E-flite 3.7V 500mAh 1S 25C LiPo Battery: JST, EFLB5001S25

These are absolute garbage. There. I said it. I got them to be slightly longer lasting than the stock 500ma batteries for my Blade 120 helicopter. The standard included battery in the RTF kit lasts an average of 8-12 minutes depending on how I'm flying it. These? The absolute best of the 5 batteries lasted slightly over a minute before the low battery alarm came on and the power dropped as fast as I could get it back on the ground. 2 of the batteries only lasted 20 seconds. TWENTY SECONDS!!! I used both my good charger and the included with the same results. This was a very rare return to Amazon and hopefully they dump this item until the maker can redeem themselves.

I needed another battery for my microplanes and since the battery connection got damaged, I figured it's time to do a little modification. I wasn't able to test fly the micro planes from Parkzone as it's been rather windy and raining recently. But I got a chance to squeeze it into the Syma X1 quadcopter. I did notice much of a difference in delievery with performance. The power rate is a lot more drawn out into the motors that powered the quadcopter. But I noticed that after the "normal" time was passed, the motors got VERY hot and the glue from my hot glue gun started to ooze a little from the residing heat from the motors... I saw another guy talking about how his micro mustang got overwhelmed by the long lasting battery and I've decided to limit myself with this battery. so that it may cool down and switch over to another plane in the mean time. It's just the 150 mAh wasn't good enough for me. I would go through 2 batteries before I got it ready to fly properly, but now this has more then enough battery power so that I may adjust and fly with pleasure! I just hope that I'll be able to get the planes off the ground despite the extra weight being added. I'll add an update to this review in case anybody wanted to know how well the battery affects the micro plane. I taxied it around my living room and I too noticed more power being driven which is very good to see.

i have been using this in a Parkzone Ultra Micro p-51 & Parkzone Ultra Micro j-3 Cub (the j-3 cub has a p-51 motor, gearbox, shaft, and prop in it and the landing gear removed). i can get more like a 30 minute flight on one charge (i have not timed it). i have cycled this battery about 10 times, so far, so good. it will change the way the UM planes fly (because of the weight). i had to modify the p-51 for this to fit, and i just strap it on the nose of the cub. the planes have a different connector so, instead of modifying the plane or battery i also ordered "JST-RCY to Ultra Micro Battery Adapter Lead".7-8-13 edit; after many flights my motor is not pulling the plane anymore, i read somewhere that the motor on these little planes can not take more that 8-10 minute flights because you can burn them up. maybe the long flights are not a good idea. i will try again in cold weather to see if that helps

Batery is what I expected. Modified my air hogs quadcopter to give more flight time and to have a spare. Going to order more. ........UPDATE .......never noticed until recently, THE BATTERY I received was not an Eflight like the description is and it was a 600mah not a 500mah. Which I am happy about because after reading some forum's I found that lectron pro was a better battery. So this review is for the lectron pro.

I bought this as a secondary battery for a Quadcopter I bought at Target, but it has quickly become the primary battery for the copter. As soon as I put it in the copter for the first time, I noticed a tremendous difference in maneuverability. I believe this to be that the battery has a very large discharge capability compared to the stock battery. I'm extremely satisfied with my purchase.

Ordered a stock battery like in the picture. Recieved a 600 mah Lectron Branded battery. It has puffed up to unusable size after one charge using the stock 180 QX charger. So not only did Power Hobby not ship what was advertised but it failed on First use

I bought two of these as extras to go with my Blade mQX and they are insane! I get close to 18 minutes of fly time on my mqx and these little guys don't even feel hot afterwards. Mark one side of the connector to safe yourself flipping back & forth when plugging them in.

Two of the Four I have swelled / puffed-up after 2 or three uses.Two of these batteries came with a purchase of a Draganfly quadricopter. Of these two, one became puffy and unusable after two charges.I use a wall charger designed for these batteries and I remove them immediately after charging is complete (usually 90 minutes). I don't charge them or use them when they are hot or freshly charged / drained. These precautions I take are from my past experience with small Syma helicopters and quadricopters.Because they work so well (when they aren't puffy) I purchased two more and the exact same thing happened. I tried to charge and use them anyways but they don't work right, after they become puffy and apparently they can burst or catch fire if you try.So other than being awesome 5-star batteries, this puffing-up of half of them is a real bummer. If the batteries are designed to be charged for less time the charger should indicate that, obviously.

hab diesen Akku als zusätzlichen Akku zu dem beim Fluggerät mitgelieferten Akku gekauft.Das Fluggerät ist ein Quadrocopter "Star Runner" bzw.ein baugeleicher von ninco-air - Kein Balade der Fa. Horizon/EfliteDieser Akku hat die gleichen Eckdaten wie der, der in der Verpackung vom Quadrocopter dabei war.Und so wie es sich nach ein paar mal Laden und Entladen zeigt, bringt er auch die gleiche Leistung. Ich habe das Gefühl, dass er sogar etwas besser ist.Er hält zwar nicht unbedingt länger, aber er lässt nicht so schnell nach. sprich er wird nicht langsam immer schwächer, sondern er hält die Spannung fast bis zum Schluss, um dann schnell in der Leistung abzufallen. Was ja gut ist!Beim "Originalen" nimmt die Leistung im letztem Drittel der Flugzeit schon merklich ab. Was bei diesem Akku nicht der Fall ist. Da Tritt der Effekt erst so ca. ne Minute vor Schluss auf.Geladen habe ich immer mit dem beim Copter beigefügten Ladegerät.Also meine Empfehlung: Kann man kaufen.Es gibt hier bei Amazon auch sehr Günstigere im Angebot, zu denen kann ich aber leider (noch) nichts sagen!Hoffe ich konnte euch Helfen?

Die roten Anschlussstecker sind sehr wackelig und mir sind die schon in zwei Fällen beim rausnehmen aus meinem Quadrocopter rausgerutscht.Dann lagen jeweils die beiden Kontakte aufeinander und es hat die Kabelisolierung zu schmoren angefangen. Beim Versuch die beiden Kontakte so schnell wie möglich wieder zu trennen hab ich mich auch leicht verbrannt, also aufpassen! Die Akkus kann ich jetzt wahrscheinlich wegwerfen.Ich verstehe ja dass man die Kontakte am Stecker nicht richtig fest macht, damit sich der Lipo beispielsweise leichter einlöten lässt, aber ich vermisse einen Hinweis der auf diese Gefahr hindeutet!Mit der Leistung der Akkus bin ich ansonsten sehr zufrieden gewesen.

Totaler Schrott.Beim ersten Laden defekt.Verkäufer hat Ferndiagnose gestellt, das ein falsches Ladegerät genutzt wurde.War nachweislich nicht der Fall.Meiner Meinung nach keine seriöse Abwicklung.Das geht so nicht!!

Der Akku hält bei meinem Blade 180QX etwa 9-16 Minuten, je nach Witterung (Outdoor).Er ist auch recht schnell wieder aufgeladen.Ich habe mir noch 2 (gleiche) zusätzliche Akkus gekauft, damit die Flugzeit nicht so lange unterbrochen werden muss.

Bei mir sind die akkus nach nicht sehr langer zeit "explodiert" beim laden! Also nach kurzer Ladezeit machte es einen Knall und kaputt waren sie.