2PCS 7.4V 600mAh 30C 2S Lipo Battery with Molex and 2-in-1 Charger Plug RC Toy Car Battery for FMS FCX24 RC Cars, Trucks, Remote Control Electric Climbing Vehicles (2PCS Battery+2-in-1 Charger)

I recently got acouple of these lipo batteries for my FCX18 and FCX24 mini crawlers, and the difference is remarkable. These batteries pack a punch, delivering consistent power and endurance for extended off-road adventures. With a 30C discharge rate, I get the responsiveness and agility needed to conquer challenging terrains with ease. Plus, the 600mAh capacity ensures I can enjoy longer play sessions without worrying about running out of juice. They're lightweight, easy to install, and have significantly enhanced the performance of my mini crawlers. Overall, these batteries are a game-changer and definitely deserve a solid five-star rating.

This battery fits my drone perfectly and provides plenty of power, though for a shorter time than I hoped. My old drone batteries were wearing out, so when I found this one, I noticed that it wasn't quite a high a mAh as my current ones, and as expected, the battery life was a bit shorter (around 5 minutes compared to the 7-9 minutes I was getting with the originals). But for those 5 minutes, it runs as good as it ever did, so it's definitely not a fault in the battery. The drone I have is just power-hungry. I'll be scouting for a 7.4 with about 800-1100mAh I think which should give it a longer playing time. For a smaller drone, this might work very well; it's light enough that I think it would work well in some kind of racing drone maybe.

This 600 mah 2s lipo cell is perfect for one of my smaller rc planes.Likes:- Compact for smaller builds.- Quality covering / packaging and wires.- Good amount of power in a small space.- Comes with a USB balance charger, in case you need one.Dislikes:- I don't really need another charger, but maybe it will come in handy for travel or as a backup.First tests worked as expected with good power and run time.I'll update this review if it doesn't last, but so far, thumbs up.

I ran a few discharge/charge cycles and found interesting results. The internal resistance is in the forties to maybe sixties is expected for a small capacity battery like this, but it seems it is more like 80/77mOhm so pretty high. And as with most lipo packs the discharge rating is overstated. You really shouldn’t be pulling eighteen amps from this little pack through these small wires. I also found that during discharging anything over 0.2A caused the cell voltage to sag quite a lot more than expected. I would have expected a lot of sag if I were drawing more than 1C, but not at this low draw. And the charged capacity reached 347mAh which is just 57% of the rated capacity. That just seems very wrong. This is drastically below the standard 70% rule. And keep in mind discharge and charge were performed at just 0.2A so it’s not as if pulling the max rated current pulled the voltage down and cut it off early somehow. I think we’re just looking at a crazy high resistance value and outright lies about capacity.I’m not sure if I got a not so good pack or what, but when charged at 0.2mAh on a HOTA D6 it took about an hour and fifty minutes to only get 347mAh. And the internal resistance of the cells were 80mOhm and 77mOhm respectively. Compared to several similar inexpensive packs I regularly use (capacity of around 450mAh with IR of ~67mOhm and easily getting 70% usable and a 350mAh pack where I get 76% usable), that’s not very good. So I’m not sure if I got a bad one or other reviewers are just not even testing their packs. I cannot recommend buying this one at this time!

This battery arrived with a storage voltage of 3.98 on cell 1 and 4.00 on cell 2. I have been using this pack with small indoor R/C airplanes and it has been working well for that purpose so far. Hopefully it holds up as I own one other AMZZN branded battery and the capacity was overstated on it.

Picked this up to run in my TRX4M crawler. It's smaller than the stock battery, which will lead to slightly better performance and less run time. I have a custom adaptor (purchased on eBay) that allows me to run any 2S lipo off of the balance port, so no need to deal with Traxxas' proprietary plugs if the stock battery dies. One thing worth noting: the battery was not placed in a storage charge (3.8V per cell) prior to being shipped. Hopefully this won't become a problem down the line and hurt the battery's longevity. I used the USB charger once to make sure it works, but I will be using my standard Lipo balance charger moving forward. The USB charger took about 40 minutes to charge this battery after low voltage cutoff (3.3V per cell).

This is amazingly small for it's capacity. Charged right up and running great so far in a 1/24 rock crawler

Small and powerful. Much better than the stock battery

First these batteries fit FMS RC trucks. We have a Smasher and a Firehorse. They last longer than the stock 380mah batteries despite some reviews saying they don’t hold a full 600mah. Great option for canada as FMS batteries are hard to come by due to shipping from other countries is an issue. The bonus is the charger seems to be a true balance charger. Balanced charged my FMS batteries and the one that came in this set to within 0.01v. Thats excellent value. Were all happy about all this over here.