TalentCell12V Lithium ion Battery Pack, 11.1V/9000mAh 99.9Wh Portable Power Bank, DC 12/9V and 5V USB Multiple Output Li-ion Batteries for LED Light Strip, CCTV Camera, Mobile and more, Black

I purchased this battery to use with a portable dvd player that requires a 9.5 volt supply, this battery has a 9 volt output jack which does the job well. Using the dvd’s internal battery I can play 2 full length movies before a recharge is required but with this backup battery, I can play 9 movies before recharging is required. Overall I’m very pleased with this battery and fully recommend it. The outputs are 12 volt, 9 volt and 5 volts (usb) which can be used to recharge a mobile phone / tablet etc. Great item if you’re out and about and have no access to mains power. It’s not cheap but it’s worth the money.

The manufacturer's of this product knew what they were doing when it comes to peoples needs and designs. I use this for my 12v guitar amp/pa system and its brilliant. I also love the fact you can also plug in your effects rack too at the same time with the 9v socket, great design. With an hour and half of playing guitar, singing and backing tracks its still at full. I reckon this will last a good few hours before I need to charge it at least. Heard it can last up to 3 months well if that's the case I will report back here with an update. This is better than using the mains because it gives you freedom to move around and playing in any spot and is great for outdoor work. Highly recommended.

Large battery at modest price, purchased to provide long power supply for heated gloves for paragliding.

Great customer support, they answered all of my questions very fast, I only been using the product for a couple of days and it works good on the 12v interface i get 12.4v, also i did a bit of research and it appears that my device has 9 LG branded 18650 batteries inside . LG along with Samsung and Panasonic make very good li-ion cells. Another positive thing is that the cells production year appears to be 2017 so they are fairly fresh. On the down side the USB port is outputting bellow 5V, sometimes as low as 4.6v, typical USB chargers output 5.2V that low voltage is not good for phone charging. The other negative thing is that the cells max current charge should not exceed 2500mAh per cell that means that if you use the included charger that is just over an Amp then it takes ages to charge and I mean ages... so i am not sure if the charging circuit of this device is that sophisticated ether. You can also say that it can be partially used as a UPS but when the mains is plugged in anything you connect to this battery will draw power from it not from the mains so it will discharge even on that scenario. Last thing on the positive side i liked also that they have included a few different cables. Over all a good product and good quality but would be nice if the Talentcell team gave this product an upgrade to charge at 2C (faster charge) and full UPS functionality.

The Battery shows full lights charge when you plugged in for charging, but not longer provide any power.Where is the warranty after 3 months?I couldn't find any info.

I have several power banks for phones, tablets and even for more VR headset (Meta Quest 2) but I also require powerbanks for astronomy hobby.This powers up my Celestron Nexstar 8SE mount for a good four or five evenings of visual astronomy on one charge. I used to have the more expensive and higher capacity Tracer polylithium power pack but it became faulty after ten years of use. This is a far cheaper solution but equally effective and has the added bonus of including a dual 12V dc cable (no more unreliable cigarette lighter plug connectivity).Highly recommended for campers and astronomers with 12V devices.I will purchase another one for my 12 hair dryer (which I don't use for hair drying, its useless for that! But for removing dew on camera or telescope lens).

Power reserve lasts much longer than other power banks I have plus it's versatile for different voltages

I’ve read a number reviews commenting on the capacity and discharge characteristics of this battery. From initial tests I have found the following: there seems to be no issue in maintaining 5.1V on the USB even at 2.3A, and even after 6000mAh of running. I therefore conclude the USB output works very well. The 12V output sat just below 11V after 4000mAh of running. I found this was strictly comparable with a high-end, “market-leading”, battery I have of the same capacity (albeit this battery has been through more charge cycles). So initial impressions are that the Talentcell is pretty good value, and any drop in the 12V output is almost identical to my LiIon battery that cost twice the price. If your need is just the USB output, then this battery looks a very good solution. If your application requires an absolutely flat stabilised voltage of 12V, then this may not be for you, but for my 12V application (and probably many other applications), this is a good cost-effective solution. It may be that the practical capacity is slightly overstated, but again I expect this is true for most batteries packs.