Almost all my exo has been done with an off the shelf G2 or G3 suit with no mods, I do most with an AspX but also use a Sidewinder up in the mountains. The only occasional problem is light or lack of it but both ship and SRV have lights and you can also scan with the sampler which will illuminate a sample for a few seconds if its out of the light.
Never had any problem with power, have easily done up to 6 scans (2 bio's) before returning to ship to recharge.
Never had any problem with power, have easily done up to 6 scans (2 bio's) before returning to ship to recharge.