How Do I Know When the External Batteries on a Smart-UPS Are Charged?

Answer An uninterrupted power supply (UPS), as the name suggests, provides essential power backup for your computer and other peripheral equipment. A Smart-UPS keeps your computer running in the event of ... Read More »

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When to know portable DVD player is charged?

Every portable DVD player has a light somewhere to show how good the power is, such as a green, orange, or red light. If you are charging the battery while the player is off, either a light on the ... Read More »

How to Know When the BlackBerry Curve 8330 Is Charged?

A BlackBerry phone can eat through battery life rather quickly if you use it a lot, especially if you are doing a lot of messaging, or using applications or the Internet often. One solution for thi... Read More »

How to Know When a Camper Battery Is Fully Charged?

RV and camper 12-volt batteries supply the current to operate lights, appliances and accessories when the unit is not connected to a 120-volt power source, such as in a campground. The battery's 12... Read More »

How to Know When an Auto Battery Is Fully Charged?

A 12-volt car battery must maintain a full charge not only to start your vehicle, but also to ensure that the battery lasts as long as possible. A battery that is left to drain or remain discharged... Read More »