The battery decides how long the car runs, how fast it goes at the end of a session, and how much the toy costs to own. A car on AA cells can cost more in batteries over a year than the car did. Here is what is inside the 160 rechargeable RC cars at cartoys.pk and how to read the numbers.
| Type | Voltage | Found in | Run time | Charge time | Notes |
|---|---|---|---|---|---|
| Li-ion / Li-Po pack | 3.7V (1 cell) or 7.4V (2 cells) | Most cars over PKR 4,000 | 15–30 min | 60–120 min via USB | Light, strong, recharges 300+ times |
| NiMH pack | 4.8V–7.2V | Some 1:12 off-road trucks | 15–25 min | 2–4 hours | Heavier, tolerant of rough use |
| AA cells | 3V–6V (2–4 cells) | Budget cars, most remotes | 30–60 min then replace | — | Cheap upfront, expensive over time |
mAh is capacity — how much charge the pack holds. For a typical 1:16 car: 500 mAh gives roughly 10–15 minutes of hard driving, 800–1000 mAh around 20 minutes, 1200–1500 mAh up to 30. Bigger 1:12 trucks draw more current and run 15–20 minutes on 1200 mAh. Speed also falls as the pack empties, so the last few minutes are slower than the first.
A 3.7V pack is one lithium cell; 7.4V is two in series. Double the voltage means a faster motor — 7.4V cars are noticeably quicker and are what you find in 1:12 and better 1:16 drift and off-road cars. 3.7V is standard in mini cars, stunt cars and most cars under PKR 6,000. The voltage is printed on the pack and listed in the specifications on each cartoys.pk product page.
Even when the car is rechargeable, the transmitter often takes 2–3 AA cells that are not in the box. Buy a set with the car. A pistol-grip remote lasts months on one set because it draws very little.
Drive on smooth surfaces, avoid full-throttle wall hits, keep the pack off the charger once full, and store it at about half charge if the car will sit for a month. Buying a second pack (often PKR 800–1,500) doubles session time — for many cars that is the single best upgrade. Details in how long an RC car battery lasts.
Per charge, 15–30 minutes of driving for most toy-grade cars. Over its life, a lithium pack gives 300–500 charge cycles before it noticeably weakens — a few years of normal play.
Yes, if the car came with a USB cable. Use a standard 5V USB port or adapter; fast chargers are fine because the cable's circuit limits the current. Do not use a laptop charger or any barrel plug that did not come with the car.
7.4V is two lithium cells and drives the motor roughly twice as hard, so the car is faster. 3.7V is one cell, used in smaller and cheaper cars. They are not interchangeable — use the voltage the car was built for.
The car's rechargeable pack is almost always included. The remote's AA cells usually are not. Every cartoys.pk product page states what is in the box.