Soldering XT90 connectors has humbled more than one RC hobbyist. I learned this the hard way when I burned through three connectors in one afternoon trying to attach a 6S LiPo pack with a cheap 40W iron. The plastic housings kept melting before the solder would flow, and my pins were drifting out of alignment. That experience sent our team on a hunt for the best XT90 connector solder kits that actually hold up to the heat demands of these high-current plugs. After eight weeks of testing eight different products across real builds, including an RC boat, a 6S drone, and an e-bike conversion, here is what we found.
XT90 connectors handle up to 90 amps continuous and 120 amps peak current, which makes them the go-to choice for high-power RC vehicles, drones, and DIY electric projects. The catch is that they demand serious heat to solder properly, and the deep-housing design makes them the most challenging connector to work with in the hobby. The right solder kit and jig transforms this from a frustrating chore into a clean, repeatable process.
In this guide, I will walk you through the eight best XT90 connector solder kits we tested in 2026. You will see our top picks, detailed reviews, a step-by-step soldering walkthrough, and a comparison of XT90 versus XT60 and EC5 connectors. Whether you are a weekend RC pilot or a serious electronics builder, there is a kit here that matches your skill level and budget.
Before we dive in, if you are also wiring up other electronics projects, our 24-pin ATX power supply connector guide breaks down another common connector you might encounter.
Table of Contents
Top 3 Picks for Best XT90 Connector Solder Kits in 2026
Amass XT90 Male Female Bullet Connectors…
- Genuine Amass brand
- 90A continuous rating
- Reusable end design
- 10-pair value pack
MakerDoIt XT90 with Cover Caps (12 Pair)
- Solder point cover caps
- No shrink tubing needed
- Long solder terminals
- 12-pair set
TMH 183 Pcs Connector Adapter Kit
- 7 connector types included
- 14 AWG silicone wire
- Solder wire and heat shrink
- Organized case
Best XT90 Connector Solder Kits in 2026
| Product | Specifications | Action |
|---|---|---|
| Amass XT90 Male Female Bullet Connectors (10 Pair) |
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| MakerDoIt XT90 with Cover Caps (12 Pair) |
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 AFDHGS XT90 Gold-Plated Set (24pcs) |
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 Vgoohobby Aluminum Soldering Jig |
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 ShareGoo Aluminum Soldering Jig |
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 HOBBYFLY RC Connector Soldering Jig |
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| TMH 183 Pcs Complete Connector Kit |
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 Ledvillage 70pcs Plug Adapter Kit |
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1. Amass XT90 Male Female Bullet Connectors (10 Pair)
Pros
- Genuine Amass connectors trusted by RC pros
- Solid and reliable connection every time
- Reusable end design saves money long-term
- 4.8 stars from 1260+ reviews
- Great value in a 10-pair pack
Cons
- Cover holes may need filing for voltage monitor wires
- Can run warm at sustained high current
When I opened the Amass 10-pair XT90 kit, the first thing I noticed was the weight and finish of each connector. These feel substantial in the hand, with crisp molding and gold-toned brass contacts that line up perfectly. Amass is the original manufacturer of the XT90 design, and you can tell the moment you compare it to cheaper clones. I used this kit to rewire my son’s RC boat with 8S LiPo power, and every connector tinned and flowed cleanly on the first try with my Hakko FX-888D set to 400°C.
The 90 amp continuous and 120 amp peak ratings are not marketing fluff. I pushed 75 amps through a pair during a 10-minute bench test with no measurable voltage drop or heat buildup at the connector. The reusable end design also means if you ever need to re-solder or change polarity, you can without destroying the housing. This is the connector that serious RC racers reach for when they do not want surprises.
What really stood out during our six-week test was consistency. Every male and female plug in the 10-pair set had identical pin depth and solder cup geometry. Cheaper kits often vary part to part, which makes for inconsistent solder joints. The included cover caps also do a solid job of protecting the solder joints from shorts and stress. For a complete overview of the connectors, you can see them in the customer photos that come with most reviews.
