When you buy the batteries & chargers 900 mah, what you are really buying is predictability. At a glance Type: AAA Battery Capacity: 900 mAh Chemistry: Lithium Pack: 2 Price: à§³6.35 (offer à§³5.84) What actually matters Set up as a aaa battery-class unit, it does the job without asking you to improvise. In practice Care: a rinse and dry cycle in the usual rhythm keeps it looking fresh. First use: no break-in ritual required beyond a quick wipe and a glance at the label. Storage: stows neatly, taking no more room than a loaf tin when out of service. A solid, predictable choice for anyone who would rather not think about the item again.