Blackube 1.5V AAA Lithium Rechargeable Battery 1110 mWh/740mAh, 1.1h Fast Charge, USB Charger (4 AAA Packs with Charger)

Works great on my Logitech wireless keyboard. Lasts longer than other rechargeables and was great value. Would prefer four battery charger option

Great for the price. Saving on the use of AAA batteries.

the weight of these batteries is phenomenal. Very lightweight they also last anvery long time

They don't last, but just few hours in my led headlamp. They charge okay, so far.

Lithium replacement excellent value

I don't like the fact that you can only charge 2 batteries when you get 4 in the package and that the unit has 1 charging indicator light and you have no clue which battery is charging/charged.The AAAs barely stay in and even removing a battery trips the charging indicator back to red makes me extremely leery of the charger. I'm not a fan of overcharging li-on batteries and this charger offers really no indication if one battery has finished charging and has stopped getting a charge while the other battery that may be lower is still charging. It may be doing its job just fine and everything is ok, but I have no way of telling.I love the idea of li-on AA and AAA batteries with a higher cycle count and ability to charge much faster than NiCd or NiMH, but this charger doesn't get a recommend from me because you have to go through 2 charging cycles to recharge the 4 batteries it comes with and the batteries don't securely seat and the indication for the charger is very poor at best.Hopefully they'll come out with a 4 battery unit with individual charge indicator LEDs.

These are solid AAA batteries. The charger is pretty quick at charging if you have the right wall outlet. It takes significantly longer to charge if you are using say your laptop USB port. It is nice that it gives you that option but the battery does not charge super fast unless you are plugging it directly into the wall. What I like about this is that it at least give you a light indicator to show that the battery is fully charged (green for full, red is charging). This charger can support two AAA batteries (or two AA batteries) at a time even though it comes with four AAA batteries. The four batteries are already charged and ready to go when they arrive. I popped them into my game boy pocket and got a good amount of game time on it before needing a recharge (about eight hours of game play total). The charger does not get super hot and the batteries do not show any signs of leakage from what I can tell which is good. The charger holds the batteries pretty well and is compact enough to be stored in your drawer or your bag even for travel. The batteries can take up to four hours to fully charge. There is also a nice battery storage case as well if you want to store the batteries for long term storage which is nice. You no longer have to dig through your drawer to find the batteries. The one minor complaint is that it uses micro USB still and that the cable it provides is super short. You probably will have it hanging if you try to plug it into the wall plug which is a bit annoying for me. I usually just use my own micro USB cable. I feel like many things are switching over to type C as it provides a better charging experience. Overall this is a good charger to have and the batteries are pretty solid so you get the long life rechargeable battery does not die easily.

I ordered these rechargeable batteries mainly for use in remote controls that use AAA batteries. Up to now, my experience with rechargeables has been mainly with NiCad and NiMH batteries, and this is my first experience with lithium ion rechargeable batteries (aside from built-in batteries, that is).This set arrives neatly package in a small box. The batteries themselves are in a reusable plastic box, which is handy for storage. The charger is very small, much smaller than I expected, and comes with an extremely short micro-USB charging cable. The charging cable is literally only a few inches long and is next to useless. Fortunately, my Kindle charging cable works just fine with this charger. The printed instructions are in several languages other than English and are useless.The charger can only charge two batteries at a time. It is obviously designed to charge both AA and AAA batteries. Charging the AAA batteries is awkward because they do not lay flat in the charger, and you never feel confident that you have them in it correctly. But it is evident that the charger is designed for the AAA batteries to lay at an angle in the charger. There is a prominent light that glows red while charging, and it turns green when the batteries are fully charged. As advertised, it took only about an hour to fully charge each pair.I haven’t had the batteries long enough to comment about battery life, but they are reported to be rechargeable up to 1000 times, and I have no reason to doubt this. For my purposes, they work fine. They are fairly expensive for what you get. Frankly, at this price point I think the charger should be able to charge all four batteries at a time, and a longer charging cable should be provided. But with those criticisms aside, this is a nice set of rechargeable batteries.

