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Extension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug Works for Electric Bicycle Light/Throttle/Ebrake/Display Extend Cable (3pin 50cm)
baluoqi

baluoqi Extension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug Works

Bottom line: The Extension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug: 3-pin 50cm variant listed alongside 2 through 9-pin options in 50/80/150cm; main trade-off: pin counts are not cross-compatible; ordering the wrong one makes it useless.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ 3-pin 50cm variant listed alongside 2 through 9-pin options in 50/80/150cm
  • ✓ IP65-rated waterproof connector housings for exposed downtube and fork routing
  • ✓ Pure copper conductors with gold-plated contacts for stable low-voltage signal
  • ✓ Female-to-male passthrough means no cutting, stripping, or soldering the stock harness

Cons

  • ✗ Pin counts are not cross-compatible; ordering the wrong one makes it useless
  • ✗ 50cm is the shortest option, which can leave slack to manage on short runs
  • ✗ IP65 resists spray but is not rated for submersion or pressure washing
  • ✗ Each connector pair adds two more contact points that can corrode over time

Manufacturer description

This baluoqi extension cable solves the most common wiring headache in an ebike conversion or repair: a connector that lands 20cm short of where it needs to be. It runs female-to-male with a waterproof plug on each end, so you splice nothing and cut nothing. The listing covers 2-pin through 9-pin variants in 50cm, 80cm, and 150cm lengths (connectors included), letting you match the exact pin count already on your throttle, motor, brake lever, brake sensor, gear sensor, or display. This configuration is the 3-pin, 50cm version. The conductors are pure copper with gold-plated contacts, and the…

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SpecPicks Verdict

SpecPicks scored Extension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. baluoqi's power supplies & cables lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will this fit my ebike's throttle connector?

It depends on your pin count. The listing covers 2, 3, 4, 5, 6, 8, and 9-pin versions; this one is 3-pin. Count the pins on your existing connector and match the variant before ordering, since the plugs are not cross-compatible between pin counts.

How long is the 3-pin version?

This variant is 50cm, measured including the connectors. The same cable is also offered in 80cm and 150cm if you need a longer run.

Can I leave it exposed to rain?

The connectors are rated IP65, which covers rain, road spray, and hose-level water. That is adequate for external frame routing, but it is not a submersion rating, so avoid pressure washing directly at the plugs.

What can I use this to extend?

The manufacturer lists throttle, electric bike motor, brakes, brake sensors, gear sensor, and display cables. Any of those with a matching 3-pin waterproof plug will work as a straight passthrough.

Is it good enough quality for the price?

It uses pure copper wire with gold-plated contacts. For warranty or return terms, check the current product listing.

Key Features

  • Wire Model: 2pin/3pin/4pin/5pin/6pin/8Pin/9Pin extension cable
  • Connection: 2/3/4/5/6/8/9 Pin plug, Female to Male
  • Length: 50cm/80cm/150cm (including connectors) ; waterproof connector
  • Universal Compatiblity: Extend your throttle, electric bike motor, brakes, brake sensors,gear sensor and display cable
  • High Quality Materials: IP65 waterproof ebike cable, made of high-quality raw materials, pure copper and gold contact, durable and stable signal.

Full Specifications

Brandbaluoqi
Color3pin Female to Male
Model3PFM
Cable TypeCustom
Unit Count1 Count
Length50cm/80cm/150cm (including connectors) ; waterproof connector
Item Length50 centimeters
Part Number3P F-M 50cm 2pcs
Connector TypeXLR
Number of Pins3
Connection2/3/4/5/6/8/9 Pin plug, Female to Male
Wire Model2pin/3pin/4pin/5pin/6pin/8Pin/9Pin extension cable
Maximum Current3 A
Maximum Voltage220 volts_of_alternating_current
Number of Items2
Special FeatureWaterproof
Connector GenderMale-to-Female
Specification MetIEC, RoHS
Compatible DevicesElectric Bicycle Brake, Electric Bicycle Display, Electric Bicycle Light, Electric Bicycle Throttle
Indoor Outdoor UsageOutdoor
Full listing titleExtension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug Works for Electric Bicycle Light/Throttle/Ebrake/Display Extend Cable (3pin 50cm)

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Extension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug Works for Electric Bicycle Light/Throttle/Ebrake/Display Extend Cable (3pin 50cm) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Extension Cable 2Pin/3Pin/4Pin/5Pin/6Pin/8Pin/9Pin Waterproof Plug Works for Electric Bicycle Light/Throttle/Ebrake/Display Extend Cable (3pin 50cm)
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