TEMCo Hammer Lug Crimper Tool - Crimps 8 AWG to 4/0 Battery & Welding Cables (Workbench-Mountable)

Solid, affordable, does its job. Cheaper than the knockoffs but better quality. Good job Amazon showing the more expensive knockoffs first. I wish there was a way to swap between a plus and a minus on the crimp imprint but it's not a big deal, that's what red and black heatshrink are for.

Bought this to make my own cables for an RV wiring upgrade. Worth every penny. It's smaller than you'd expect, but quite tough. I've made multiple cables using 4/0 welding wire, 2 awg welding wire, 1awg thhn and 6 awg stranded wire. This crimper handled them all perfectly. Pro tips: Use good copper lugs appropriate for the gauge wire you're crimping. Find a firm surface, concrete or steel will do. Use a small sledge, 2-4 lbs, but one that you can still operate comfortably with one hand. Hold the lug snug to the wire with one hand and hammer with the other hand, at least for the first tap or two. Start with a decent tap, just to seat the crimper in the lug so when you whack it with the next strikes it won't slip. 4-5 good whacks (for 4/0, less for small wire), you'll hear the sound change as you compact that wire and turn it into essentially solid metal at the crimp. When that sound changes, you're crimped! No adjustments needed between different wire sizes, it's self adjusting. I also added solder to my connections. I found this worked best: flux the copper wire and the inside of the lug beforehand, then crimp as described, then heat it up and add solder (some of my larger lugs had no holes in the lug, other than the big one the wire goes in, so I drilled a 1/8" or so hole in the lug to add the solder thru. Worked great, but honestly, you don't even need to solder these connections. The crimper makes them that strong! Recommend heat shrink wrap, the good thick kind with glue inside. Strengthens the connections, makes it waterproof and looks professional

The Hammer Lug Crimper Tool is a highly practical and versatile instrument designed for heavy-duty crimping tasks. Its robust construction ensures durability and long-term use, making it ideal for both professional electricians and DIY enthusiasts. The tool’s ergonomic design provides a comfortable grip, reducing hand fatigue during extended use. It effectively crimps lugs and terminals with a consistent, secure connection, ensuring reliable electrical performance. Additionally, its compact size allows for easy storage and portability. Overall, the Hammer Lug Crimper Tool is an excellent investment for anyone needing a reliable and efficient crimping solution.

Works every time. Simple, no tech

I would have preferred to have a high quality hex crimp tool, but my budget dictated differently so I hesitantly purchased this tool expecting it to produce crude but acceptable crimps. After using it for several crimps it has exceeded those expectations. I have used it with 2 AWG and 4 AWG wire as well as slightly smaller 2 gauge and 4 gauge. The crimps are very secure and pass rigorous pull tests, I do not anticipate any issues. At first I was not sure how hard or how many times to hit it but when used on a very solid surface it seems that the "feeling" of the strike changes when the crimp is complete. It was not until AFTER my first few crimps that I realized the numbers on the side of the striking pin indicate how far to drive the pin for 3/0 AWG, 1/0 AWG, 4 AWG, and 8 AWG wire, I imagine this could be a useful feature... The bottom of the tool is shaped in a way that produces a very nice crimp on the bottom half of the connection. The top part of the crimp is not as pretty as it makes a flat circular dimple with an x in it. Despite it being less clean in appearance than a good hex crimper it does not excessively distort the width of the connection and provides a very secure crimp. I would be hesitant to use this type of crimp for making the interconnect cables for a battery bank as I expect that the resistance of the connections may be less than consistent, but I do believe the connections are more than qualified to carry high currents in all situations that do not require the most precise balancing. The attached photos show the shape of the lower crimp surface as well as the size and construction of the tool. I had added heat shrink prior to thinking that I should add photos, so I do not have any images of the connections at this time. I will try to remember to add some next time I use the tool. In summary, I would recommend this tool for making crimps on line/load cables, but for battery bank interconnect cables I would personally prefer to either purchase pre made cables or rent/purchase a proper crimping tool.

This crimper does a fantastic job. I have used it on 2/0 cable. Using a 2lb hammer and a rigid support underneath the crimper (I use my steel workbench), I use one strong hit to crimp the connector and a second lighter hit to confirm the seat. The connector takes the shape of the tool on both the top and bottom. It cannot be removed from the cable. I use Shirbly 2/0 connectors which I but from Amazon. Good Tool.

I don’t usually write reviews but I decided to write a review for this product, this hammer crimper worked like a charm. I put new 4 gauge wire in my bass boat for my trolling motor power supply wire and this hammer crimper crimped the battery cable lugs on like a champ!👍

Works well, but handle crimper or hydraulic crimper would be better

I bought all different types of crimpers, pneumatic and plier style, and this hammer on tool is the only one that makes a solid crimp, every time. The other styles aren't reliable based on wire size and lugs of same size and most times it makes a loose crimp and you need to size down and it damages the lug so bad it needs to be thrown away and restart. Not with this hammer on tool, it makes a clean solid crimp every time and it doesn't get bothered with wire or crimp manufacturing tolerances. The only issue is when you need to make a crimp on-vehicle, you just can't hammer it in there, which is where the other tools offer a practical solution. If you can make a new wire or remove wire from vehicle, then this is your go to tool. This tool is sturdy and high quality. It doesn't say on the box if it's made in the USA, but I suspect it could be.

Works great.

I've had this for several months and the best thing I can share is that it's been solid enough to withstand all the many repeated hammer blows I've dealt it. Now don't get me wrong, I have better things to do than take out my frustrations on a meagre little crimping tool. If I were to list the benefits of the tool in descending order I'd have to say, crimping first, and taking out my frustrations a distant second. (OK, maybe a close second.)

Great product, i bought this to put lugs on my battery and power inverter cables my solar system. Update, I use this the second time to put 2/0 longs on wire and the spring came out. It still did it job. But lil disappointed