Talentcell Portable Power Bank NB7102, Multi Voltage Output Power Supply with DC & USB-C Port for Laptop, Smartphone, Camera

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

Initially bought this to make my Spark 40 practice amp more portable. However, I recently bought a DJI OM4 that I took on a camping trip. From Thursday night, to sunday morning. I charged my DJI OM4 2x, my iphone 12 pro max 4x, AppleWatch Series 6 3x, and ran a USB powered camping fan 3 nights for 6-7 hours. When it was time to pack up the camp sunday morning I still had half the battery capacity left! Holy cow, this thing is amazing! If you want a long lasting portable battery pack with a ton of connection options, this is your device! CON: I wish it could be charged via USB instead of requiring 110v adapter to charge it. However my truck has built in 110, and it only takes a few hours to charge. So it charged on the way home.

Very versatile portable power. Be careful, though, about the polarity of whatever you want to power. When I used this with a guitar pedal and the supplied battery connector, it would not work. When I installed a polarity-changing adapter on the cable, it worked. Given that, I've purchased two of the batteries. If you have one of the original Spark 40 amps, this battery will power it for 4 hours or more. You'll need the polarity changer though.

I purchased this pack to allow portability of my Positive Grid Spark guitar amplifier. The first pack I received either had defective cell(s) or a defective charge/analyze circuit. All led’s of the 4 step led charge indicator would illuminate when the pack was charging, but only 2 or 3 would illuminate when the charger was disconnected from the pack, even after 5 days of charging. Amazon did send out a replacement pack immediately. The new pack displayed a 75% charge upon arrival, I was worried, but after a few hours of charge time all 4 led’s illuminated as expected. I haven’t used the Spark for more than 2 or 3 hours at a time but so far the battery pack has worked great and the portability aspect is great. I’ll update the 3 star rating in a few months after more testing and use. I’m always leery of “unusually named” crappy Chinese lithium battery products and their very optimistic rated vs. actual capacity. Lol By the way, the magnetic phone mounts work great and far better than I expected as an option for mounting the battery. One year later…Replacement pack does not fully charge and dies after adding only 20% charge to my iPhone 14 Pro Max. I maybe have 15-20 hours of use with the Spark amp. Really disappointed. I’ll take it apart eventually and replace the cells. Update….Who cares……This pack, yep #2, is an absolute POS. I’ve made multiple attempts to reach the seller!!!😂😂😂😂 Who am I kidding. Great idea, but super crappy execution. I look forward to a proper, tear down and analysis! Ordinarily wouldn’t take the time but I’m almost irritated enough to add it to the list of projects!

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!

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

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.

Best buy for sure. Easy to charge. Led for power level nice feature. Can bring my Spark 40 Amp anywhere.

Dernièrement, un derecho a frappé ma région et pour la première fois de ma vie, l'électricité a été coupé pendant presque 36h. Heureusement que j'avais cette batterie. Elle a été bien utile. J'ai été en mesure de recharger mon téléphone, ma tablette, un haut-parleur Bluetooth et mes 2 paires d'écouteurs. Quand la batterie est complètement déchargée, il faut environ 3h pour la charger avec l'adaptateur fourni. Selon l'angle, l'indicateur de charge n'indique pas bien. Par exemple sur la photo on voit 3 dels allumées mais il faut regarder bien en face, en réalité seulement 2 sont allumées. Quand toutes les dels sont éteintes, il faut recharger rapidement car il ne reste plus beaucoup de courant. Une chose agaçante, quand les prises USB sont dans le bon sens, l'indicateur de charge se retrouve en dessus (voir photo). Pas très pratique. La charge rapide est parfaite. Mon téléphone Samsung A50 passe de 20% à 90% en environ 1h08. Mon ordi portable se recharge très bien aussi grâce aux connecteurs fournis. Bizarrement, il n'est pas nécessaire d'appuyer sur l'interrupteur pour avoir du courant sur la prise DC2, le courant est toujours présent. Mais il faut appuyer sur l'interrupteur pour avoir du courant sur les prises USB-C et USB-A. J'aurais préféré que cette batterie se recharge aussi par USB-C (pour la recharger dans une voiture par exemple) et qu'elle utilise un panneau LCD pour indiquer la charge en pourcentage. Il y a peu de batteries portables qui offre le 19,5 Volt, c'est pourquoi, j'ai choisi celle-ci. Donc un bon achat, reste à voir la fiabilité à long terme.

Works with MPC ONE

I don't ever leave reviews but this was brutal. I used it to power a positive grid spark a few times then didn't use it for 6 months. After that, it wouldn't hold a charge. Plugged in until green charge lights are all lit then it dies right after unplugging it. In total I don't think I even got 4 hours use out of it. Some people seem quite happy with it, I guess I got a dud.

Very good product, but the usb-c don’t work. I’m not sure if all of them are like that or l just got the bad batch. That’s the only problem so far.