FOXWELL BT705 12V 24V Car Battery Tester Automotive 100-2000 CCA Battery Load Tester Auto Cranking and Charging System Test Scan Tool Digital Battery Analyzer for Vehicle and Heavy Duty Truck

I bought this battery tester based on the reviews and the fact that I recently had a battery go bad and now have several batteries and chargers to maintain. Aside from a simple volt reading, I wanted to see how these batteries were doing. I figured I'd give it a shot because it would show up a little better. or, at the very least, different measurement data than a standard load tester. br>br>At first glance, the unit appears to be in a good condition. Because the case's hinge is molded into the plastic, it will most likely break after enough use. This appears to be a consumer-grade tool, so it should be fine for typical home shop use; however, closer inspection reveals that the overall quality has suffered for the asking price of this unit. First and foremost, THIS IS NOT A LOAD TESTING EQUIPMENT. A conductance tester is a device that measures the resistance between two conductors. It does not place a significant load on the battery. Look for a "carbon pile" tester if you need a load tester. And, for the same price as this unit, you can choose from a number of very nice options. Now, let's talk about the unit's quality. All of the action will take place in the clamps. Two wires are inserted into each clamp. On one side of the jaws, you'll notice a small section that's been isolated and riveted on with a piece of plastic. ODD VOLTAGE READINGS FOR THOSE WHO GET THEM The battery terminals on both sides of the clamp must be in contact. This is what's going on if you're getting strange readings. br>br>Reads 36VDC The black lead is not properly connected. The terminal is not connected to the isolated portion of the black lead. Both of the leads are not connected properly, and the isolated section of both leads is not connected to the terminal. br>br>Reads 18VDC BOTH of the leads are not connected properly, and the isolated section of both leads is not connected to the terminal. br>br>Reads 0 br>br> The isolated section of the red lead is not making a connection, and the red lead is not connected at 75VDC. br>br>Now, because the wires connecting the smaller isolated section of the clamp are so badly soldered on, and because this is the only part of the tool that will be used, this thing is most likely to fail at this point. This is most likely the cause of your poor readings. They have soldered a spot on this terminal that is supposed to be wrapped around the wire to make a mechanical connection, but they have instead just dabbed some solder on and relied on the solder for a mechanical connection. A solder connection is not the same as a mechanical connection. It's also worth noting that you must be on the battery's lead post in order to get accurate readings. It's possible that you'll get inaccurate readings if you clamp onto your car's battery clamps or something other than the battery's lead post. br>br>As for the tester section, the case is clearly an off-the-shelf case because it has a molded-in battery compartment that isn't being used for this product, and the keypad has a nice feel to it with positive button presses. Because the keypad is built into the front stick on overlay, if the buttons stop working, you'll have to replace the entire unit. Except for a small circuit board, there isn't much inside this device. To use it, follow these steps: The tester is simple to use, with a large, backlit display that is easy to read. This foxwell tester's voltage readings are comparable to those of my Fluke 87V. The battery test results were also consistent across multiple tests. In terms of the test results, they're a mixed bag. br>br>The majority of the information the unit provides is based on the data you provide. If you enter 500CCA instead of 1000CCA, the "results" will be skewed. I don't find measured CCA, SOH, or SOC to be particularly useful because they aren't truly absolute measurements. The RES MR reading is the most useful because it represents the battery's internal resistance. The majority of my batteries are in the 3-volt range. Internal resistance has a range of 5 points. My one battery, which I expect to fail at any moment, measures just over 9, indicating that it is definitely on its last legs, despite the fact that it measures as a "good battery" according to this tester. It doesn't appear to make a difference whether you enter "in vehicle" or "out of vehicle," except that "in vehicle" will prompt you to test the starter and alternator. Even though my battery was dipping into the 8VDC level under the load of the starter, even after following the prompts, it still says it's good. If this were a carbon pile tester, 8V under load would be displayed as a replacement. br>br>Overall, I'm not sure if this tool is worth the money; you'd have to justify the cost of this unit in terms of technology because what you're getting physically cannot justify the asking price; this isn't a professional-grade tool built to withstand daily use in terms of build quality. If you're only using it to monitor the health of one or two vehicles' batteries, you'd be better off investing in a jump starter and a low-cost DMM. When starting your vehicle, a DMM can tell you if the alternator is working properly, measure the voltage of the battery, and measure the voltage under load. You also have a jump pack in case your battery dies unexpectedly. br>br>I imagine you could use this to track battery health if you took baseline readings on a new battery and tracked them over time, as professionals do with much more expensive equipment and large backup battery banks. But, depending on the application, is it worth it to "predict" a battery failure and replace it, or should you just let it fail and replace it when it does? br>br>As I previously stated, for the same price, you can get a nice 500amp traditional load tester with more physical features. No doubt, because you're dealing with a large current draw and the heat generated, it's more dangerous to use. Before I make a final decision on its utility, I'll have to try it out on some known bad batteries to gain any confidence in the accuracy of the measurements it provides.

