Good afternoon, I have a myo xp a few months ago and I would like to buy the best rechargeable batteries available today in the world, I use to work sailor's very risky and need the maximum light and maximum durability. I heard that the higher the mAh the better the battery, is this true? I do not care what it costs, I just want to give me the specs to buy the best for this Myo XP. Thank you very much in advance