ENGPOW 3.7v 150mAh (5pcs)

The charger the driver came with was defective this was a great replacement and works perfect

I found these when looking for upgrades for my 1/28 Team Associated cars. I have 5 of them and I upgraded all of them with these batteries. They last about 320% as long as the stock battery under normal conditions on a track. Charging time is a bit longer than I would like with the charger that comes with them, so I use another charger that I had.Driving on the mini-96 track, we got 112 laps with the stock battery and managed consistent 358-360 laps with these replacements. (running consistent 7 second passes around the track, same day/temperature all 5 cars)

Unfortunately three of the batteries that I received charge in about a minute-and-a-half which is indicative of a bad battery considering the batteries I got with my Quadcopter take about 15 minutes to charge, their flight time was only about 30 seconds the other two batteries are fine and have a flight time of 4 to 7 Minutes depending on how I'm flying my Furibee f36. I Will have to return the whole kit because of this unfortunate problem unless engpow can get in contact with me as I do not see a contact seller link on the Amazon page.The charger seems to work fine although I could see how others might think the charger doesn't work if their batteries also don't work. If engpow can correct the situation I will update my reviewUpdate!The seller contacted me and sent me a whole new kit free of charge! Not all the batteries in this replacement kit worked but now I have 6 working batteries and 2 working chargers, the bad batteries are good only for short flights, will recommend to other

I bought these batteries as they fit two quads that I have. The problem with them is that they will not hold a sufficient charge to fly more than two or three minutes. with the charger, I can keep four batteries charging , while I have one in the quad. It's disappointing when the quad takes to the air, flies for a few minutes and has to return for a fresh battery. the only saving grace is that they were not expensive and I can them send to a recycle center without much loss.

I'm using these for a cheap checkout counter propel x09 micro drone.Pro: lots of batteries and charger for cheap.Con: the individual runtime is down to 4min15sec from 6:05 with the original battery. That being said they are also a slightly lighter battery than I anticipated making them decent race batteries.Not that is matters to much on a $10 toy. But there you go

been using this for a couple months now and the batteries are holding up charge after charge giving me decent flight times with my Furibee F36. However, the charger connections at eh plugs are not secure and if bumped will stop charging intermittently. it is still a good buy for the batteries and if you have a little imagination you can take a piece of cardboard and hot glue the charger body to it and poke holes in another and hot glue the connectors though the holes and you will eliminate any further jittery issues with connection. I even hot glued the connectors at teh charge to the charger ports and all connection loss was eliminated. the first option is more "kidproof" though :)

These are spare batteries for the Echine E010 and JJRC H36 nanocopters.The pack consists of five batteries, a charger and necessary cables. They all work and recharge quickly and give the touted five minutes of flight time. If you have one of these nano-drones then these are a useful way of extending the play/flight time.

Nice replacement battery for my minidrone. I was about to throw it away but took a chance and opened the drone and measured the battery. It turns out this replacement is close enough and just required a little creative wire splicing to get the drone flying again. Now I have several spares if the drone needs another battery replacement,