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

I'm using the 8300 mAh version of this product to power four Wolf Module 4.1 watch winders which are kept in a safe. Some batteries I've tried shut down power if the load is very small, such as when the winders are idling between charge periods. That effectively turns off the winders and wipes out the memory settings. But the Talent Cell stays on and performs pretty much as if the winders were being powered by an AC wall adapter.Before first use, I used the AC adapter to fully charge the Talent Cell, then connected it to the winders, which are all pigtailed together. All four charge LEDs were lit. That was on September 8th. Now, ten weeks later, the Talent Cell still displays two of the four charge LEDs, and all the winders are working perfectly, and away from the view of potential burglars. Because I'd need to run an extension cord into the open safe every 90 days to charge the Talent Cell while it's still powering the winders, I decided to remove it from the safe for charging and not use the splitter cord. This wipes the memories, but it's preferable to hauling the entire bank of winders out of the safe along with the Talent Cell. Bottom line, this is a very good product for my application, and with plenty of life between charges. As a bonus, it cost about half of what I paid for another brand that had about half of the mAh.

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 bought this to power an old 9 volt electronic measuring instrument rather than recelling the internal NiMH battery. So far it works very well for that. It lasts significantly longer than the original batteries. Since power is switchable to 12v, it also found a home powering a game camera and testing 12v circuits in our boat.This ended up on my workbench rather in the box with the equipment I intended it for. It is a better executed than most devices like this I have tried. Well worth the money.

TalentCell's Rechargeable Lithium Ion Battery Pack's are well built. powerful and perfect for recharging items or powering up projects. The multiple outputs on this unit make it extremely versatile. Perfect for powering robotics, lighting, etc. I own several TalentCell products and have always been completely satisfied.10/04/17Update on my review of the TalentCell Rechargeable 72W 132WH 12V/11000mAh 9V/14500mAh 5V/26400mAh DC Output Lithium Ion Battery Pack. This Power Bank has been powering up all sorts of electronics projects including led cubes. It has performed flawlessly forover a year but now will only max out at 10.3 volts. The light on the charger started flashing red and green and it no longer seemed to be charging. Tried other 12.6 volt Li-ion chargers but batteries still wouldn't take a charge. Contacted Talentcell to see what the warranty was only to find out it is 1 year but to my surprise they offered to send a replacement. And they had it here in just a few days. Nice people to deal with. Their products and service are excellent. I've owned three of their power banks and this is the first time I had problems. Of coarse it had to be the one I've come to rely on the most. Thankfully TalentCell stepped up and made it all good.

I used this without problem for a few years until one day I accidentally plugged in a center-ground instead of a center-positive 12V power adapter. The power pack blew up. I would have appreciated if the designers had spent 10 cents on a Schottky diode to protect against reverse polarity power. For this, I am docking it one star.Other than that, it was a decent product; impressed with the battery life. I found it particularly useful that it had both 12V and 5V USB outputs and typically used both at the same time.