I used the XC-100 for years and used it to revive batteries. I have no doubt this 400 will be just as great.

Order was delivered promptly and correct. This is my 3rd Quadlink kit and I absolutely love the convenience of 4 in 1.

These folks were great to deal with and the products are first class. Highly recommend Pulse Tech!

It’s a great product

It seems to be very great 👍

I bought the first one in 2018 for a battery that was 3 years old not taking a charge. It took 2 days for it to bring the battery back. Later that same week I used it to winch a truck with a brake locked onto a trailer. The battery did the job, but that drained it. After I put it back on the Pulsetech charger and used it for another 6 years. 3X the life might be a little much but it for sure doubled the life. When batteries cost $200 now its well worth it. Granted this works best for items that sit a great deal. Sulfates build the most in warm weather. It also doubled the life of the riding mower battery. Tractors, collector cars, plow trucks any thing that sits this is the answer.

Maintained my battery full, easy to install.

Xtreme Charge® XC400 4-Amp Battery Charger/Maintainer

Put this on a battery that I couldn't get to take a full charge with a standard charger. When I put it on the indicator said %25 and I let it do it's thing. A few hours later I looked and it was up to %50. Overnight it brought the battery back to a full %100. This thing does heat up when it is working so I will be mounting it to some type heat sink. Tried it on an AGM that was completely drained and it indicated "Bad Battery" and wouldn't charge. I knew this battery was done but tried it anyways. Happy so far with this tool!

SP 3
Just set it up on 10/12/24
It keeps the battery charged up for my Ham Radio Communications.

Put on a battery that was idol for about a year. It registered as a bad battery. Put the XC400charger back on the battery and it is working fine.

Using charger to hopefully breath some life into some older batteries. So far it looks good. Made in China, and the leads are a little on the cheap side, but I believe the technology is solid.

I have a box trailer which I store my motorcycle. The trailer has 12v battery for interior lights. I recently had to move my trailer to a storage lot that has no 120v power available. This solar panel and QuadLink 4 Channel Charger Multiplier solution allows me to keep a maintainer and splitter for me to use on the trailer and motorcycle battery. I just installed this so I have no experience with the durability, but the solution is perfect for this application.
I had some questions about whether this product was what I needed after receiving the product. I emailed technical support and they called me on the phone to discuss. EXCELLENT customer support!

Works great! Worth the price!

14 days isn’t really enough time to know if a battery maintainer is doing a good job but they want a review. It seems to be well constructed. The installation guide was clear. Shipped quickly. I’m happy so far.