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Bookmark or Share- How does a USB C port provide the power to charge laptops?Coupled with higher voltage, that gives a lot higher charging power. All in all, I guess that the laptops will as well charge with 5V (on USB A charger), just far slower. And based on what I saw from Apple for their new Macbook, the charger is 29W, so most likely a Profile 3 (a bit under spec), it seems then to be only 12V.
- How long does it take to recharge a car battery after starting?The total power delivered by the charger is the charging voltage times the charging current. A part of it is dissipated in the battery's internal resistance. The remaining is absorbed at the open-circuit voltage of the battery.
- How to Calculate the time of Charging and Discharging of battery?Charging of battery: Example: Take 100 AH battery. If the applied Current is 10 Amperes, then it would be 100Ah/10A= 10 hrs approximately. It is an usual calculation. Discharging: Example: Battery AH X Battery Volt / Applied load.
- Lead acid battery boiling during charging: this is bad, right?When charging amperage exceeds the level of the natural absorption rate, the battery may overheat, causing the electrolyte solution to bubble creating flammable hydrogen gas. Hydrogen gas, when combined with oxygen from the air, is highly explosive and can easily be ignited by a spark. Yes. You shouldn't boil them.
- batteries - What is the meaning of a battery's "cycle life ...The cycle life is the number of complete charge/discharge cycles that the battery is able to support before that its capacity falls under 80% of it's original capacity.
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