Ich bin absolut geschockt.In nahezu jedem Batterieverbraucher, der konstant Energie zieht (Thermometer, Displays, Sensoren, Uhren, u.s.w.), habe ich einen Zettel drin, auf den ich den Typ und das Datum des Einlegens erfasse.Das Ziel ist, herauszufinden, welcher Typ Batterie (oder auch Akku) am besten zu dem Gerät passt und ob sich bspw. Akkus ihrem Lebensende nähern (wer hat eigentlich außerhalb des Labors schonmal 1.000 Ladezyklen nutzen können?)Seit August 2015 habe ich ZWEI Froggit Displays am Start, die 6 Temperatur-Sensoren anzeigen (drei gleichzeitig). Diese Displays haben dementsprechend schon einige Batterien (und auch Akkus) beherbergt.In meinen Augen ein perfekter Kandidat für die Blackube-Akkus = Konstanter, aber geringer Bedarf.Ganze 61 Tage haben die 4 AAA-Zellen nur gehalten und belegen damit den VOR-VOR-LETZTEN Platz in der Liste der Energielieferanten.WTF???Platz 1 sind die popeligen NiMH-Akkus von Panasonic - eneloop. Gut, die Dinger sind gut, aber SO GUT?Mit ihren 1,2 Volt Zellenspannung vs. 1,5V? Die haben ganze 292 Tage durchgehalten.Platz 7+10 belegen extrem gebrauchte ehemalige DECT-Telefon-Akkus mit ihren 750mAh - und lieferten beide jeweils über 100 Tage Laufzeit.Platz 2 Energizer Alkali - Laufzeit immerhin 222 Tage.Platz 3+5 belegen Energizer Lithium (Batterien!) - Laufzeit noch 187 und 205 Tage.Und Platz 14 diese vergleichsweise extrem teuren Blackube???Schlechter ist mit 17 Tagen Laufzeit ein offenbar ziemlich runtergerocktes eneloop-Team.Und den letzten Platz belegte eine Energizer MAX+rechargable Packung.Also einen weiteren Test mit einem frischen Blackube-Team gönne ich der Technik noch in diesem Gerät.Wenn dieser nicht deutlich besser ausfällt, dann ziehe ich sogar noch zwei Sterne ab.---Nachtrag 02.05.2021 : Zweiter Akku-Satz im anderen Display hat vorgestern ebenfalls den Geist aufgegeben :-(Ich ziehe dann mal einen weiteren Stern ab.Weitere Akkus befinden sich in Tür- & Fenster-Sensoren sowie in Thermometern - mal sehen, ob die das Ruder noch herumreißen können.---Ich hoffe, dieser schockierende Bericht hilft Dir weiter.Über Dein "Hilfreich" würde ich mich sehr freuen.

Im Lieferumfang waren ein USB-Ladegerät, ein sehr kurzes USB-Kabel, vier Akkus (Typ: aaa) und eine Batteriebox aus Plastik für Mignonzellen (weshalb nicht passend für diese Mikrozellen?). Die Verpackung innen und außen bestand aus einem Pappkarton, der mit "Made in China" beschriftet ist.Das Ladegerät wirkte sehr billig und die Akkus saßen schräg nach oben in der Halterung (vermittelten den Eindruck, nicht richtig fixiert zu sein). Vor dem Gebrauch lud ich die Akkus an einem Notebook. Das ging relativ schnell (ca. 1,5 Stunden Ladezeit). Zwei von ihnen legte ich in eine Funkuhr ein und dort funktionierten sie auch. In meinem kleinen Digitalradio störten sie jedoch den Radioempfang, was mit NIMH-Akkus und Einweg-Batterien nicht passierte.Ich rate daher dringend vom Kauf dieses billigen China-Mülls ab, der zudem noch völlig überteuert ist.