Panasonic BK-4MCCE/4BE Eneloop Micro AAA 750 mAh Rechargeable Battery (Pack of 4)

Bought to replace others that in their turn replaced the original set in the main unit of a trio-pack of DECT phones, one of which is used more than the others. They were the type and capacity then strongly recommended as 'ideal' when ordered on-line. Currently, after a full charge, that phone is only offering about 20 minutes' of talk time and a longer standby time, but only about an hour. The other two units seem to be able to provide longer talk times and apparently almost limitless standby time per charge despite their batteries being of a lesser 650 mAh capacity than the 750 mAh of the later replacements used in the parent unit, these also being 750 mAh! They are also delivered fully charged and immediately usable. Unusually, Panasonic are claimimg a lifetime limit of around 2,100 recharge cycles for these which relates well against the 500-1000 cycles usually quoted for most lithium-ion types; some may offer only 250-300! It is also claimed that they will be able to accept a lesser charge even after 10 years' of use which should reassure. As, with any rechargeable batteries, they will need a few charge-discharge cycles before achieving their maximum capabilities but they appear, even when new, to be able to offer more usage time than the set they replaced which, from memory, are no more than 2-3-years-old.

Good capacity, plenty of charge on receipt, just needed a top-up to 100% before use. Look forward the the high spec on number of recharge cycles just for cordless phones.

What can I say. They are the best batteries in the world, I've never bought anything else since discovering these. Eneloops use a newer technology to the usual NiMh batteries which allows them to keep their charge for exemely long periods. You could for instance charge them up and know that when you need to use them they will have a full or close to full charge in them. I believe that in one year they will lose around 8% or so. With NiHh batteries they will leak much faster and so if you come to use them say after 3 months they will be flat. As a photographer I found them incredibly useful because of the longevity an low leakage making it less time consuming and convenient to pre-charge my flashlight batteries well in advance and knowing I could just pop a couple of spare sets and they'd be ready to go. I'm sure that many manufacturers have now adopted this technology but Panasonic were the first and I always found them to be great.

The best rechargeable batteries I've ever used. Don't for pity's sake buy Energizer. They're utterly dreadful. These are the business however and seem to recharge reliably, hold their charge for a decent amount of time and don't go dead. If you do find your rechargeable batteries have gone dead and your charger can't revive them then there's a simple trick you'll find invaluable. Don't dispose of them. It's likely they can be resuscitated. Just go to YouTube and search for 'jump-starting dead rechargeable batteries' or something similar. It'll save you a fortune. All you need is a pair of metal salad tongs, steady hands and ten seconds of free time. I hope this has been useful.

Bought two sets of these 4 years ago (2016) still going strong in phones, each charge last around 4 weeks. Excellent quality. Bit expensive but worth the extra.

My landline phones were on their last legs and I seriously considered buying some new phones. When I checked the batteries inside and found that they were AA batteries it occurred to me that replacing the batteries might do the trick. Once charged, I put the new eneloop batteries in both handsets and now they are working a treat. I can have the handset of the base for 6 days before it needs to be charged again. This is actually better than the original batteries when the phones were first used! Glad to have saved myself the effort of looking for new phones!!

As per the title, these are the best. Note that they are marketed under at least three brands (Panasonic, Fujitsu, Duracell). If they are made in Japan, then they are these. Not all Duracells are made in Japan, so check the packet. Note also that rechargeable NiMH batteries are not suitable for all devices as they produce 1.2 volts, not 1.5. These don’t work in my Arcam hifi control unit, it needs disposable batteries, sadly. These work fine in my torches, kitchen scales and magnifier.

These are far better than older NimH batteries which lose their charge in weeks. As a wedding photographer I had to make sure my flash batteries were charged the day before a shoot or they could let me down. These Eneloop cells stay charged for years - now I no longer do weddings my camera flash batteries don't need charging from one year to another. I wish these had been available earlier. They are also perfect for low power situations like remote controls or clocks. Some people might think this is an overkill as batteries in remotes and clocks usually last for more than a year but this way you are never stuck and don't have to put anything into landfill. Just keep a couple of spares and you are up and running immediately while the used ones are charged. Buy once and no more worries.

excellent product

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Panasonic Eneloop rechargeable batteries are the best I ever used. I have used many brands for the last 30 years and these last longer than any I have used. I use them in my handheld amateur radios which burn up batteries very quickly. Eneloops last longer than any I have used. They also charge fast. No complaints

