Talentcell 12V Lithium ion Battery Pack, 11.1V/9000mAh 99.9Wh Portable Power Bank, DC 12/9V and 5V USB Multiple Output for LED Light Strip, CCTV Camera, Heated Jacket, Mobile, Spectra Pump, and More

This thing works well and had a good price when I bought it. Battery capacity seems very good, too. I like that it has 5 volts output on the USB port, and then two barrel jacks with 9 and 12 volt DC outputs and lots of included cables. It's really convenient for powering tons of things, and it's nice as a backup for charging the cell phone for days during power outages. It can also power almost any telescope and telescope accessories out there for several hours depending on your setup. The only thing that's a bit odd is to charge it, you have to turn it off and plug into the 12v output port, which I guess becomes a charging port when you turn if off. I don't know how it responds to things that are incorrectly wired, or if you tried to charge it without turning it off first. When using less expensive and less known branded products like this, I think it's important not to assume anything and read the instructions carefully. Sometimes, online shopping sites that sell lots of these cheap, imported products like this often do not ensure that the products they sell conform to the same standards and regulations we're used to in the US, so it's up to you to determine if a product is safe and has all the necessary certifications, etc. All in all, I like this product and would likely buy it again assuming the price stays comparatively low.

I had owned this company's older, smaller version from a couple years ago and couldn't find it come this winter. I ordered this one because the last was great and for the added time of use provided by the larger bank. The older one fit in my M12 chest pocket nicely with an extra power cord that I ran inside the jacket and you never noticed it being there. This one though, is a brick; much larger, much heavier, which I knew going into it but it's just as uncomfortable to have in the back pocket as the larger M12 batteries. The BEST PART is that I found my old one (unused since last winter) still holding a full charge and ready to go! I will put this one on the usb port in my backpack and use it with my jacket when I know I'll be in the cold for a lengthy time. If their battery packs are good enough to hold a charge for about a year without use or charging, there's no way I'm giving this one up. I'll find a use for it!

I have a QRP (low power) radio that needs a 9 Volt power supply. This power unit provides 9 volts and operates my radio perfectly. I get several hours of power when running in FT8 mode.The unit is well-build. I provides a 12 volt output as well and comes with several adapters and plugs. A recharging unit is included.I'm very pleased with the performance.

I needed a power source that is compact and portable for my CPC 11 telescope and this was what I needed. It is so small and light I was able to attach it to my fork handle. I connected it to my telescope by a 3 foot power cord. No more cord wrap for me. I used it to track an imaginary object in the sky to test it. The battery lasted close to 8 hours. I am very pleased with this battery, had no power issues with my telescope.

I bought this primarily to power my Masterbuilt Gravity Series smoker direct on the 12v DC connection. I've used it a half-dozen times now and works great. Went 12+ hours on two overnights with it powering the smoker and my Fireboard digital thermometer (via the usb jack) and it only dropped to 3/4 lights after 13 hours.The unit reads 12.6V from a full charge and drops slowly over the course of my cooks (as is to be expected). At 5 hours in, it was still 4/4 lights and 12.4 volts. At 10 hours in, it was still at 4/4 lights and down to 12.2 volts. It switched to 3/4 lights at 13 hours but was still 12.0 volts. I even tried it another day using the USB port with a typical cheap Amazon 5v to 12v converter transformer cable for comparison and after an 8 hour cook (from a full charge) it was still 4/4 lights and 12.3v, so it doesn't seem like using the upscale converter causes any significant power drain.The included power wall wart has an led indicator that changes from red to green when the pack is fully charged. It also includes a Y-adapter cable that allows you to charge the unit while using it, which is very convenient. I've only had my unit about a month but so far so good.

I'm so happy I bought this powerpak from Talentcell. I needed something to power my old Meade telescope and this has performed flawlessly. I was going to buy the smaller version but opted to get the larger one in case I needed to travel someplace for a weekend. This unit has great consistent power and I even use it in my backyard instead of running the power from my house.I've attached it to the tripod using a small bungi cord. The power seems to last forever...I've only recharged it once in about a month.Overall, great choice for remote 12V power. Plus, I can charge my phone while using it!

I bought the 72W 100WH 12V/8300mAh for use with my CPAP a Phillips Respironics System One 60 which takes a 12v 5a input and in testing it lasted more than 2 full nights of use on a single charge with a 7CFM setting on my machine. Compared to the official $250+ batter packs this has a higher mAh rating and costs SIGNIFICANTLY less. It is small and compact and works great. The DC Cable worked directly with my unit, but just in case you may need to get CGTime Car Cigarette Female Socket to 5.5 x 2.1mm Female Jack AdapterOnly complaint I have is it takes a LONG time to fully charge and I think it should have come with the cigarette lighter adapter.