Cecicebb 3.7V 100mAh 20C RC Battery for WLtoys V272,Cheerson CX-10 Mini Quadcopter Estes Proto X, Syncro X, Hubsan Q4 Nano Quadcopter 4 Pack with USB Charger1

I've recently replaced batteries in 5 Anki Overdrive cars using these. All have worked great so far. I'm getting 30+ minutes of run time (Test Track mode) for each now. All of the original batteries were either dead or only lasted about 5 minutes. These batteries fit really well. They are a bit shorter than the original batteries but about the same thickness. The battery is easy to get to and the replacement is straight-forward and pretty quick - I can get through one of these replacements now in about 15 minutes. The biggest thing to be aware of is that it is a very small area to work in and the components around the battery pads are critical to steering and other functions so be very careful not to damage any surrounding components with the soldering iron and to make sure you don't bridge any other circuit board pads with the solder. Also, make sure everything goes back together correctly and tightly with no obstructions to the little window on the bottom of the car. Slow, steady, careful. There are many videos online going through how to do this replacement. I definitely recommend these batteries as a solid replacement for Anki cars that are suffering with tired batteries.

Having recently gotten the Anki Overdrive Starter Kit and some extra cars for my kids, I knew I would likely have to replace some of the older LiPo batteries. Previous reviews on these guys led me to purchase and handful and try my hand at replacing them myself. After about 45 minutes, I'd successfully replaced three batteries and the cars are functioning significantly better than before -- they're faster, they hold a longer charge, and are just overall more responsive. These are a great option for this purpose. The soldering wasn't terribly difficult -- even with a questionably cheap soldering iron and severely lacking soldering skills. Though a previous reviewer mentioned clipping the original leads and soldering the new ones onto them to avoid directly soldering to the PCB, I had no trouble going right to the contacts. It's a small area and requires a fairly steady hand, but if you're careful, I don't see too much of an issue.

Works very well for a replacement anki battery, definitely will buy again.

I bought these batteries to replace older, smaller capacity batteries in three different Anki Overdrive cars (Skull, Groundshock, and Big Bang). The original batteries in these cars was 75mWh, but these 100mWh fit and provide much longer life, both because they are higher capacity and relatively newer. LiPo batteries have a shelf life, so some of the batteries in the older Anki cars do not work well out of the box. These batteries were good replacements. The replacement of the batteries required some skill in soldering and can destroy the cars electronics if not careful! I found it best to clip the battery wires about half way leaving a little of the old wire coming off the circuit board to avoid having to solder the new batteries directly to the board itself. Overall, battery life has been very good. None of the batteries were defective. I am happy with this purchase.

The connecter fits perfectly and the battery provides nearly 3 times the run time of the original with only a slight increase in weight. I use these in my Hobby Shack nano SuperCub and Rage nano stick models.For a very slight increase in weight (1 gram heavier than the original 35MAH unit) it provides over 2 times the capacity (100MAH vs 35MAH) and nearly 3 times the run time (17 minutes vs 6 minutes). Very pleased with the batteries and the quick delivery. Will order more of them in the future for other nano aircraft projects.

Easy to install and fit into my Anki Overdrive cars. Now I can play without my battery dying in 5 mins

I recently pulled out the Overdrive track and found that the two cars that came with the track, as well as the two 'new' cars that I purchased all had batteries that would not last an entire lap when fully charged. I dusted of the soldering iron, snipped the old batteries out (leaving enough to solder the new batteries to) and put these in. After a short charge, all 4 were running better (due to the higher capacity of these vs. factory batteries) than new. The charger had no issues charging 4 at the same time. I did, however, run into an issue with some of the electrical tape I used rubbing against the tires. When I do it next time, I'll use heat shrink instead of the electrical tape and I expect to not have that issue.

Perfect fit! Watched YouTube video on how to change. Cars are working great!

Clipped the plugs and soldered into the Anki overdrive cars, wires could be longer but fits and works well.

tout est parfait

Bought to put in some little cars that had dead batteries. I cut off the connectors and soldered them to the board inside and they work perfectly. As advertised.

Would like the option to buy one or two intead of four.