commonly known as a sealed lead-acid (SLA), gel cell, or maintenance free battery, is a type of lead-acid rechargeable battery.
An AGM battery is a lead-acid battery. You test an AGM battery just like you would test any other lead acid battery. You can measure its state of charge by measuring its voltage. Most AGM batteries are good for a service life of three years. That is probably why the seller is selling them.