Overview
The Spektrum IC3 Battery Parallel Y-Harness is an essential charging accessory for RC enthusiasts who need to charge multiple LiPo batteries simultaneously. This 6-inch (150mm) Y-harness connector allows you to connect two IC3-compatible batteries in parallel, enabling efficient dual-battery charging setups on compatible chargers. Whether you're a seasoned RC car UK hobbyist running multiple vehicles or simply looking to maximise your charging efficiency, this harness provides a reliable and professional solution for managing your battery fleet.
Designed and manufactured by Spektrum, a recognised leader in RC radio systems and charging accessories, this parallel Y-harness represents genuine, quality engineering that RC enthusiasts have trusted for years. The 13 AWG wire gauge ensures safe current distribution across both battery connections, whilst the industry-standard IC3 connector provides secure, reliable contact every single time you use it. For anyone operating brushless RC cars, electric RC trucks, or any other IC3-equipped models, having a dedicated parallel harness eliminates the need for multiple chargers and streamlines your pre-race or weekend bashing routine.
This accessory is particularly valuable for competitive RC racers and serious hobbyists who rotate through several ready to run RC vehicles or who maintain backup batteries for extended play sessions. The 6-inch wire length provides optimal reach and flexibility when arranging batteries on your charging bench, and the parallel configuration means both batteries charge at identical rates without requiring manual intervention.
Key Features
- IC3 Connector Type — Both the main lead and the two branch connectors use the industry-standard IC3 connector, ensuring perfect compatibility with Spektrum batteries and any charger equipped with IC3 input ports, eliminating the frustration of incompatible connectors.
- 6-Inch Wires with 150mm Length — The generous 6-inch (150mm) cable length provides excellent flexibility when positioning your batteries on the charging bench, allowing you to arrange multiple setups without cramping or needing multiple harnesses daisy-chained together.
- 13 AWG Wire Gauge — Heavy-gauge 13 AWG copper wiring safely handles the current requirements of parallel charging without excessive voltage drop, voltage sag, or heat generation, protecting your batteries and ensuring optimal charging performance.
- Parallel Configuration — The Y-harness design allows two batteries to charge in true parallel, meaning both batteries receive identical voltage and charge at matched rates, eliminating the guesswork and manual balancing required with series configurations.
- Professional Grade Construction — Built to Spektrum's exacting standards, this harness uses quality connectors and insulation to deliver years of reliable service on your RC charging bench, whether you're charging LiPo batteries for electric RC buggies, RC crawlers, or any other IC3-equipped model.
- Compact and Portable — Lightweight and easy to store, this harness occupies minimal space in your pit kit, field box, or garage workbench, making it convenient to transport between racing events, club meetings, or casual weekend RC sessions.
Technical Performance
The Spektrum IC3 Battery Parallel Y-Harness represents thoughtful engineering for the serious RC hobbyist. The 13 AWG conductor size has been carefully selected to safely carry the current loads typical of parallel LiPo battery charging without creating voltage drop across the harness itself. This ensures that your charger's voltage regulation circuit receives accurate feedback from your batteries, allowing precise charge termination and protection against overcharging. The IC3 connector specification ensures that this harness works seamlessly with any Spektrum charger featuring IC3 input, as well as with most third-party chargers equipped with IC3 sockets. The 6-inch length strikes the perfect balance between having enough cable to arrange batteries conveniently on your workbench whilst remaining compact enough to avoid excessive wire coiling or clutter. The parallel topology means you can charge two batteries in one operation, halving your charging time compared to charging sequentially, which is invaluable when you're running multiple vehicles or maintaining a rotating battery roster for extended play sessions. The robust connector design ensures positive contact every time, eliminating intermittent charging issues caused by loose or degraded connections. Whether you're maintaining a fleet of brushless RC cars, electric RC trucks, or any other hobby-grade RC model using IC3 batteries, this harness delivers the reliability and performance demanded by serious RC enthusiasts across the UK and beyond.
What's in the Box
- 1x Spektrum IC3 Battery Parallel Y-Harness (6-inch / 150mm length, 13 AWG wire gauge)
Frequently Asked Questions
- What does a parallel Y-harness do and why do I need one? — A parallel Y-harness allows you to connect two batteries to a single charger input simultaneously, with both batteries receiving identical charging voltage. This cuts your charging time in half compared to charging batteries sequentially, making it essential if you operate multiple RC vehicles or maintain backup batteries for extended play sessions without waiting for recharge cycles.
- Is this harness compatible with my Spektrum charger? — Yes, this harness is fully compatible with any Spektrum charger featuring an IC3 input connector. It is also compatible with most third-party chargers that include IC3 sockets, making it a versatile addition to your charging setup regardless of which charger you currently own.
- What is the 13 AWG specification and does it matter? — AWG (American Wire Gauge) measures conductor thickness; 13 AWG is heavy-gauge copper wire specifically selected for parallel charging applications. This gauge safely handles the current flowing from your charger to two batteries without excessive resistance, voltage drop, or heat generation, protecting both your batteries and your charger.
- Will this harness work with my brushless RC car or truck? — This harness is designed for any IC3-equipped battery, which includes countless electric RC vehicles including brushless RC cars, trucks, buggies, crawlers and other models. If your model uses IC3 connectors on its batteries, this harness will work perfectly for charging applications.
- Can I charge batteries of different capacities at the same time? — The parallel configuration means both batteries receive identical voltage; however, they may charge at slightly different rates depending on their capacity and state of charge. Most modern Spektrum chargers include features to monitor each battery independently and terminate charging appropriately when each battery reaches full charge.
- Is this suitable for beginners? — Absolutely. This harness is straightforward to use—simply connect it to your charger's IC3 input and attach two IC3 batteries to the parallel connectors. There are no complicated settings or procedures; it simplifies the charging process for anyone running multiple RC vehicles.
- How does parallel charging compare to charging batteries one at a time? — Parallel charging allows you to charge two batteries in one operation, which is significantly faster than sequential charging if you own multiple RC vehicles or like to maintain backup batteries. For weekend RC hobbyists and serious competitors alike, parallel charging saves valuable time at the track or the field.
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 SPM IC3 Battery Parallel Y-Harness 6" / 150mm; 13 AWG O-SPMXCA307 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.
