Voltz Li-Ion 7.4V 1500mAh RC Battery SM2.5 Connector XH Balance VZL21500SM

Overview

The Voltz Li-Ion 7.4V 1500mAh Battery with SM2.5 connector is a compact, reliable power source ideal for a wide range of RC vehicles and hobby electronics. Whether you're a seasoned RC enthusiast running an RC car UK setup or new to the hobby, this 2S battery pack delivers consistent performance and impressive runtimes that strike an excellent balance between power output, durability, and convenience. The lightweight Li-Ion chemistry offers efficient energy delivery and low self-discharge characteristics, making it perfect for everyday bashing, trail driving, or casual RC use without the frustration of rapid battery drain when your model is sitting idle.

This ready to run battery solution is designed to power popular RC models including compatible Absima Storm and Thunder vehicles, though it will work with any model featuring an SM2.5 connector with matching polarity configuration. The 7.4V nominal voltage (2S configuration) provides plenty of punch for small to medium-sized RC cars, trucks, and buggies, whilst the 1500mAh capacity ensures you get extended play sessions before needing to recharge. For RC hobbyists in the UK looking for a dependable spare battery or upgrade, the Voltz range has earned a reputation for quality and value without compromising on performance or safety.

Key Features

• 7.4V Li-Ion Chemistry — This battery utilises lithium-ion technology rather than older NiMH alternatives, delivering superior energy density and more consistent voltage delivery throughout the discharge cycle, which translates to better acceleration and more predictable handling characteristics throughout your entire driving session.
• 1500mAh Capacity — The 1500mAh capacity provides a genuine balance between power output and weight, offering extended runtime for recreational driving without adding unnecessary bulk that could affect your RC model's weight distribution and performance.
• SM2.5 Main Connector — This industry-standard connector is widely used across RC vehicles and is robust enough for repeated plug-and-play connections without wear, though it's critical to verify polarity compatibility with your specific model before first use as SM connectors can vary between manufacturers.
• XH Balance Connector — The included XH balance connector allows you to use modern battery management systems and balancing chargers, which helps maintain individual cell health and extends the overall lifespan of your battery investment.
• Low Self-Discharge — Li-Ion technology means this battery holds its charge far better than traditional NiMH batteries, so you can leave your RC setup ready to go for weeks without coming back to a depleted pack.
• Compact Dimensions — At just 73 x 37 x 19mm and weighing only 96g, this battery fits into tight battery compartments common on small to medium RC vehicles whilst keeping weight distribution optimal for handling.
• 11.1 Wh Energy Rating — The watt-hour rating gives you a precise understanding of total energy storage, helping you choose between multiple batteries for longer sessions or backup power during events.

Technical Performance

The Voltz Li-Ion 7.4V 1500mAh battery represents modern battery technology in compact form. At 11.1 watt-hours of energy storage, this pack delivers sufficient power for extended RC driving sessions. The engineering focuses on reliability and consistent performance rather than extreme discharge rates, making it suitable for general-purpose RC use rather than high-performance racing applications. The 96g weight makes this an excellent choice for smaller RC models where every gram matters for agility and handling. The soft case construction protects the cells whilst remaining flexible enough to fit into battery bays without forcing or potential cell damage. The combination of SM2.5 main connector and XH balance lead means this battery integrates seamlessly with modern RC charging equipment, allowing you to monitor and balance individual cell voltage to maximise longevity. The Li-Ion chemistry provides approximately 500 full charge cycles under normal use conditions, and the low self-discharge rate means your RC setup stays charged and ready for action even during periods of storage. For RC enthusiasts in the UK seeking a dependable spare battery that won't break the budget, this Voltz pack delivers genuine value without compromise.

What's in the Box

• Voltz Li-Ion 7.4V 1500mAh Battery Pack
• SM2.5 Main Power Connector (Polarity Option 1)
• XH Balance Connector

Important Compatibility Information

Before using this battery, you must verify the connector polarity matches your RC model's wiring configuration. SM2.5 connectors can vary between manufacturers — some have different pin arrangements. Always refer to your model's manual or the product connector image provided to confirm correct polarity for your specific setup. Using an incorrectly polarised battery will damage your electronic speed controller (ESC) and potentially cause a fire hazard. If you're uncertain, contact us at RC Model Shop for assistance in identifying the correct battery variant for your model.

Frequently Asked Questions

• Is this Voltz Li-Ion battery suitable for my RC car UK setup? — Yes, provided your model uses an SM2.5 connector and requires 7.4V power (2S configuration). This battery works with small to medium-sized RC cars, trucks, and buggies. Always check your model's specifications and connector type before purchasing, as compatibility depends on both voltage requirements and connector type matching.
• What is the difference between Polarity Option 1 and Polarity Option 2? — The polarity options refer to which terminal (positive or negative) is on which pin of the SM2.5 connector. Different RC manufacturers wire their vehicles differently, so you must select the option matching your specific model's wiring. Using the wrong polarity will damage your speed controller, so this is not a feature you can ignore.
• How long does this battery last on a single charge? — Runtime depends on your RC model's motor efficiency and driving style. Generally, you can expect 20-45 minutes of moderate recreational driving from a single 1500mAh charge, though aggressive bashing will drain the battery faster. For extended sessions, purchasing multiple batteries is recommended.
• Can I use this battery with a modern RC charger? — Yes, the XH balance connector means this battery is compatible with virtually all contemporary RC chargers and battery management systems. The balance connector allows your charger to monitor individual cell voltage and charge them to the optimal level, maximising battery lifespan and safety.
• How often should I charge this battery? — After each use, or at minimum before storing your RC model for extended periods. Li-Ion batteries last longer and perform better when stored at partial charge (around 60-70% capacity) rather than fully charged or fully depleted. For maximum longevity, avoid leaving the battery fully charged for weeks at a time.
• Is this battery safe for beginners? — Yes, this is an excellent beginner battery. The 1500mAh capacity and moderate power output make it suitable for learning basic RC car control without the intimidation of extreme power, and the compact size keeps your model manageable for new drivers.
• What is the difference between Li-Ion and LiPo batteries? — Both are lithium-based, but Li-Ion cells have superior cycle life (around 500+ cycles versus 200-300 for LiPo) and slightly lower peak discharge rates, making them safer and more cost-effective for recreational use. LiPo batteries are preferred for racing where maximum power density is needed, but Li-Ion is better for everyday hobbyists.

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 - POLARITY OPTION 1 VZL21500SM 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.