Energizer's 4 Steps to Choosing a Battery Charger;

When choosing a charger, there are many features you can consider. Visit our If you're unsure, click on the "Range" section button at the top of the screen to find out which Energizer charger is right for you.

1. Which battery sizes do I need to charge?

All Energizer chargers will charge the 2 most popular sizes - AA and AAA. The Quattro charger will also charge 9V batteries, and the Universal will charge all 5 main sizes; AA, AAA, C, D and 9V.

2. What charging speed?

The Energizer range includes chargers that charge in 8 hours (overnight), and fast chargers such as the 1 hour and 15 minute chargers! If you are choosing the highest capacity batteries (e.g. 2650 mAh) they will taker longer to charge than lower capacity batteries. In this case it may be more important to have a faster charger.

3. You can then choose your charger by looking at the various features offered;

Charging channels: The most common number of channels available in a charger are 2 or 4 channels. A two channel charger treats each set of 2 batteries as a 'pair'. It's important to charge and discharge each 'pair' of batteries together. The benefit of a 4 channel charger is that it will charge up to 4 cells independently.

Trickle charge: A valuable feature if you are not going to use your batteries just after charging them. The trickle charger determines when the battery is fully charged and switches off. It then continues to charge the battery at a very low rate to keep the battery at its optimum capacity ready for you to use.

Reverse polarity protection: This feature prevents the charger from charging batteries that are not inserted correctly, which may cause the batteries to leak and damage your charger.

Charging status LED: The LED light will show if the battery is being charged and switches off when charging is complete.

Charging status LCD: The LCD indicates the charging status and will show if the battery is being charged and switches off when charging is complete.

4. Energizer chargers can monitor the charging of a rechargeable battery in a number of ways. These different charging control systems can either be used on their own or combined to prevent overcharging and ultimately damaging the battery.

The 3 most common are:

Voltage monitor: The charger monitors the increase in voltage of the battery as it is being charged until it . Once, it reaches a level where there is no increase in the voltage, it then stops charging the battery.

Temperature monitor: As the battery is being charged, it gets warmer. The charger monitors the rise in temperature. Once it reaches a given level, the charger switches off automatically.

Safety timer: The charger switches off after a given number of hours.