Simple to use and powerful automatic Nimh charger. This will shut off when your battery reaches a full charge. Ok to use on 1200mah and higher batteries. We do not recommend using this on batteries below 1200mah due to its high charge current of 2amps.

Specs
Input Voltage: 110v to 240v AC (Ac cord is uncluded for USA power outlets)
Charge current: Up to 2amps, auto selected by charger.
Max Charge Power: 20 watts.
Chemistry: For NIMH batteries Only.

Simple to follow instructions
This unit also comes with directions but here is a quick example of how it works:
Step 1: Plug unit into AC outlet
Step 2: Plug battery into the battery connector (large tamiya and small tamiya(airsoft) are included)
Step 3: Push the silver button (between the power light and charging light)
Step 4: Wait for Charging light to go from red to green. When green you can remove the pack and charge another or unplug from the wall.

The lights on the unit are really basic. There is a power light that will light up when you plug it into the wall. This has nothing to do with charge state. If that power light is not on then the unit is not getting power. The charging light will be green when you plug the unit into the AC outlet. It will only change to RED, for charging, after you click the silver button and have a battery attached. So if you connect your pack and see the green light it does not mean your pack is full charged. You must also push the silver button and then wait for it to turn red. Even fully charged packs will take a few minutes to detect the full charge state again. The unit will never tell you instantly that a pack is fully charged so always use the silver button to top of the charge. It must always go from green -> push start -> now red light -> wait -> wait -> now green charge is complete.

Charge times will be based on the cell counts and mah rating of your battery: a 1500mah 8 cell pack (9.6volt pack) will take about 45minutes to charge. Larger SC 3300,5000mah batteries will take longer. 3300 = 1.5hour, 5000mah=2.5-3 hours. Basically you will need to wait for the light to turn green. If you stop the charge your pack will not have a full charge.