will the 5100a work for 8 or 10 AWG wire and lugs of the type provided with the "battery spot welding" kits?

These are meant for factorty tuck and roll cable ends

Will this work on molex open style connector pins

for larger wire sizes, maybe. you would need to look at actual Molex pins to see whats required on open style connector pins also keep in mind this tool is also between 8 and 10mm wide ( see pictures ) if the crimp length on the pin is shorter, you will be crushing the wire insulation also as a side note - if you are going to crimp a lot of connectors, I would get the table top model https://www.amazon.com/gp/product/B07VPHDXG5

What thinnest gauge can 5100A crimp?

The crimping tool goes from 5 amp to 100 amp lug. The five amp plug is real small the largest you would get largest would be 18 gauge wire 22 Gage wire would be the lowest gauge. This tool is very well made and worth the money.

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iCrimp Battery Cable Lug Crimping Tool for Open Barrel Lug,Lead-Free OEM Battery Terminals,B Type Crimper for AWG 13-3

Product ID: 98737343

Details

Brand
IWISS
Color
Blue
Grip Type
Ergonomic
Handle Material
Alloy Steel
Item Weight
2.8 Pounds

💪Ergonomic long handles with 5 rivets

⚙️Precision EDM-cut jaws

🛠️One-piece high-grade steel head

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€ 89.53

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Sold byAmazon ItalyDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Crimp Like a Pro — Durable, Precise, Unstoppable!

EFFORTLESS POWER GRIP - Ergonomic long handles and 5 tight rivet joints maximize mechanical advantage and reduce hand fatigue.
PRECISION CALIBRATION - Adjustable crimp depth with secure locknuts ensures consistent, professional results even after years of use.
VERSATILE COMPATIBILITY - Designed for AWG 13-3 wires and a wide range of battery lugs including lead-free OEM terminals.
BUILT TO LAST A LIFETIME - Crafted from a single piece of special tool steel with rust prevention for unmatched durability.
FLAWLESS CRIMPS EVERY TIME - Wire EDM-cut jaws deliver perfect B-shape crimps with zero burrs or gouges.

The iCrimp Battery Cable Lug Crimping Tool is a premium, heavy-duty crimper engineered for flawless B-shape crimps on AWG 13-3 wires and lead-free OEM battery terminals. Featuring precision EDM-cut jaws, a one-piece high-grade steel head, and ergonomic long handles with 5 rivet joints, it offers superior durability, effortless operation, and adjustable calibration for consistent professional results. Trusted by pros for marine, automotive, and industrial applications, this tool ensures your crimps are strong, reliable, and built to last.

Specifications

ASIN	B07M5WKH5Y
Best Sellers Rank	#103,150 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #361 in Crimpers
Brand Name	IWISS
Color	Blue
Customer Reviews	4.6 4.6 out of 5 stars (176)
Grip Type	Ergonomic
Handle Material	Alloy Steel
Item Weight	2.8 Pounds
Manufacturer	IWISS TOOLS
Model Number	IWS-5100A
Size	IWS-5100A(5A-100A)
Specific Uses For Product	Crimping battery cable lugs, open barrel lugs, and lead-free OEM battery terminals
Unit Count	1 Count

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