This page includes affiliate links. If you buy through them, RC Tech Tips may earn a commission at no extra cost to you. Connector recommendations still need to fit your vehicle, battery, charger, polarity, and soldering skill before they make sense.
Quick Answer: What RC Battery Connector Do You Have?
Most RC cars use Traxxas, Spektrum IC3/IC5, EC3/EC5, XT60/XT90, Deans/T-plug, Tamiya, or JST-style connectors. Match the plug on the vehicle, battery, and charger before buying anything. Do not rely on color alone. Check connector shape, male/female side, polarity, wire gauge, and whether the connector is meant for a high-current drive pack or a small accessory battery.
| Connector type | Common use | How to recognize it | Buying risk |
|---|---|---|---|
| Traxxas/iD | Traxxas vehicles, batteries, and chargers | Proprietary Traxxas housing, often with iD ecosystem support on newer packs and chargers | Check iD vs older high-current style, pack side vs ESC side, and charger compatibility |
| Spektrum IC3/IC5 | Spektrum, Horizon, and many ARRMA battery setups | Blue IC housing with size-specific IC3 or IC5 shape | IC3 and IC5 are not the same size; adapter direction matters |
| EC3/EC5 | Older Horizon-style packs and chargers | Blue bullet-style EC housing without the same Smart data-wire design | Some IC/EC pairings are compatible, but verify direction and fit first |
| XT60/XT90 | Aftermarket LiPo packs, chargers, and hobby electronics | Yellow XT housing, with XT90 larger than XT60 | Poor solder joints, wrong wire gauge, or copied plugs can create heat and failure points |
| Deans/T-plug | Older RC packs, budget vehicles, and aftermarket electronics | Flat red T-shaped plug | Quality varies, and the compact solder tabs are easy to overheat |
| Tamiya | Older NiMH packs, entry-level kits, and some toy-grade gear | White plastic rectangular plug | Usually not the best path for high-current modern brushless setups |
| JST | Small RC batteries, micro vehicles, fans, lights, and accessories | Small red or white low-current pigtails depending on JST variant | JST variants and polarity vary; do not use tiny JST leads for a 1/10 drive pack |
Connector Options To Compare
Use these links as connector search paths, not as blind buy buttons. Before buying, compare the listing photos to the plug on your car, battery, and charger. If you are not sure which side you need, stop and identify the pack side and device side first.
Connector and adapter links
XT60 connector kit
Ledvillage 62pcs T-Plug / XT30 / XT60 / EC3 Male & Female Plug Adapter Connectors Kit 14 AWG Silicone Wire and Heat Shrink Tubing for RC Lipo Battery Accessories ESC Motor
Best for: readers standardizing aftermarket batteries ESC leads or charger leads around XT60
Avoid if: readers who have not checked male/female sides or soldering requirements
Verify male/female sides, heat shrink, wire gauge, solder cup size, and housing style before buying.
Buy on Amazon
Spektrum IC adapter option
Spektrum Adapter, 6": IC3 Battery/IC2 Device, SPMXCA320, 1 Count (Pack of 1)
Best for: readers solving a Spektrum IC3 or IC5 battery/device mismatch
Avoid if: readers who are unsure which side or IC size they need
Verify IC3 vs IC5 size, battery side vs device side, EC compatibility, and adapter direction before buying.
Buy on Amazon
Second Spektrum IC adapter option
Spektrum Adapter: IC3 Battery/JST-RCY Device, SPMXCA310
Best for: readers comparing the opposite IC adapter direction or another IC size
Avoid if: readers who have not identified charger side and battery side
Verify adapter direction, connector size, wire rating, and whether it solves the actual charger or ESC mismatch.
Buy on Amazon
Traxxas-style connector pigtails
DEVMO 2 Pairs TR-X Male/Female Connectors Cable with 14awg 10cm Slicone Wire Compatible with RC LiPo Battery FPV Turnigy/Zippy
Best for: readers needing a Traxxas-style repair or conversion lead
Avoid if: readers who require official-only Traxxas parts without verifying the listing
This resolved to a compatible connector listing; verify official vs compatible status, wire gauge, male/female side, and soldering requirement.
Buy on Amazon
Traxxas connector listing
Traxxas® Connector 4s (Male) (2) - for ESC USE ONLY
Best for: Traxxas owners matching a battery charger or ESC connector path
Avoid if: readers who have not checked iD vs non-iD style or connector side
Verify iD vs non-iD style, pack/device side, quantity, and compatibility with the charger or ESC.