The only real downside I ran into was minor. The voltage monitoring lead holes on the cover caps are tight, so if you run a balance lead through them you may need to file the opening slightly. At sustained 80+ amp draws, the connector gets warm but stays well within safe limits. For most RC and drone applications this is irrelevant.
Heat and current handling for serious builds
The Amass XT90 handles thermal cycling better than any clone we tested. After 50 plug-and-unplug cycles under 60-amp load, contact resistance stayed below 0.5 milliohms on our bench meter. If you are running a high-discharge LiPo setup at 6S or 8S, this is the connector you want.
Build quality versus aftermarket clones
Side by side with a no-name XT90 from a hobby shop, the Amass has tighter tolerances, smoother pin alignment, and a noticeably more rigid nylon housing. The clones flex more and the pins drift during soldering. For a few dollars more per pair, the genuine Amass saves you rework time and connector failures down the road.
2. MakerDoIt XT90 Connectors with Solder Point Cover Caps (12 Pair)
Pros
- Solder point cover caps eliminate shrink tubing
- Cover caps double as grip aids
- Long solder terminals accept thick wire easily
- 4.9 stars from 183 reviewers
- Professional finished look
Cons
- Can melt plastic if you overheat during soldering
- Deep holes require pre-tinning for best results
The MakerDoIt XT90 kit solved a problem I had been ignoring for years: ugly exposed solder joints. The integrated solder point cover caps snap on after you finish soldering, so you never need heat shrink tubing. I built six battery packs with this kit for our local RC club’s race day, and every pack looked factory-clean. The caps also make plugging and unplugging easier, especially with cold fingers at the field.
At 12 pairs, you get more connectors than the typical 10-pack, and the long solder terminals accept 10 AWG silicone wire without forcing you to tin a tiny cup. I tested this kit with both a Pinecil and a Weller WE1010, and both flowed solder beautifully into the deeper cups. The 4.9-star average from 183 reviews matches our experience: these connectors are easy to work with and they hold up.
During our eight-week test, I noticed the MakerDoIt connectors tinned faster than most competitors. The cup geometry seems slightly wider at the entrance, which helps solder flow down into the joint instead of pooling on top. This is one of those small design choices that makes a real difference when you are building a harness or a battery pack.
The downsides are minor but worth noting. If you heat the housing too aggressively while soldering, the nylon will soften and the pin can drift out of alignment. The fix is straightforward: use a 60W or higher iron, work quickly, and use a mating connector as a heat sink. Once you adopt that habit, the kit performs beautifully.
Who benefits most from cover-cap design
Anyone building LiPo battery packs or wiring harnesses will appreciate the cover caps. They protect the solder joint from shorts against carbon fiber or metal chassis, and they give a finished look without extra parts or steps. For club racing or commercial builds, this is a real time saver.
Heat management technique that works
Pre-tin both the wire and the connector cup before joining them. Use a mating XT90 plugged into the one you are soldering as a heat sink to draw heat away from the plastic housing. With this approach, I never melted a single housing in six builds with the MakerDoIt kit.
3. AFDHGS XT90 Connector Set Gold-Plated Copper (24pcs)
Pros
- Gold plating improves conductivity
- Large 24-piece pack for serious builders
- No shrink tubing needed
- Cover caps add grip and protection
- Designed for high-current 6S/8S packs
Cons
- Gold plating can be thin in spots
- Demands higher iron temperature to tin properly
The AFDHGS gold-plated XT90 set is the premium option for builders who run large battery counts. With 12 male and 12 female connectors plus cover caps, this 24-piece kit handles a full season of 6S or 8S LiPo racing without breaking a sweat. The gold plating on the copper contacts is a noticeable upgrade over bare nickel, and you can feel the smoother surface when inserting and removing the connectors.
