Kaisi Battery Tester Battery Charger and Activation Board Battery Repair Kit

Had new screen put on wifes iPhone7. Somehow they messed up the charge port/logic board and the phone would not charge. Had close to 2 years worth of pictures and texts that had not been backed up. The battery in phone only had 40% battery and was not enough to do backup. I ordered a new high capacity battery and the Kaisi charge board and charged the battery fully before installing to be sure there was enough juice for backup to complete. Worked like a champ...

Awesome, both the Apple Store, and an iPhone repair facility were unable to get my 6+ to turn on, NOR charge. The repair facility put a new battery in, but was unable to get the phone to charge. Since my 6+ took a long time to boot up, it would run down the battery, giving us only about 15 minutes of "ON" time. With additional new batteries from his stock, we got the phone to come back on, where it was evaluated until the final battery died. I asked that he sell me a new battery, since I would go home, turn on the 6+. and then hook it up to iTunes to get a backup started via wifi.Well, the battery didn't last long, so I searched the web and came across this board as I looked to purchase a bench DC adjustable charger *to charge the battery myself manually"; for about $160+. During this process, I found the KAISI board and tools. This allowed me to save $150, and fully charge the 6+ battery. So, I was finally able to perform a full backup, as well as an update of the IOS. I'm going to go to the repair facility to see if the replacement lower lightning port and headphone jack assembly would now work. Without this, I'd likely have lost all my data as no other options exist; well, I guess a VERY EXPENSIVE recovery firm could help, but..... SO I WHOLEHEARTEDLY BACK THIS ITEM. For the charge ability the vast amount of tools, and non-"Chinglish" instructions. They sell an awesome product. FIVE STARS BABY

Although initial impression from the virtually instant "good fully charged" indication I got from reactivating my sister's iPhone 5s battery was that there is no way this actually worked, it must be floating a fake puppet voltage that will collapse upon attempted use, once I replaced the battery into the iPhone, it was actually able to stay on and charge to 100% without further incident. It had been "lost" for so long she forgot her iPhone's password, lol. Surprised pleasantly that the claims that this can reactivate lost batteries is true. Thank you! Worth the cost.. It paid off big time versus cost of replacement battery even as just a raw part to put in myself. Although I needed a magnifying lens to read the super-tiny writing on the PCB and aligning the power connector was fairly not easy, and although the instructions are super weird including changing the voltage supplied by a "USB" connector to less than 5 volts (which I figured was the wrong thing to do because USB is a 5 V standard so I disregarded this as incorrect interpretation of the original Chinese directions), it still worked as advertised. Better than my expectations which were iffy that this would actually succeed and avoid having to replace the battery on a phone that wasn't charging and died the second it was taken off the charger connection.

Wish I could give 4.5 stars (due to lack of instructions but youtube has a lot of those already) but leaving it at 4 so they can update these instructions. I bought it for charging my iphone 6 battery as my phone and “genius bar” refused to help charge the battery. This is simple to use though, just connect your dead battery to any side denoted(both sides are the same) and see it the green light comes on and you see a voltage on the right display screen. Means it still has some charge left, if not don’t panic, just plug the micro usb cord with a standard iphone wall charger and it will start to charge the battery and you’ll see a current on the left display screen which means the battery has started to charge.Also, you can do the following with this device:- you can charge another battery by attaching it one of the other pin terminals- you can also use the usb connecter to connect your phone with a direct wire to charge it simultaneously- the tools to open your phone are also of quality so be sure to use them if you don’t have a regular one already not worne outThanks for saving my phone and I could retrive my data to be transfered over to an android, good bye apple!!!

The media could not be loaded. Kaisi precision toolsThe Kaisi apple battery charge board is a very unique prouduct.It allows you to test the battery of 10 diffrent iphones and 4 iPad externally,As well as test other iPhones via an on board USB port and an lighting cableThe left displays show power going into the battery in ams and the left shows volts.It works in two oreantions,It also has a green indication light and a battery activation switchIt comes with everything you need except you supply your own usb power brick.I recommend this product. If your dealing with iPhones, even if your not opening them the USB port along with the digital display can show you in real time what’s happing, and how much power is actually going into the current device.

Great tool! Just wish it had better instructions to go with it. Not much on the internet/YouTube to help either, at least not in English...LOL

Must have for any mobile repair or micro soldering shops! If you do not have one of these you are missing you first troubleshooting step unless you have an inline USB amp meter. In addition to amperage reading you can charge multiple types of batteries at the same time. I use the board to charge my batteries while doing board work, when I am done, the batteries are ready to go at 100%.

False advertising. Claims to charge iPhone 8 batteries but there are no terminals to do that. There are terminals from iPhone 4 all the way to iPhone 7 plus.