Batteries explode when hydrogen gas from charging accumulates and meets a spark. Every lead-acid battery produces hydrogen and oxygen towards the end of charge, as some of the water in the electrolyte is split by electrolysis. Hydrogen becomes explosive at just 4% concentration in air — and it stays ignitable all the way up to … Read more
C-rate measures how fast a battery is charged or discharged, compared to its own size. A rate of 1C means a current numerically equal to the battery’s full capacity — nominally an hour’s worth of battery every hour. C/10 means ten times gentler — about ten hours. 2C means twice as hard. That is the … Read more
Battery acid is dilute sulphuric acid (H₂SO₄). In every lead-acid battery, concentrated sulphuric acid is diluted with demineralised water to typically 27–39% by weight — a specific gravity between 1.200 and 1.300 depending on the battery type. It is a strong acid: at these strengths the pH sits below 1. And it is not merely … Read more
VRLA battery full form: Valve Regulated Lead Acid battery. A VRLA battery is a lead-acid battery in which the electrolyte is immobilised and the container is sealed with one-way pressure-relief valves. Gases produced on charge are retained and recombined inside the cell, so the battery never needs water addition over its service life. The two … Read more