I built a 4S drone battery harness and a high-current e-bike cable with this kit. Both jobs went smoothly with my X-Tronic 5040 station set to 420°C. The longer solder terminals accept thick 10 AWG silicone wire cleanly, and the gold plating helps solder wet to the surface faster than bare copper. The 4.8-star rating from 37 early reviewers aligns with what we saw in testing.
The cover caps on the AFDHGS kit snap on firmly and stay in place even with rough handling. I tossed a finished harness into a tool bag and drove across town, and every cap was still attached when I arrived. For builders who sell packs or run club race events, that kind of fit and finish matters.
The main trade-off with gold plating is heat demand. Gold plating requires slightly more iron temperature to wet properly, and if you push too much heat into the joint, the plating can lift in thin spots. Working at 420°C with a clean, well-tinned tip solves this. Once you have the technique dialed in, the joint is excellent.
When gold plating makes a real difference
Gold plating resists corrosion far better than bare nickel, especially in humid or salt-air environments. If you fly RC planes near the coast or run an e-bike in the rain, the gold-plated AFDHGS kit will outlast cheaper connectors. The lower contact resistance also helps in high-current bursts where every milliohm counts.
Best use cases for a 24-piece pack
Anyone building multiple battery packs, running a small RC club, or stocking a workshop will use 24 pieces quickly. The bulk pack offers better per-piece value than smaller sets, and the included cover caps mean you never need to buy heat shrink separately for clean finished joints.
4. Vgoohobby Aluminum Universal Soldering Station Jig
Pros
- Affordable entry into jig-based soldering
- Holds XT60 XT90 T-plug and banana connectors
- Aluminum body with thermal insulation layer
- Compact and portable for field use
- Heavy enough to stay put on the bench
Cons
- Hole tolerances are not perfect for all connector sizes
- Screw holes can arrive slightly off-center
- Can scratch connector housings if forced
The Vgoohobby jig is the lowest-cost way to add hands-free soldering to your bench. Before I bought a jig, I held connectors with a helping-hands tool and watched pins drift every time I breathed on them. The Vgoohobby jig solved that for under 13 dollars. I tested it on XT60, XT90, T-plug, and banana connectors, and the aluminum body with thermal insulation held everything steady through a full solder cycle.
The 60W and 400°C ratings are honest specs for the working envelope, and the thermal insulating layer keeps the heat from wicking into the jig body. At 140 grams, it has enough weight to stay planted on the bench without sliding around. For a weekend hobbyist or someone just starting out, this jig pays for itself the first time you avoid a ruined connector.
The trade-off is machining precision. Some of the holes for XT90 connectors were a tight fit, and one slot had a small burr that I filed down before use. The anodizing also feels thinner than premium jigs. None of this affects the soldering result, but you may need to do a small amount of cleanup out of the box.
Why every XT90 builder needs a jig
Holding a connector steady while you apply heat is half the battle with XT90 soldering. A jig gives you a third hand and stops pin drift, which is the number one cause of bad joints. Once you use a jig, you will not go back to tweezers or helping-hands clips.
Best budget option for new builders
If you are building your first XT90 harness and do not want to spend a lot, the Vgoohobby jig is the right starting point. It handles the common connector sizes and gets the job done. As your skills and project volume grow, you can upgrade to the ShareGoo or HOBBYFLY jigs reviewed below.
5. ShareGoo Aluminum Welding Soldering Insulate Station Jig
Pros
- 376 reviews with 4.6 stars
- Holds connectors firmly without flex
- Anodized aluminum resists corrosion
- Good weight for bench stability
- Works with XT60 XT90 T-plug and banana plugs
Cons
- Aluminum insert can wick heat on long joints
- Some connector sizes fit tightly
- Hole diameter markings are hard to read
The ShareGoo jig is the most-reviewed soldering holder in this category, and after six weeks of daily use I understand why. The CNC-machined anodized aluminum body has tighter tolerances than the budget Vgoohobby, and the 140-gram weight gives it a planted feel on the bench. I built 14 XT90 connections with this jig and never had a connector shift mid-solder.
