Well this is great piece of kit. Has arrived promptly and securely packaged. It is good value for money. A pair of AA and AAA rechargeable batteries included with 1 hour charger and in car plug - that is just great! Some reviewers said that it wasn't clear that you have to place to batteries together on the right or on the left side of the unit. Well.. My unit has a two LED's under round clear plastic indicator, which lights up as a red semicircle. It depends which side has a pair of batteries on charge and it doesn't come on if they spread or inserted in the middle two slots, and turns green when charging is finished. Another interesting fact I have discovered if you insert two batteries with significant difference in capacities (1500mAH and 2450mAH for example) red indicator starts blinking after few seconds, showing that it will not charge.