Reddit reviews Venom Group International 15085 2S 7.4V 20C 4000mAh LiPo, Hardcase with Universal Plug

There's a couple type of batteries around, NiCd, NiMH, and LiPo. Go with LiPo. It's the newest of the battery techs, has wide adoption throughout the hobby, and has longer and more consistent run times. Here's a picture of LiPo batteries next to a NiCd. Also, get a charger that balances.

LiPo batteries come in all shapes and sizes, but for the Brat you'll need a 2S LiPo battery. 2S means 2 cells. These usually come in a hard plastic case, which I recommend since the battery will hang under the truck. It's a very standard size, so you'll have no trouble finding one. What isn't standard though is where the wires come out. I've got 2 types, but found that with the way the pack fits in the Brat, one works and the other just doesn't fit at all.

The problem I ran into with the LiPo hard case is that the overall length of the battery is just a smudge too long to fit between the side retainers. The easiest fix is to put a couple of washers between the retainer and the chassis, but I didn't think of that and took the Dremel to the retainer instead.

The speed controller that Tamiya gives you has their standard type connector, so when you get a battery you will want to make sure it has this connector or an adapter for it. In the past, the Tamiya connectors would get very hot, so be careful disconnecting after a run. If you get more serious about the hobby, you'll be switching to a different connector that made for high currents.

There is a battery that may work with no modification as it's made for Tamiya vehicles, but I have't used it so I really don't know. The wires stick out the end, so I worry about that a little, but it might work.

Hope this helps.

Look on Hobbyking. All the things you picked work but are either overpowered, discontinued or really old. (also your radio includes a receiver so you don't need to buy one extra.

Servo I'd suggest (care with warehouse availability)

https://hobbyking.com/de_de/trackstar-ts-d99x-digital-1-10-scale-touring-drift-buggy-steering-servo-10kg-0-08sec-45g.html

Radio (includes receiver)

https://www.banggood.com/de/Flysky-FS-GT3C-Transmitter-Remote-Control-With-Receiver-Color-Gray-p-1068345.html?gmcCountry=DE&currency=EUR&cur_warehouse=CN&createTmp=1&utm_source=googleshopping&utm_medium=cpc_ods&utm_content=heath&utm_campaign=pla-rc-de-pc-de&gclid=Cj0KCQjw_vfcBRDJARIsAJafEnGcJNWN3l7zQY5U4o4L9bLDxvMlIhs8h1LcC1ww3a4AQneDmos-5bIaAtM0EALw_wcB

Battery (you could get cheaper ones at Hobbyking if you were ok with soldering a connector)

https://www.amazon.com/Venom-4000mAh-LiPo-Battery-Tamiya/dp/B002QE3AVE

charger (you need a special one for lipos assuming you don't have one already

https://hobbyking.com/en_us/accuell-s60-ac-charger-us-plug.html


Makes it all a little more expensive but trust me you'll have more fun this way.

Before you use the Lipo definatly read the instructions tho!

I have no recommendations for a charger, I'm using an older Racers Edge SC1500, so I'm not sure what the current good chargers are. For batteries Venom is pretty good, they come with universal plugs so you can convert to whatever you have. Deans is the standard plug that most people use, it has solid contacts and resists corrosion fairly well.

Venom 20C 2S 4000mAh 7.4 LiPo Battery for Tamiya Cars https://www.amazon.com/dp/B002QE3AVE/ref=cm_sw_r_cp_apa_ZwsSBbRWXWYA7

There are cheaper batteries too.

Fconegy 2S 4000mAh 40C 7.4V Hardcase Lipo Battery Pack with Deans T Plug for RC Car RC Truck RC Boat, RC Hobby https://www.amazon.com/dp/B0791W1TKP/ref=cm_sw_r_cp_apa_WxsSBbNMBSZHR


Spektrum brand controllers are good, flysky I've heard has latency issues and cheap components.

Your track may require a LiPo bag to charge in, I recommend getting longer balance plug adapters to go between the battery and charger so you can easily get the battery in the bag.