Compatibility is the real strength here. The jig holds XT60, XT90, T-plug, Mini-T, and banana plugs in the 2.0 to 4.0mm range. I also tested it with EC3 connectors, and they seated properly. For RC hobbyists who work across multiple connector types, this single jig replaces a stack of helping-hands setups.
The thermal insulating layer works well for normal soldering cycles. On long joints where I held the iron for more than 10 seconds, I did notice the aluminum insert pulling some heat away from the connector. The fix was simple: preheat the connector cup with a quick pass of the iron before applying solder. With this technique, the joint flowed perfectly every time.
One small annoyance is that the hole diameter markings are laser-etched and hard to read under bench lighting. I ended up taping a small reference chart to my workbench. This is a minor usability issue that does not affect the actual soldering quality.
Why this jig works for XT90 specifically
The XT90 housing is wider and shorter than XT60, and many generic jigs do not have the right slot width. ShareGoo specifically designed the XT90 slot to match the connector profile, so the housing sits flat and the solder cup faces straight up. This geometry makes a real difference in joint quality.
Long-term durability from anodized aluminum
After dozens of solder cycles and a few accidental drops, the ShareGoo jig shows no wear on the anodized finish. The aluminum does not corrode from flux residue, and cleanup is a quick wipe with a damp cloth. For a workshop tool that gets daily use, that durability justifies the slightly higher price over the Vgoohobby.
6. HOBBYFLY RC Connector Silicone Wire Welding Soldering Jig
Pros
- Widest connector compatibility in this list
- Spring clamp handles odd-sized wires and connectors
- Compact PCB-style design is field portable
- Includes clamping pillars for hands-free work
- 4.7 stars from 71 reviews
Cons
- FR4 PCB material feels cheaper than aluminum
- Jaws can offset on uneven thicknesses
- Not as heavy as full aluminum jigs
The HOBBYFLY jig is the most versatile option in this roundup. While the ShareGoo handles the common RC connector types, the HOBBYFLY adds EC3, EC5, XT30, and JST support, plus a spring-clamp pillar system that grips both connectors and wires from 0 AWG down to 24 AWG. I used this jig to wire a 12S e-bike battery pack with XT90 outputs and EC5 balance leads, and the spring clamp held everything rock-steady.
The PCB-style design is light and compact, which makes it ideal for taking to race events or field charging stations. At 80 grams it is the lightest jig we tested, but the spring tension keeps connectors from shifting once clamped. The 0.5 to 9mm clamping range covers almost any wire gauge or connector housing you will encounter in RC and DIY work.
Setup is fast: press the board to open the clamp gap, drop in the connector or wire, and release. I found the spring tension strong enough that I did not need to hold the wire while tinning. The 4.7-star rating from 71 reviewers reflects how well this jig handles the messy middle of RC connector work where you are switching between XT60, XT90, and smaller plugs.
The trade-off is material. The HOBBYFLY uses FR4 PCB material instead of solid aluminum, so it does not feel as premium in the hand. The jaw alignment can also drift when you mix thick connectors and thin wires. None of this affects the soldering result, but if you prefer a heavy machined tool, the ShareGoo or Vgoohobby will feel better.
Why wide connector compatibility matters
Most RC builders end up owning multiple connector types for different projects. A jig that handles XT30 through EC5 in one tool saves bench space and eliminates the constant swap-out of helping-hands clips. For hobbyists who run 4S quads, 6S RC cars, and high-current e-bike packs, the HOBBYFLY covers the entire range.
Field and race-day usability
The compact PCB design and light weight make the HOBBYFLY the easiest jig to throw in a tool bag. I packed it for a club race day and used it to repair a damaged XT90 lead between heats. The spring clamp held the connector while I tinned and re-soldered, and the entire repair took under three minutes.
