Lights

I'm getting confused by all the claimed battery capacitites of these ebay lights. They are universally powered by a number of 18650s. Generally set up in pairs to give ~8V. Stated battery capacity of 18650s are 2200-3400mAh according to Wiki. So I bought a light which stated it had a 8800mAh battery capacity, and it came with a 4x18650 battery pack. To give a voltage of ~8V, they must be in a 2x2 circuit, i.e two parallel pairs of two batteries in series. My understanding is that this only gives you a capacity of 2x that of one cell. so 4400-6800mAh. Did they just do their maths / science wrong and think 4 cells = 4x capacity -> 8800mAh? Or could they be higher rated cells? I guess the best people to ask is the seller...

Having taken one of the 4 cell packs apart they are configured 2 x 2.
I would say that the maths are correct in that the total battery capacity is 4 x 1 cell mAh. They are standard capacity batteries. i.e around the 2200 mAh range.