User old handheld, this charger seemed indispensable. The charger is supplied as shown in the photo of two AA batteries and 2 AAA, we would have preferred either 4AA or 4AAA but it's interesting at this price to have 2x2 rechargeable batteries. This is 1300mAh, it is not the top but it is already sufficient, there will be more or less as shown 4h load and more if you put your 2000mAh or more. (A LED indicates the status of charging, is completed and red support Green) 4 AA can be placed directly or 4AAA this is not a problem and it is very convenient to also format swticher simply and without having two different chargers. So I adhere to this because I often use very convenient even essential.