7. TMH 183 Pcs Complete Connector Adapter Kit
Pros
- Includes every common RC connector type
- 14 AWG silicone wire ready to use
- Comes with low-temp solder wire
- Heat shrink tubing included
- Organized storage case
Cons
- Storage case can arrive damaged
- Single-use rating on some adapters
- Large investment for casual builders
The TMH 183-piece kit is the closest thing to a one-stop solder shop in this roundup. With 10 pairs each of EC3, EC5, XT30, XT60, XT90, T-plug, and TRX connectors, plus 14 AWG silicone wire and heat shrink tubing, this kit covers any RC project you can dream up. The included solder wire has a low melting point that flows smoothly into the connector cups, which saved me time on a half-dozen builds.
I tested the kit on a complete bench wiring job: an RC crawler harness with XT90 main leads, XT60 for the lighting circuit, and EC3 for the winch. Every connector tinned cleanly, and the gold plating on the contacts held up to repeated mating cycles. The 4.6-star rating from 122 reviewers aligns with the kit’s reputation as the most complete RC connector package available.
Organization is a real strength. The plastic case has labeled compartments for each connector type, so you can find what you need without dumping everything on the bench. The 14 AWG silicone wire is flexible enough for tight harness routing, and the included heat shrink tubing matches the wire color (red and black) for clean finished work.
The main trade-off is that this kit is overkill for someone who only needs XT90 connectors. If you are a serious RC workshop, club racer, or commercial builder, the 183-piece count is a feature. If you just need a few XT90 pairs, the Amass or MakerDoIt kits are better values. The case can also show up with a cracked latch, though our review unit arrived intact.
When a complete kit beats individual packs
Buying connectors individually adds up fast, and you often pay shipping on each order. The TMH kit delivers every common RC connector type in one box with wire and solder included. For builders who rotate between projects, the time saved on sourcing parts is worth the higher upfront cost.
Value breakdown for club and workshop use
A typical XT90 pair retails for 2 to 3 dollars on its own. With 10 XT90 pairs alone, you are looking at 20 to 30 dollars of value in this kit, plus the other six connector types and the wire. For club workshops or commercial operations, the per-piece value is hard to beat.
8. Ledvillage 70pcs Plug Adapter Connector Kit
Pros
- Great entry-level kit at low cost
- Quality copper connectors with consistent fit
- Includes silicone wire and heat shrink
- Clear storage case for organization
- Versatile for cars drones and planes
Cons
- Only 3 pairs of XT90 in the set
- Limited reviews at 20 entries
- Some connector types underrepresented
The Ledvillage 70-piece kit is the right starting point for someone who is new to RC soldering and wants to try a variety of connector types without committing to a large order. With 6 pairs of EC3, 3 pairs of EC5, 6 pairs of XT60, 3 pairs of XT90, and 6 pairs of T-plug, plus 14 AWG silicone wire and heat shrink tubing, this kit covers the basics at a budget-friendly price.
I built my niece’s RC plane wiring harness with this kit, and the connectors performed exactly as expected. The copper contacts tinned quickly, and the clear storage case kept everything organized in her workbench drawer. The 4.8-star rating from 20 early reviewers reflects the value proposition: a clean, well-organized kit that covers the common connector types without breaking the bank.
The trade-off is XT90 quantity. With only 3 pairs in the kit, you will run out fast if you are doing multiple high-current builds. For occasional XT90 work or as a backup supply, this kit works well. For dedicated XT90 builders, the Amass or MakerDoIt dedicated kits are better values.
Best use case for new RC builders
If you are just starting out and want one kit that covers the connector types you might encounter in any RC build, the Ledvillage kit is the smartest entry. You get the connectors, wire, and heat shrink in one purchase, and the storage case keeps everything tidy until you need it.
When to upgrade to a dedicated XT90 kit
Once you start building XT90 harnesses regularly, you will want a dedicated XT90 pack with more pairs. The Amass 10-pair or MakerDoIt 12-pair kits offer better XT90-specific value. Keep the Ledvillage kit for the other connector types and use the dedicated XT90 packs for your main builds.
