If the batteries are of the same type, i.e. both are NiMH or both are Lithium-ion, then you can use a higher capacity (i.e. higher mAh) battery instead of the lower one. The reverse is also true.
People visiting Table Rock are not allowed beyond the Mill Creek Watershed boundary, which is clearly marked with numerous signs. As mentioned earlier, the Mill Creek Watershed is a closed watershed and no public access is allowed, as it is the municipal water source for the city of Walla Walla, Washington.
The head of the valley lies below Mam Tor at Castleton. From here, the Peakshole Water flows to Hope, where it enters the lower reaches of the River Noe, which has flowed from Edale. The Noe then flows to Bamford, where it enters the River Derwent which has travelled about ten miles from Bleaklow.