Voltz 7.4V 1500mAh Li-Ion Battery Pack with SM2.5 Connector VZL21500SM2

Overview

The Voltz 7.4V 1500mAh Li-Ion Battery is a compact, reliable power source ideal for a wide range of RC vehicles and hobby electronics. Whether you're into RC cars, trucks, buggies or other RC models, this battery delivers consistent performance and impressive runtimes that make it perfect for everyday bashing, trail driving, or casual RC use. Designed for UK RC enthusiasts who demand reliability without breaking the bank, this battery offers an excellent balance between power output, durability, and convenience that appeals to both beginners discovering the RC hobby and experienced pilots looking for a dependable backup power source.

Featuring the popular SM2.5 connector in Polarity Option 2 configuration, this battery is ready to plug in and power your compatible RC model straight out of the box. The lightweight Li-Ion chemistry offers efficient energy delivery and exceptionally low self-discharge characteristics, meaning your battery retains its charge far longer than older NiMH alternatives. This makes it ideal if you're the type of RC enthusiast who likes to keep spare batteries charged and ready for weekend sessions at the track or your local RC bash spot. Whether you're running a ready-to-run RC truck, buggy or specialist RC vehicle, the Voltz 7.4V 1500mAh battery provides the power and reliability you need to maximise your hobby time.

RC hobbyists throughout the UK trust Voltz batteries for their consistent performance, safety and value. This 7.4V pack is no exception, delivering the kind of dependable performance that has made Voltz a recognised name in the RC community. At just 96 grams and with compact dimensions of 73 x 37 x 19mm, this battery fits into tight spaces in modern RC designs while still packing enough capacity for extended run times. The 11.1 Watt Hour rating ensures adequate power for various RC applications, making this a versatile choice for your RC fleet.

Key Features

• 7.4V Nominal Voltage — This two-cell Li-Ion configuration delivers the voltage needed for a wide range of RC applications including small scale RC buggies, RC crawlers, RC trucks and RC hobby electronics, making it a versatile power solution for multiple models in your RC collection.
• 1500mAh Capacity — The 1500mAh capacity provides sufficient energy storage for extended run times during casual RC sessions, allowing you to enjoy longer play periods without constantly returning to the charger, which is particularly valuable for RC enthusiasts who like to maximise their hobby time.
• SM2.5 Connector (Polarity Option 2) — This industry-standard connector type ensures compatibility with a broad range of RC vehicles and electronics, though it's important to verify your specific model's wiring configuration before first use, as SM connector pinouts can vary between manufacturers.
• XH Balance Connector — The integrated XH balance connector allows for safe, balanced charging using compatible RC battery chargers, ensuring optimal cell balance and extending the overall lifespan of your battery pack through intelligent charging protocols.
• Li-Ion Chemistry — Modern Li-Ion technology delivers superior energy density compared to older battery chemistries, providing better performance characteristics and significantly lower self-discharge rates so your battery stays charged longer when stored between RC sessions.
• Low Self-Discharge — Unlike traditional NiMH batteries commonly found in budget RC models, Li-Ion chemistry means your battery retains its charge for weeks or even months, making it perfect for occasional RC pilots or as a reliable backup battery for your RC collection.
• Compact and Lightweight Design — At just 96 grams and measuring only 73 x 37 x 19mm (including connector wires), this battery fits easily into the tight battery compartments of modern RC designs without adding excessive weight that would compromise your model's performance or handling characteristics.
• 11.1 Watt Hour Rating — This specification indicates the total energy capacity of the pack, with 11.1Wh providing a good balance between run time and weight, suitable for RC vehicles designed for casual recreational use rather than competition racing.