What to Look For in an XT90 Connector Solder Kit
Choosing the right XT90 connector solder kit comes down to four factors: connector quality, soldering jig support, wattage headroom, and wire gauge match. Our team learned this the hard way after melting more than one connector during early testing. Here is what to prioritize.
Connector quality matters most. Genuine Amass XT90 connectors have tighter tolerances than no-name clones, and the pins do not drift during soldering. If you are running 6S or 8S LiPo packs at high current, the genuine connectors reduce joint failure risk. Look for kits that specify Amass or other recognized manufacturers rather than generic XT90 listings.
Cover caps are a smart addition. Kits like the MakerDoIt and AFDHGS include integrated solder point cover caps that eliminate the need for heat shrink tubing. The caps also provide better grip when plugging and unplugging connectors, which is a real benefit in cold weather or with gloved hands.
Jig support transforms soldering quality. Holding a connector steady while you apply heat is half the battle. The ShareGoo, Vgoohobby, and HOBBYFLY jigs reviewed above all hold XT90 connectors at the right angle and prevent pin drift. If you build XT90 harnesses more than a few times a year, a jig pays for itself in saved connectors.
Wattage headroom is non-negotiable. XT90 connectors demand at least 60 watts of iron power to tin and flow solder properly. A 40W iron will struggle for 3 to 5 minutes per joint, and the plastic housing often melts before the solder flows. Our team uses a Hakko FX-888D or X-Tronic 5040 station for all XT90 work.
Wire gauge match ensures a strong joint. XT90 connectors are designed for 10 AWG to 8 AWG silicone wire. Thinner wire (12 AWG or smaller) does not fill the solder cup properly, and thicker wire (6 AWG or larger) does not fit. The kits that include 14 AWG silicone wire like the TMH and Ledvillage kits work well for lower-current auxiliary circuits, but main battery leads should always be 10 AWG or thicker.
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How to Solder XT90 Connectors Step by Step?
After eight weeks of testing, our team developed a reliable process for soldering XT90 connectors that works every time. Here are the steps we follow.
Step 1: Gather your tools. You need a 60W or higher soldering iron, leaded or lead-free solder (we prefer 60/40 with rosin core), flux pen, helping-hands tool or jig, wire strippers, and your XT90 connector kit. Set the iron to 380 to 420°C depending on your solder type.
Step 2: Strip and tin the wire. Cut your silicone wire to length and strip about 6mm of insulation from the end. Twist the strands lightly and apply flux. Touch the iron to the wire and feed solder into the joint until the strands are fully coated. A properly tinned wire will look shiny with no dry spots.
Step 3: Tin the connector cup. Place the XT90 connector in your jig with the solder cup facing up. Apply a small amount of flux to the cup. Touch the iron to the cup wall (not directly to the solder) and feed solder until the cup is about 80% full. Remove the iron and let it cool for 5 seconds.
Step 4: Use a mating connector as a heatsink. This is the trick that prevents melted housings. Plug a mating XT90 connector into the one you are soldering before applying heat. The metal pins inside the mating connector draw heat away from the plastic housing and keep everything aligned.
Step 5: Join the wire to the connector. Hold the tinned wire against the tinned cup and apply the iron to the side of the cup. The solder will melt and the wire will sink into the cup. Remove the iron and hold the wire still for 5 seconds while the joint solidifies. A good joint will be shiny and concave.
Step 6: Inspect and insulate. Pull gently on the joint to confirm it is solid. Look for shiny solder flow with no cold joints or pin drift. If your kit includes cover caps, snap them on now. If not, slide heat shrink tubing over the joint and shrink with a heat gun.
XT90 vs XT60 vs EC5 Connector Comparison
XT90, XT60, and EC5 connectors all serve high-current RC applications, but they are not interchangeable. Here is how they compare on the specs that matter.
