It didn't work

doesnt work at all

Charged my Tacklife T8 jumper with no issues but the unit does get extremely hot while charging. Once charge was finished it did cool down. Also was nice to have an integrated LED to show charge status as well but the temperature of the charger was a bit concerning to be honest.

I did, essentially, my standard testing on this adapter. It involves some "abuse" in that I'll always try to draw more load current than the manufacturer claims it can supply. All power supplies for consumer use should have current limiting/over-current protection of some sort. This supply seems to take the less common approach of allowing current to increase, but backing off on the voltage as current increases, to limit the power output. That can actually work quite well in some applications, especially where the load includes a large capacitance that needs to be charged up. Some supplies simply shut down if the load current is excessive, and will never end up charging a large capacitance.This adapter was able to supply greater than 1.0 A (as is claimed on the product page, and as is printed on the adapter), but not continuously. As to whether it might work for your device, it might; I can't say, because I only did general lab testing. Generally I check out these supplies for more generic purposes, to inexpensively power my electronic projects.First, what's good...* The adapter is lightweight and has a nice blue LED light that tells you when power is on. The light appears to be powered from the 15 V output, because as I increased current, and the voltage dropped, I could see it dimming.* The adapter makes a valiant effort to continue operating in an overload condition. Up to about 2.4 A, the supply is putting out some non-zero voltage. However, once it gets warm, periodically shuts down even with a 1.0 A load. You can see the LED flickering on and off.* Unlike another adapter from this company, this one didn't die, despite testing under some overload conditions.Now, what's not so good...* I put the supply into slight overload at 1.05 A. After several minutes it was uncomfortably hot to the touch. Also, after not too long, it started to periodically shut down, attempt to restart, then shut down again.* I would not call this a 15 W adapter. It can apparently do about 14.75 W, which is close, at room temperature (70 F). But I'm guessing in a warmer room on a hot day, it would be even less than that. The design should have enough margin to produce full rated power at any reasonable temperature.* The regulation on this adapter is rather poor. I think it's mostly due to thin copper wire; I'm measuring about 0.5 Ohms of output resistance at the end of the cable. It's not a serious issue, but it does mean that the adapter probably can produce 15 W, but not at the end of the cable.* From the output resistance graph ('rOut'), you can see the wire resistance showing flat, up to about 0.8 A. Above that load current, the resistance rises rapidly; that means the supply is going into current limit. So the supply is actually throttling back before it reaches its full rated load current.In summary, if the price appeals to you, you might give this adapter a try, and as long as your load doesn't need more than about 0.9 A for any extended period, this supply might work for you.

I accidentally threw away the charger for my tacklife battery pack so I needed a replacement and this one does the trick. Would recommend for anyone in a similar predicament.