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 for AWG 13-3 | Lead-Free OEM Battery Terminals,B Type Crimper

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

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

B/.159

Duties & taxes included

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Description

🔧 Crimp Like a Pro — Power, Precision, and Durability in Your Hands!

VERSATILE COMPATIBILITY - Designed for AWG 13-3 wires and 5A-100A terminals, handling both small and large battery lugs seamlessly.
BUILT TO LAST A LIFETIME - One-piece special tool steel head with rust prevention keeps your tool reliable for years.
FLAWLESS B SHAPE CRIMPS EVERY TIME - Wire EDM-cut jaws ensure perfect, burr-free crimps for professional results.
EFFORTLESS POWER WITH ERGONOMIC DESIGN - Long handles and 5 tight rivet joints maximize mechanical advantage and reduce hand fatigue.
PRECISION CALIBRATION FOR CONSISTENT QUALITY - Adjustable cams lock securely to maintain perfect crimp depth even after heavy use.

The iCrimp Battery Cable Lug Crimping Tool by IWISS is a heavy-duty, precision-engineered crimper designed for AWG 13-3 wires and 5A-100A battery terminals. Featuring wire EDM-cut jaws for flawless crimps, a rust-resistant one-piece steel head, and ergonomic long handles with 5 rivet joints, it delivers professional-grade results with less effort. Its adjustable calibration ensures consistent performance over years of use, making it the go-to tool for serious professionals and DIYers alike.

Specifications

ASIN	B07M5WKH5Y
Best Sellers Rank	#103,847 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #339 in Crimpers
Brand Name	IWISS
Color	Blue
Customer Reviews	4.6 4.6 out of 5 stars (181)
Grip Type	Ergonomic
Handle Material	Alloy Steel
Handle Type	Handle
Item Weight	2.8 pounds
Manufacturer	IWISS TOOLS
Model Number	IWS-5100A
Number of Items	1
Size	IWS-5100A(5A-100A)
Unit Count	1 Count

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