Buy on Amazon
Deans T-plug connector kit
5 Pairs T Plug Connector Female and Male Deans with 14AWG Silicon Wire for RC Lipo Battery Cable Drone
Best for: readers already running Deans or T-plug batteries and electronics
Avoid if: readers starting fresh without comparing XT60 or vehicle-brand connector paths
Verify polarity marks, male/female pair count, heat shrink, wire gauge, and solder tab quality.
Buy on Amazon
JST splitter harness
6PCS JST Plug Splitter JST Male Female Y Cable JST Y Parallel Adapter Harness JST to JR Adapter for Traxxas TRX-4 RC Car Crawler Truck Cooling Fan ESC Battery Motor
Best for: readers wiring small accessories such as fans lights or crawler add-ons
Avoid if: readers trying to connect a main 1/10 drive pack
Use only for low-current accessory paths; verify JST variant, polarity, load, wire gauge, and whether a splitter is appropriate.
Buy on Amazon
JST pigtail set
elechawk 10pcs Upgraded Tiny Whoop JST-PH 2.0 Male and Female Connector Cable for Battery JJRC H36 H67 Blade Inductrix E010 E013
Best for: readers replacing tiny low-current pigtails for small RC batteries or micro electronics
Avoid if: readers wiring high-current main battery leads
Verify JST variant, polarity, wire gauge, pigtail length, and small-scale use only.
Buy on Amazon| Product role | Use when | Verify before buying |
|---|---|---|
| XT60 connector kit | You are standardizing aftermarket batteries, ESC leads, or charger leads around XT60. | Male/female pair count, heat shrink, wire gauge fit, solder cup size, and genuine-style housing. |
| Spektrum IC adapter option | You need a Spektrum Smart/IC adapter path for an IC3 or IC5 battery/device mismatch. | Exact IC3 vs IC5 size, battery side vs device side, and whether EC compatibility applies to your setup. |
| Second Spektrum IC adapter option | You are comparing the opposite IC adapter direction or a different IC size. | Part direction, connector size, wire rating, and whether it solves your actual charger or ESC mismatch. |
| Traxxas-compatible connector pigtails | You need a Traxxas-style connector repair or conversion lead and understand it may not be an official Traxxas listing. | Official vs compatible listing, wire gauge, male/female side, and whether soldering is required. |
| Traxxas connector listing | You want a cleaner Traxxas connector path for a Traxxas vehicle, battery, or charger lead. | iD vs non-iD style, pack/device side, quantity, and compatibility with your charger or ESC. |
| Deans/T-plug kit | You already run Deans/T-plug batteries or electronics and need matching spare plugs. | Polarity marks, male/female pair count, heat shrink, wire gauge, and solder tab quality. |
| JST accessory splitter | You are wiring small accessories such as fans, lights, or low-current crawler add-ons. | JST variant, polarity, load, wire gauge, and whether a splitter is appropriate. |
| JST pigtail set | You need tiny low-current pigtails for small RC batteries or micro electronics. | JST variant, polarity, wire gauge, pigtail length, and small-scale use only. |
Traxxas Connectors: Stay In The Ecosystem If You Can
Traxxas connectors make the most sense when your car, battery, and charger are already Traxxas. Newer Traxxas iD batteries and chargers are designed to simplify charging setup by combining the main connector and balance lead path, but that convenience depends on using the right compatible battery and charger. Traxxas explains the iD system on its iD technology page.
If you are only replacing a damaged connector, match the exact style and side before soldering. If you are converting a Traxxas vehicle to a different connector family, make sure the charger, batteries, ESC lead, and warranty implications still make sense.
Spektrum IC3, IC5, EC3, And EC5
Spektrum IC connectors are common on Horizon Hobby and ARRMA setups. IC3 and IC5 are different sizes, so the right answer is not just “Spektrum.” IC5 is generally used for larger, higher-current setups than IC3. EC3 and EC5 are related older connector families, and some IC/EC combinations can physically work when used in the correct direction, but you should still verify the exact battery side and device side before buying an adapter.
When a listing says IC3, IC5, EC3, or EC5, slow down and read the direction. A battery-to-device adapter is not automatically the same as a charger-to-battery adapter.
XT60 And XT90: Good Universal Paths, But Soldering Matters
XT60 is a common aftermarket LiPo connector because it is compact, keyed, and widely supported by packs, chargers, ESCs, and adapters. XT90 is the larger cousin for higher-current setups. The connector family is only part of the decision, though. A poor solder joint, too-small wire, missing heat shrink, or reversed polarity can ruin an otherwise good setup.
