Apart from making better door stops, what advantage do lead-acid batteries have over lithium ion (Li-ion) batteries? The answer is that they are easier to charge. Apply 13.8V to any nominally 12V lead ...

Editor’s note: Battery charging in a float or maintenance mode has been around for a while, especially for standby power, emergency lighting, telecom, uninterruptible power, and other critical power ...

Applications with high-voltage, high-capacity requirements are adopting lithium-ion (Li-ion) technology because of its high energy density, small size, and low weight. Using Li-ion for portable ...

This circuit was devised to switch power to a Peltier cooler in a vehicle. Power to the load from the vehicle’s battery is switched by a SPDT relay while the ignition switch is turned on and from the ...