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RC Battery Wire Gauge Chart: Best Pairing of Connector and Wire

RC Battery Wire Gauge Chart

This article provides a detailed wire gauge chart primarily used in RC hobbies, especially for wires connecting battery connectors. In addition to this chart, there is also an RC Battery Connector Chart. You can use these charts to achieve the optimal pairing of wires with battery connectors.

Due to the variation in materials used by different manufacturers, the following data may have some inaccuracies, but these errors are not significant. The data provided below are from Gens Ace and Tattu, which are authoritative sources and offer strong reference value.

RC Battery Wire Gauge Chart

AWGContinuous CurrentIROuter DiameterConductor Cross-Section AreaWeight
8AWG209.5A4.2 Ohm/km6.5mm8.29mm101.25g/meter
10AWG140.6A6.3 Ohm/km5.5mm5.3mm70.55g/meter
12AWG88.4A9.8 Ohm/km4.5mm3.4mm46.32g/meter
14AWG55.6A15.6 Ohm/km3.5mm2mm27.375g/meter
16AWG35A24.4 Ohm/km3mm1.27mm18.725g/meter
18AWG22A39.5 Ohm/km2.3mm0.75mm11.025g/meter
20AWG13.87A62.5 Ohm/km1.8mm0.5mm7.275g/meter
22AWG8.73A88.6 Ohm/km1.7mm0.33mm5.35g/meter
24AWG5A97.6 Ohm/km1.6mm0.2mm3.925g/meter
26AWG3.5A123 Ohm/km1.5mm0.15mm3.34g/meter
28AWG1.25A227.2 Ohm/km1.3mm0.08mm2.15g/meter
RC Battery Wire Gauge Chart
  • AWG (American Wire Gauge): A standard system used to denote the thickness of wire. The lower the number, the thicker the wire.
  • Continuous Current: The maximum current that the wire can carry continuously without overheating or degrading.
  • IR (Internal Resistance): Measured in Ohms per kilometer (Ohm/km), this indicates the resistance of the wire which affects how much energy is lost as heat.
  • Outer Diameter: The overall thickness of the wire including insulation.
  • Conductor Cross-Section Area: The area of the wire’s conductive material, usually in square millimeters (mm²), which correlates with the wire’s capacity to carry current.
  • Weight: The weight of the wire per meter, typically given in grams per meter (g/meter), which can be important for weight-sensitive applications like RC vehicles.

RC Battery Connector Chart

Connector (Plug)NameContinuous CurrentMax. CurrentMax. Wire Gauge
Micro Deans-T ConnectorMicro Deans-T10A15A20AWG
Deans-T ConnectorDeans-T40A60A10AWG
XT30 connectorXT3015A30A16AWG
XT60 connectorXT6040A70A12AWG
XT60H connectorXT60H30A60A12AWG
XT60U connectorXT60U30A60A12AWG
XT90 connectorXT9060A100A10AWG
XT150 ConnectorXT15080A120A8AWG
AS150 ConnectorAS150100A150A10AWG
QS8 connectorQS8110A500A8AWG
EC2 connectorEC220A30A14AWG
EC3 connectorEC330A50A12AWG
EC5 connectorEC570A110A10AWG
IC2 connectorIC220A30A14AWG
IC3 connectorIC330A50A12AWG
IC5 connectorIC570A110A10AWG
Traxxas connectorTRX (Traxxas)30A60A10AWG
Tamiya connectorTamiya40A60A12AWG
Tamiya Mini connectorTamiya Mini10A30A14AWG
PH2.0 connectorPH2.0 (JST-PHR-2P)3A4A18AWG
JST connectorJST-SYP3A4A18AWG
GNB27 connectorGNB279A15A18AWG
A30 connectorA309A15A20AWG
BT2.0 connectorBT2.09A15A22AWG
Molex connectorMolex (Molex-51005-2P)2A3A22AWG
Banana 2.0mm connectorBanana (2.0mm)10A20A18AWG
Banana 4.0mm connectorBanana (4.0mm)30A45A12AWG
RC Battery Connector Chart
  • Connector (Plug): This column lists the types of connectors, which are used to join electric circuits together, specifically for RC batteries.
  • Continuous Current: This is the maximum current that the connector can handle for an extended period without overheating or failing.
  • Max. Current: This refers to the maximum peak current that the connector can handle for a short duration without damage.
  • Max. Wire Gauge: This indicates the largest diameter of wire that can be used with the connector in American Wire Gauge (AWG) terms.

How can the Best Combination of Wires, and Connectors be Achieved?

It depends on your actual current requirements. The formula for calculating this is:

Rated Current (A)=Capacity (Ah)×C-rating

The peak current usually is twice the rated current.

However, the mAh (milliamp-hour) and C-rating of LiPo batteries in the market are sometimes exaggerated, and the degree of this exaggeration varies among manufacturers. This makes determining the true rated and peak currents of these batteries more challenging. But you can use battery testers or dischargers to check the real capacity and C-rate: Specialized equipment can be used to test the actual discharge capabilities of batteries. These devices can measure the capacity and maximum discharge rate of the batteries through actual discharge tests.

Besides, opting for batteries from well-known brands is usually more reliable. These brands are more likely to provide accurate specifications as they need to maintain their reputation. If you want to save time in the process of finding the best battery for your RC models, as well as avoid buying an inferior battery, then you can use our Battery Finder, which will recommend the best battery for you.

About JST and Molex Series Connectors

There are many JST series connectors, often referred to simply as JST connectors. For example, the full name of the balanced connector for Lipo 3S batteries is JST-XHR-4P. Similarly, the Molex family of connectors is often referred to simply as Molex connectors.

In the JST-XHR-4P connector nomenclature, “XHR” is the series name of the connector, and “4P” stands for 4 pins, indicating that the connector has four conductive pins. Therefore, a JST-XHR-4P is a model from the JST-XH series with four pins and is typically used for balancing charging leads on battery packs. These connectors are often found on the balance charging interface of batteries, where each pin connects to a cell within the battery pack to ensure equal voltage across the cells during charging.

What is the Anti-spark Connector?

QS8 and XT150 anti-spark connectors versions are specially designed to handle high currents while minimizing electrical sparking during connection and disconnection. These connectors are crucial for high-power systems, as the rapid change in current when plugging or unplugging connectors can create sparks at the contact points, which may lead to equipment damage and even safety hazards.

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