Talentcell Lithium ion Battery Pack NB7102, Rechargeable Li-ion Power Bank with DC 24/19/5V and USB-C 5/9/12/15/20V Output for Laptop, Notebook, Smartphone, Camera and More

Very convenient and functional power supply. I purchased this battery supply to power my Spark 40 without having 120v available. It has many voltage outputs of with the 19v power must helpful for powering the Spark 40

Asus Routers use 19.5VDC as an input. This works out perfect to provide backup power. And it had a large enough charger that it will charge the battery from low to full charge wile powering the Router. Works perfect, runtime is multiple hours for a Router and it is a lot smaller than a traditional ACP UPS, cheaper, and has longer run time since it is not wasting power converting DC to AC then Back to DC for the power brick on the router. Once it is turned on it will stay on. I have a couple of these to power a mesh WiFi in a work from home environment. No more loss of internet because of a power blink.

I used this battery to power my Spark 40 guitar amp, but it has quit taking a charge. Great while it lasted, but I expected a long life! I held off posting a review hoping it would come back to life, but no luck. Update: The manufacturer is sending me a replacement - I couldn't ask for better service. I'm changing my rating to 5 stars. Good company!

Great for portable charging, very satisfied.

Seemed like a perfect solution to power my Spark 40. Alas, it did not last even a year before it just stopped power any of the output ports. When I first got it, it worked great at power the Positive Grid Spark 40. It worked for several sessions, I then did not try to use until the other day. I acted like the battery was drained. I plugged it into the charger that came with it. The charger lite up, but it was green, which by the little manual, means it is fully charged. I then tried it again, no go. Tested all the output ports, nothing. Sent a email to service department at the company, though I am not counting on them to respond. A waste of 70 dollars.

I use this to power my Spark 40 amp. Charge lasts a long time, giving me 5-6 hours when using the amp.

Works well powering my spark 40 amp, charges fast and long lasting for any location.

overall great product I even purchased a second battery because it works well and holds a long charge. the only downfall I have found and reason for 4 out of 5 stars is because it will not charge my Laptop ACER Zenbook Pro 15 OLED. The adaptor that will fit it is actually the HP adaptor however it glitches and doesn't have a secure adaption causing it to not work 98% of the time. Great product except the adaptors. Both batteries and adaptors have the same problem.

Excelente calidad y muy buen producto