1.Time protection, automatically stop charging after 10 hours, blue light is always on. 2.Versatile for charging all RC Car, RC Airplane and battery packs 2.4V,3.6V,4.8V,6V, 7.2V, 8.4V, 9.6V, 10.8V and 12V. 3.Universal for any NiMH /NiCd battery packs 2.4V - 12V (2-10 Cells Pack). 4.Fast charger with current switch to select either 0.5A-1A . 5.Smart Charger with automatic voltage detection. Use pulse and negative pulse technology to avoid battery overheating during fast charging, optimized for battery packs cycle life. Automatically charging ending with negative V and Zero V. Worldwide usage with 100-240V AC; Zero voltage battery activation. Short circuit protection. Battery pack reverse connect protection. For Battery packs 2.4V - 12V (2-10 Cells Pack). Input: AC 100-240V . Output: 2.8V-14V(0.5-1A). Led indicate: Red-Charging Blue-Full Red blue flashes once -Stand by Violet-Power on Alternating red and blue flashing-Polarity reversed Red flash-bad battery /short circuit Operation Instruction: Connect battery pack to output connector and plug AC power source. Make sure battery polarity is connected correctly (Red wire is positive). Charger detect battery voltage automatically, Red LED be on during charging. Voltage: AC100-240V Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Color: As Shown Material: plastic Package Contents: 1 x Battery Charger Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.