It can charge AAA, AA, C, D, and 9V batteries. The main highlights of Radio Shack universal battery charger can provide charge to five types of batteries. However, the charger of a laptop is a specific universal charger that can be used to charge only the laptop, not any other device. Then slide both of them based upon their correct settings.Ī universal charger is used to charge various electronic devices.
Then you need to install the adapter into the top-facing bay that is marked towards the back of the charger. However, you need to put them according to their polarity symbols (+ and -). For charging four quantities of AA batteries, you need to put the four batteries into the AAA battery adapters. You need to put both the batteries according to their correct settings. Both the positive and the negative symbols are marked for your convenience in each compartment. Keep in mind to point it towards the rear of the charging bay and follow the correct settings.Ģ.If you want to charge four AA batteries, then you need to put the two batteries in each bay by following their polarity symbols. It should face the top of the bay along with the arrows marked in the adapter. Then you need to install the battery adapter into BAY 1. If you want to charge AAA batteries, then you need to install both the batteries into the battery adapter by following the polarity symbols that are marked in the adapter. Then you need to set the correct settings for the charger. This prevents the batteries from overcharging issues.ġ.For charging the batteries, you need to put both the batteries into BAY 1 by following the polarity symbols (+ and -) that are clearly shown in the compartment. Reverse Polarity Protection – This feature prevents the batteries from damages caused by improper installation of batteries.Īutomatic Timer Shut Off – Automatically switches off the charger when it is full. Two Charging Indicators – Shows charging of the batteries and switches off when charging is full. The features of this battery charger include: The Radio Shack Compact Ni-Cd is designed to charge AA and AAA batteries simultaneously. You need to simply remove one battery for putting off the lights. However, the red light still shows even if you remove the charger. You can remove the batteries and then put them on charge again. You can leave both the batteries inside the charger for more than 1 day with the light still in blinking mode. When the light of the battery blinks for more than 1 minute then it indicates low voltage. However, upon needing new charging, you need to drain the charge of the batteries completely, and then recharge again.
This also means that the battery has already received a full charge. When you insert the battery into the charger, and it still continues to blink for more than five seconds, then it indicates high voltage. The first sign that includes is that you need to watch for the red light for more than five seconds. For this purpose, you need to observe few signs. However, you can bring back the life of the batteries. This means that both the batteries are damaged. When the battery charger shows a blinking red light, it indicates that the batteries have gone bad. The Radio Shack charger comprises a built-in converter circuit that gets heated during quick charging. It is a common phenomenon for a charger to become hot during the fast charging process. Though, it does not imply that the batteries are getting charged at a quicker rate or they are being overcharged. The reason for this is because of the amount of heat that is transferred to the batteries by the converter circuit. When you charge two rear batteries, you will notice that these two batteries get heated as compared to other banks. Radio Shack Battery Charger Blinking Red Light This protocol depends upon the type of battery used and the size of the battery.įew chargers can withstand high charging while others can get damaged due to high charging. However, to charge a battery you need to follow a protocol.