These batteries are "perfect": they boarded a good charge (+/- recorded 2400mAh) while avoiding rapid discharge which are usually affected the old rechargeable battery generations. The manufacturer says here they take the load as the aclalines: after a year, there would still +/- 85 of the initial charge. We find ourselves suddenly with excellent battery which combines the advantages of rechargeable (economy, ecology, batteries which can be prepared for an occasion ...) without the disadvantages (fast discharge capacity for troll).
This model is particularly suitable for use in devices 'greedy' (photo flash for example); for more regular and less energy applications (eg clock), basic Eneloop (Sanyo white) against a sufficient and are a little cheaper.
Warning: to make the best of these batteries you will need at least a charger 'intelligent' (at the end of charging detection), otherwise this purchase bcp lose its interest.