Jerry Hodge

| Jun 21, 2021

The BT705 tester will inform you of any positive or negative information. As a professional technician, I had been considering a few of these battery testers. We have one that was given to us by our employer, but it is a farce. br>With the unit provided by the employer, I could test the same battery twice and get two different results. The foxwell BT705 arrived on time and in perfect condition. It is simple to use the unit. In my garage, I have a number of batteries. I tested three of them, and the bad battery was correctly identified. My truck's battery had just been recharged. When I tested it, the BT705 said it detected a surface charge and told me to drain it by turning on the headlights. That was never done by the work unit. It also inquires as to whether or not the vehicle's battery is present. It's been used by several of my coworkers, and I believe we'll have a few in the shop soon. For the price, this is an excellent tool that comes in a sturdy case with slide locks. The kind that flips up has a problem. This purchase has made me very happy. br>br>Suspend your disbelief, 7- I've already purchased two more for fellow technicians at the shop. One had a problem with not being able to read correctly. When I connected it to a 12 volt battery, it only read less than a volt; I was past Amazon's 30-day return period, so I contacted the company directly. After a few emails, they requested that I return it ($13:00). 00) and had it replaced with a new one. My colleague's new unit is performing admirably. Also fantastic was the customer service.

Benicio Browning

| Aug 18, 2021

After doing some research, I decided to give a digital battery analyzer a try. A few years ago, I gave a different model to a family member for Christmas, and they raved about how useful it was in tracking and determining the best time to replace a few dead batteries. br>I decided to buy the Foxwell bt705 after looking at the competition and reading over a dozen reviews. The reviews stated that it was tough, simple to use, and had long leads so that it could be operated while inside the vehicle. I received the analyzer and have tested five batteries with it. One battery that I thought was past its prime needed only to be charged. Another battery that I was going to replace still had life in it, so I'll probably be able to go another year without replacing it. The main difference between this one and the one I received as a gift is that this one will test your starter and alternator as well. br>I was able to remove it from its hard case, connect it, and test my batteries. The instruction manual was kept in the hard case's pocket. The on-screen prompts will walk you through the entire process of testing your battery, starter, and alternator. You can test your battery while it's still connected to the car or while it's disconnected. One had to get out of the car in order to receive the gift. SOH and SOC were two terms I had to look up on the internet. I felt stupid once I realized what it was, but I was glad that it provided those values. br>To summarize, I believe I got a good product at a reasonable price that is extremely easy to use. Wrapping the cables back up and closing the hard case is difficult for me; I wish companies would realize that making a hard case with two posts, one at the top and one at the bottom, that you could wrap the cables around for storage would be much easier than trying to wrap the cables to fit inside a specific area, would be much easier. As a result, the hard case is my only complaint. Others, on the other hand, are not packaged in a protective case. Overall, I give it 5 stars all day.

Gerald Rich

| Feb 04, 2021