Talentcell Portable Power Bank, 99.9Wh Multi Voltage 12V/9V & 5V USB Power Supply for LED Strip, CCTV Camera, Heated Jacket, Phone, Spectra Pump

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 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 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!

The first battery I received was defective. It worked for a second or two and then went dead. I contacted the company and they sent me a replaced quickly and with no fuss or reluctance. The replacement works great. I use it to power a Boss GX-10 multi effects pedal for a guitar. It will run that pedal for many hours on a single charge. As recommended, you'll need a polarity reverser for most guitar pedals.

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've had this battery just over a month, so take this review with a big grain of salt. The whole point of a rechargeable battery is that it performs well over time. So soliciting a review after a few weeks can show little when talking about an item that is supposed to last years. I use this unit outdoors to power an Arduino chipboard that accepts signals from the digital encoders on my telescope and broadcasts the information via Bluetooth to my tablet running a planetarium program so that I know where the telescope is pointing. The Arduino box is powered for up to 10 hours. A very busy observing session means I move the scope about 100 times. This takes as close to zero power as any application possibly could. The battery has a row of 4 green LED lights that when all are lit indicates a full charge. Using the battery as I do, the 4 little lights are still lit when I put the telescope away. The wall charger does indicate some drain, but the slow-charging unit (10 hr from flat) indicates a full charge in about an hour. I've used the battery in both low and high humidity (heavy dew) conditions in temperature ranging from 40-80degF. I'll be out in freezing conditions at least once this winter (I've observed at 0degF) and if there is a grossly noticeable difference, I'll amend the review. I've followed the instructions for charging (the battery must be switched ON and the charger plugged into the 12V outlet), about the only operator error possibile barring physical abuse. The battery has worked as advertised every time. So yes, I would recommend this battery and assuming past performance predicts future results (note: a friend has had one of these batteries for 2 years put to the same use) then the $50 I paid is a good investment.

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 Adapter Only complaint I have is it takes a LONG time to fully charge and I think it should have come with the cigarette lighter adapter.

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.

Fantastic for running camping lights, charging phones, recharging most rechargable items with correct connections

Exelente

I would, and have bought it again and again and again. I use them for my video camera. Great quality, they last many charges. I would say at least 5 years.

Funciona perfecto

To power my jaket