If you are not comfortable soldering battery leads, use a properly matched adapter or ask a hobby shop for help. Do not learn soldering for the first time on a charged LiPo battery lead.
Deans/T-Plug: Still Common, But Check Quality
Deans-style T-plugs still show up on older cars, budget electronics, and spare LiPo packs. They can work fine when the plug quality and soldering are good. The risk is that small solder tabs, copied connectors, and unclear polarity marks can make mistakes easier.
If your RC fleet already uses T-plugs, replacing like-for-like may be simplest. If you are starting fresh, compare whether XT60 or the connector family used by your vehicle brand would be easier to support long term.
JST Is For Small Loads, Not Main 1/10 Drive Packs
JST is a family name, not one single connector. Some small red JST-style pigtails are used for micro batteries, fans, lights, and accessories. Other tiny white plugs on micro batteries are different JST variants. The important point is current load. A small JST pigtail that is fine for an LED kit or micro battery is not the right connector for a high-current 1/10 scale brushless drive pack.
Before using a JST adapter or splitter, check the exact plug variant, polarity, wire gauge, and accessory load. If the wire looks much thinner than your main battery lead, treat it as a warning.
Adapter Vs Soldering: Which Is Safer?
| Situation | Better choice | Why |
|---|---|---|
| One battery has the wrong plug for one vehicle | Short, correctly rated adapter | Fastest low-risk fix if polarity, wire gauge, and connector direction are correct |
| You are converting several batteries and chargers | Standardize one connector family | Reduces adapter clutter, but only if you can solder safely or use a hobby shop |
| Connector is melted, loose, or intermittent | Replace the damaged connector | A flaky connector can create heat, voltage drop, and cutouts |
| You do not know the polarity | Stop and identify it first | Reverse polarity can damage electronics quickly |
| You are using LiPo packs for the first time | Learn charging and storage first | Read the LiPo charging setup guide before modifying leads |
Battery And Charger Fit Checklist
- Match the battery connector to the ESC or use a correctly rated adapter.
- Match the charger output lead to the battery connector and battery chemistry.
- For LiPo packs, use the correct balance lead and charge mode.
- Check whether your setup is 2S, 3S, or another cell count before buying batteries or chargers. The 2S vs 3S LiPo guide explains the difference.
- Keep wire gauge similar to the original lead for high-current battery connections.
- Make sure adapters are short, secure, and not warm after normal use.
- Do not leave exposed solder joints or missing heat shrink.
Common Connector Mistakes
- Buying the right connector family but the wrong side.
- Assuming every blue connector is the same Spektrum/EC size.
- Using a tiny JST accessory lead for a main battery connection.
- Adding a long chain of adapters instead of solving the actual connector mismatch.
- Changing the battery plug but forgetting the charger still needs to connect.
- Creating a good-looking solder joint that is actually cold or weak.
- Ignoring heat after a run. Warm connectors can mean resistance, poor fit, or too much load.
Helpful Next Steps
- New to RC batteries? Start with how to charge a LiPo battery for the first time.
- Choosing pack voltage? Read 2S vs 3S LiPo battery.
- Buying your first hobby-grade car? Use the beginner RC car buying guide.
- Working on a Slash? The Traxxas Slash upgrades guide shows where batteries and chargers fit into the upgrade path.
- If a Traxxas vehicle feels slow or cuts power, review Traxxas ESC modes and LiPo low-voltage detection.
RC Battery Connector FAQ
What Is The Most Common RC Battery Connector?
There is no single connector across all RC cars. Traxxas, Spektrum IC3/IC5, XT60, Deans/T-plug, Tamiya, and JST-style connectors are all common in different parts of the hobby.
Can I Use An Adapter Between My RC Battery And ESC?
Yes, if the adapter is the correct connector direction, polarity, wire gauge, and current rating for the vehicle. Avoid long adapter chains, loose plugs, or adapters that get warm during normal driving.
Are Spektrum IC Connectors Compatible With EC Connectors?
Some IC and EC connector pairings can work when the size and direction are correct, but you still need to verify IC3 vs IC5, EC3 vs EC5, battery side, device side, and any Smart battery features.
Is JST Safe For A 1/10 Scale RC Car Battery?
A tiny JST-style pigtail is not the right main connector for a high-current 1/10 scale drive battery. JST-style leads are usually for small batteries, fans, lights, or accessories, depending on the exact variant and wire gauge.
Should I Change All My RC Connectors To XT60?
Only if XT60 fits your vehicles, batteries, chargers, current needs, and soldering ability. Standardizing can make your setup simpler, but changing connectors creates risk if polarity, wire gauge, or soldering is wrong.