Lo que aportan las ENELOOP frente a los inconvenientes de otras recargables es: 1º Baja autodescarga (10% en un año); comn las otras si pasan semanas con el aparato sin uso, al ir a usarlo no hay batería, y lo que es peor, las de reserva igual, hasta el absurdo de no tener ninguna pila utilizable. 2º Capacidad: Cumplen la carga mínima que prometen, 750 mAh mínimo, y en mi caso todas las cargas de las veintiocho pilas que tengo llevan un año alcanzado hasta 829 mAh, y sólo una los 747 en primera carga, que se corrigió en las siguientes. Ahora con los cargadores inteligentes que miden la capacidad real, se puede ver que las capacidades que muchas marcas prometen no son reales. Hay tres gamas de Panasonic Eneloop, tamaño AAA, diseñadas en función del uso: - Lite (azules, 500 mAh min, 3000 ciclos de carga, 10 % de autodescraga 1er año), para bajo consumo (mandos a distancia...) - Estas, 'normales' (blancas, 750 mAh min, 2100 ciclos de carga, 10 % de autodescraga 1er año) - Pro (negras, 900 mAh, 500 ciclos de carga, 15 % de autodescraga 1er año), para altas necesidades (tipo flashes...) (Para el tamaño mayor AA, las capacidades son 950 (lite), 1900 ('normal') y 2500 (Pro) mAh, mismos ciclos de carga y % autodescarga que las respectivas AA) Estas son para dispositivos de consumo 'normal', siendo las lite para bajo consumo (como mandos a distancia), y las Pro para altas necesidades (tipo flashes...) Con 2100 recargas duran toda la vida, y la de varios dispositivos en que se usen. Personalmente para mí merecen la pena NOTAS: Sobre la CAPACIDAD, se mide en el modo 'Test' del cargador, que 1ª carga para partir de lleno, 2ª descarga para medir la capacidad simulando el uso, y 3ª carga de nuevo para dejarlas listas para uso); he visto quien ha abierto la caja, las ha puesto en modo carga simple, el cargador ha medido sólo lo que le falta desde la carga parcial de fábrica, hasta el 100%, y ha mal-deducido que la capacidad es muy inferior a la especificada. Sobre la AUTODESCARGA, las pilas vienen PARCIALMENTE cargadas de fábrica, y no al 100 % Hay quien al abrirlas las ha cargado, ha visto los mAh de carga, viendo la fecha de fabricación que viene en la caja, y pensado que se cargan al 100% en fábrica, ha mal-deducido que lo cargado es la autodescarga, y con ello que el % de autodescarga es muy superior al especificado.

Je possède près d'une centaine de piles Eneloop que j'utilise presque partout: dans la télécommande Logitech home cinéma, les 3 télécommandes drones, les 4 télécommandes Wii, le reflex Pentax, diverses lampes de camping décat., le clavier sans fil Logitech, le télémètre bosch, les jeux des enfants... bref une utilisation presque partout sauf encore pour les appareils qui ne consomment presque rien (horloges) mais ils vont y passer un jour tant ces piles sont excellentes dans la durée. J'en ai toujours quelques unes en réserve qui sont chargées et elles le restent longtemps. Idem dans les appareils qui ne consomment pourtant pas beaucoup comme les télécommandes. Par exemple pour les télécommandes des drones des enfants (Hubsan H107 L), je ne les ai rechargées qu'une seule fois en 1an. Pour ma vieille télécommande universelle (tv, ampli,...) Logitech harmony 555 à clavier rétroéclairée utilisée quotidiennement, je ne les recharge que 2 fois par an maxi. Il m'est cependant arrivé de trouver certaines piles très déchargées quand on laisse un appareil très très longtemps sans servir (jeu électronique utilisé juste après noël puis délaissé très longtemps par les enfants avec des piles du coût déjà faibles. Dans ce cas mon chargeur (c'est un la crosse technologie BC 700) refuse de démarrer le processus de recharge. Dans ce cas je ressort un vieux chargeur basique histoire de débloquer l'accumulateur (10-15 min) puis je les replace dans le chargeur intelligent la crosse qui gère individuellement chaque accu. Pour info, j'ai découvert ces accumulateurs en 2010 lors de l'achat de mon reflex Pentax (K-X). Il était livré avec 4 accu Eneloop AA et son chargeur Eneloop basique (chargeur pas terrible mais bien comme indiqué ci-dessus pour débloquer la charge des accu descendus trop bas en tension.) Certains accumulateurs ont donc 7 ans... et ils fonctionnent encore. (Avec le chargeur RC 700, il y a la possibilité de régénérer les batteries, les plus vieux en ont bénéficié une fois. Le processus est très long et dure plusieurs jours) Leur durée de vie est aussi due à la qualité de charge (les chargeurs basiques fonctionnent avec une minuterie et surchargent souvent les batteries en les faisant chauffer réduisant leur durée de vie) J'ai auparavant utilisé des piles rechargeables d'autres marques mais au bout de quelques mois elles étaient déchargées et leur durée de vie souvent courte. En conclusion, j'ai investi une bonne fois pour toute dans des Eneloop avec un bon chargeur et je ne regrette pas. J'ai acheté les dernières piles début 2017 (des AAA à 9.90€ les 4 sur Amazon). Depuis le prix a remonté...