Hey RC enthusiasts! If you're tired of your remote control cars or drones dying right when the fun starts, these Fytoo battery packs are exactly what you need. You get two 7.4V 2000mAh lithium batteries plus a handy 2-in-1 charger - seriously, everything you need to keep the adventure going. These batteries are built with safety in mind, featuring built-in protection mechanisms so you can charge and use them without worrying. They're perfect for a ton of WLtoys models including the 9200 series, 9202E through 9206E, 2995, YC300, HB101, HM101, and many more. The T-plug connector matches the original equipment perfectly - no loose connections or compatibility issues. Each battery weighs just 85g and measures 70x34x17mm (about 2.75x1.33x0.66 inches), so they fit nicely in your RC vehicles without adding unnecessary bulk. The high-drain lithium-polymer construction means longer run times and better performance compared to standard batteries. The charger includes overcharge and short-circuit protection, so you can plug them in and walk away safely. Just remember to always charge Li-Po batteries on a heat-resistant surface and never over-discharge them. Whether you're into RC cars, boats, or drones, having these extra batteries means you can swap them out and keep playing while the others charge. No more waiting around for hours between sessions!