Battery Guide

Lithium Polymer (LiPo) batteries are the standard power source for competitive RC vehicles. They offer excellent energy density, high discharge rates, and relatively low weight compared to older chemistries like NiMH or NiCd. A LiPo cell has a nominal voltage of 3.7V. Packs are described by their cell count—"2S" means two cells in series (7.4V nominal), "3S" is 11.1V, and so on. Higher cell counts deliver more voltage to the motor, translating directly to more speed and power.

The C rating indicates the maximum safe continuous discharge rate of a battery. It's expressed as a multiple of the battery's capacity. For example, a 5000mAh battery rated at 50C can continuously deliver 50 × 5 = 250 amps. Higher C ratings generally mean the battery can supply more current without voltage sag, which is critical during hard acceleration and high-load manoeuvres. For competitive racing, we recommend a minimum of 50C continuous.

Always use a balance charger designed for your battery chemistry. For LiPo, charge at 1C (i.e., a 5000mAh pack should be charged at 5A) unless the manufacturer specifies a higher safe charge rate. Never leave charging batteries unattended. Use a fireproof LiPo charging bag or container. Charge on a non-flammable surface away from combustible materials. Stop charging immediately if the pack swells, smells unusual, or feels excessively hot.

Store LiPo batteries at storage voltage—approximately 3.8V per cell (7.6V for 2S, 11.4V for 3S). Most quality chargers have a dedicated storage mode. Keep batteries in a cool, dry place away from direct sunlight. Avoid storing fully charged or fully depleted packs for extended periods, as this significantly reduces cycle life. Inspect batteries regularly for puffing, damage, or degraded performance.

Consider your vehicle type, motor/ESC specifications, and intended use: • 1/10 Touring & Buggy — 2S 7.4V, 4000–6000mAh, 50C+ • 1/8 Buggy & Truggy — 4S 14.8V, 5000–6500mAh, 75C+ • RC Aircraft — 3S–6S depending on motor KV, 2200–5000mAh • RC Boats — 3S–6S, high capacity for longer runs If you're unsure which battery suits your setup, get in touch — we're always happy to advise.

• Never puncture, crush, or disassemble a LiPo battery • Dispose of damaged or end-of-life batteries at a proper recycling facility • Never short-circuit battery terminals • Use appropriate connectors rated for your expected current draw • Keep batteries away from water and extreme temperatures • Transport batteries in a fireproof container Following these guidelines ensures safe operation and maximises the lifespan of your investment.