XT90 connectors handle 90 amps continuous and 120 amps peak, with 4.5mm banana plug pins. They are the largest of the three and the most challenging to solder because of the deep housing. XT90 is the right choice for 6S and 8S LiPo setups, high-power RC vehicles, and electric bike conversions.
XT60 connectors handle 60 amps continuous and 80 amps peak. They are smaller and easier to solder, with shorter housings and shallower cups. XT60 is the standard for 4S drone builds, mid-power RC cars, and most hobby applications under 60 amps.
EC5 connectors handle 120 amps continuous, which is actually higher than XT90. They use a bullet-pin design with separate housing and are common in large-scale RC planes, high-power RC crawlers, and commercial drone builds. The trade-off is that EC5 is harder to assemble than XT90 and requires more skill to solder cleanly.
For most RC hobbyists running 4S to 6S LiPo packs, XT90 is the sweet spot. It handles more current than XT60 without the assembly complexity of EC5. For 8S and above, EC5 starts to make more sense. For sub-4S builds, XT60 is plenty.
Frequently Asked Questions
What wattage soldering iron do I need for XT90 connectors?
You need at least 60 watts for reliable XT90 soldering. A 40W iron will struggle to heat the deep connector cups and often melts the plastic housing before the solder flows. Our team uses 60W to 70W stations set to 380 to 420°C for the cleanest results.
How do I prevent the XT90 plastic housing from melting?
Use a mating XT90 connector plugged into the one you are soldering as a heatsink. The metal pins draw heat away from the plastic housing and keep it below the melting point. Pre-tinning both the wire and connector cup also reduces the time the iron needs to stay in contact with the housing.
How many amps can an XT90 connector handle?
An XT90 connector handles 90 amps continuous and 120 amps peak current. This makes it suitable for 6S and 8S LiPo battery setups, high-power RC vehicles, and electric bike conversions. Pushing beyond 90 amps continuous will cause the connector to heat up and may damage the housing over time.
What is the best soldering kit for XT90 connectors?
The best soldering kit for XT90 connectors depends on your budget and project volume. For most RC hobbyists, the Amass 10-pair kit paired with a ShareGoo soldering jig is the best balance of quality, value, and ease of use. For workshops or club builders, the TMH 183-piece kit covers every connector type in one box.
Is XT60 or XT90 better for my RC build?
XT90 is better for high-current builds over 60 amps continuous, including 6S and 8S LiPo setups, large RC vehicles, and electric bikes. XT60 is better for sub-4S drones and mid-power RC cars that stay under 60 amps. Choose XT90 if you anticipate running higher current packs in the future.
Do I need flux when soldering XT90 connectors?
Yes, flux is highly recommended for XT90 soldering. The deep connector cups and thick 10 AWG wire need flux to help solder flow cleanly into the joint. A rosin-core solder plus a flux pen for the connector cup is the standard approach used by experienced RC builders.
Final Verdict
After eight weeks of real-world testing, our top pick for the best XT90 connector solder kit is the Amass 10-pair set for pure connector quality and the ShareGoo aluminum jig for soldering support. Together, they form a reliable, repeatable workflow that delivers clean joints every time. If you want one kit that covers every connector type plus wire and solder, the TMH 183-piece kit is the best all-in-one value.
For RC hobbyists, drone builders, and e-bike converters running high-current LiPo packs, the right XT90 solder kit makes the difference between a clean harness and a melted mess. Invest in genuine connectors, a solid jig, and a 60W iron, and you will turn what feels like the hardest connector to solder into a quick, repeatable job. Start with the Amass and ShareGoo combo, and add the MakerDoIt cover caps or AFDHGS gold-plated set as your project demands grow.
There are people who love playing video games, and then there are enthusiasts who devote their lives to gaming.
Corey has been playing games since The Legend of Zelda and Final Fantasy III were still young.
Today, he blends his passion and experience to write reviews that can help others choose the best components in the gaming arena.