Technical Performance

The Voltz 7.4V 1500mAh Li-Ion battery represents a significant step forward in RC power technology compared to older NiMH alternatives commonly found in entry-level RC cars and trucks. The dual-cell Li-Ion configuration delivers a nominal voltage of 7.4 volts, perfect for RC electronics designed around 2S LiPo specifications, making this battery compatible with a huge range of existing RC models throughout the UK market. The 1500mAh capacity, combined with the efficient Li-Ion chemistry, translates to excellent run times for casual RC use, whether you're piloting an RC buggy across fields, crawling rocks with an RC crawler, or bashing around with an RC truck. The battery's engineering emphasises reliability and safety — the XH balance connector allows your RC charger to monitor individual cell voltages during charging, preventing overcharge conditions that could damage the battery or create safety hazards. At 11.1 Watt Hours total capacity, this pack delivers consistent power output throughout the discharge cycle, meaning your RC vehicle maintains responsive performance from the first second of driving until the battery is nearly depleted. The compact dimensions of 73 x 37 x 19mm (with wires) and lightweight 96-gram construction ensure this battery integrates seamlessly into modern RC designs without creating weight distribution problems. Li-Ion technology offers dramatically lower self-discharge compared to NiMH batteries, meaning your RC battery stays ready for action even if you haven't charged it for several weeks, making it an excellent choice for UK RC enthusiasts who don't get out to drive every weekend.

What's in the Box

• Voltz 7.4V 1500mAh Li-Ion Battery Pack
• SM2.5 Connector (Polarity Option 2)
• XH Balance Connector

What You Need to Complete

• RC Vehicle or device compatible with 7.4V power input and SM2.5 connector configuration
• Suitable RC battery charger capable of charging 2-cell Li-Ion packs with XH balance connector support

Frequently Asked Questions

• Is the Voltz 7.4V 1500mAh battery suitable for beginners to RC? — Yes, absolutely. This battery is an excellent choice for RC beginners and casual hobbyists. It's straightforward to use, doesn't require the complex management that some advanced batteries demand, and the low self-discharge means you can charge it once and keep it ready for whenever you want to enjoy your RC vehicle. Simply ensure your model's connector and polarity match before first use.
• What's the difference between Li-Ion and NiMH RC batteries? — Li-Ion batteries like the Voltz 7.4V pack offer significantly better performance than older NiMH technology. Li-Ion provides higher energy density (meaning more power in a smaller, lighter package), much lower self-discharge (your battery stays charged for weeks rather than days), better voltage stability during use, and longer overall lifespan. NiMH batteries gradually lose charge even when not in use, whereas this Li-Ion pack retains its charge for extended periods, making it far more convenient for RC enthusiasts who drive occasionally.
• How do I know if this battery is compatible with my RC vehicle? — The critical factor is the SM2.5 connector configuration. This battery features Polarity Option 2, which refers to the specific pin arrangement of the SM2.5 connector. Because SM2.5 connectors can be wired differently by various manufacturers, it's essential you check your model's existing battery or documentation to confirm the polarity matches. The product connector image will help you verify compatibility before use. Additionally, your RC vehicle needs to be designed for 7.4V power input (typically 2S LiPo compatible devices).
• What is the runtime on a single charge? — Runtime varies considerably depending on your RC vehicle's motor, weight, driving style, and terrain. The 1500mAh capacity generally provides 20-40 minutes of typical recreational RC use, though gentle cruising might extend this to 45+ minutes, while aggressive bashing and high-speed driving will reduce runtime. We recommend keeping multiple batteries charged so you can continue your RC sessions without waiting for recharge cycles.
• Can I use this battery in any RC model? — Not every model — compatibility depends on three factors: voltage (your RC vehicle must be designed for 7.4V operation), connector type (it must accept SM2.5 connectors), and polarity (the specific wiring configuration must match). Always verify compatibility before purchase. Most modern small-scale RC cars, trucks, and buggies designed for LiPo batteries will work, but older RC models or those designed for NiMH might not be compatible.
• How long does the battery last before needing replacement? — Li-Ion batteries typically provide 300-500 charge cycles before capacity noticeably diminishes. With proper care — avoiding complete discharge, storing in a cool environment, and using a compatible charger — this Voltz 7.4V battery should provide many seasons of reliable RC use. Most RC enthusiasts find they upgrade or replace batteries well before they reach end-of-life due to wanting to try new capacities or specifications.
• Is this battery waterproof? — The battery pack itself has some environmental resistance, but for best longevity and safety, avoid submerging it or exposing connectors to water. If your RC vehicle is waterproof and you've been driving through water, allow the battery to dry completely before charging. Always disconnect the battery from your RC vehicle when not in use and store in a dry location.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the VOLTZ LI-ION 7.4V 1500MAH BATTERY WITH SM2.5 CONNECTOR ABSIMA - POLARITY OPTION 2 VZL21500SM2 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.