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Joey L
September 3, 2025
This was exactly as described and has worked very well for the last month. It was bought as a power supply for a portable stereo using a 12 v car receiver. It runs for several hours on a charge and takes several hours to recharge but I have not timed that exactly. It does not get warm and is way less money than most battery packs of a similar capacity. My only complaint and it is a small one, is that you must unplug the 12 volt output socket to put in the charging cord. It also requires you to know that the power switch must be on in order to charge the unit. Even if off, the indicator lights come on, giving you the impression something is happening.So, be sure you read the instructions before using it. Although it states it will put out 5v usb, I do not think I would have bought this unit for a 5v usb battery pack. There are similar packs of similar capacity that are much cheaper. However there were few for 12 v output. So it fills the bill very well and is much lighter and cheaper than an equivalent lead-acid 12 v battery.***This is an update. I have had it for 10 months now and I use it for a few hours every weekend to power a portable USB speaker. It is still going strong and has been very reliable. Given that there are basically no other comparable units I am very happy with this unit.New update: I have had this unit for over 8 years and it is still running well. No failures, no problems except it takes a shorter time to deplete the charge. But for an 8 year old pack, it is doing really well.in fact, just because it is still working, I'm adding a star.
Jason K Lau
August 24, 2025
Works perfectly with my M12 hoodie. Battery life is great, lasts for about 2 days on the medium setting.
LW
August 8, 2025
I use these batteries to power remote control traps I build to trap feral cats. I also use this to power the hotspot if I am going to use it for an extended period time. I recently went to a theme park with my daughter, and I was able to charge my iPhone several times and also charge my daughter's iPhone. We has it charging one or our phones throughout the day, and we still had 3 lights when we returned to our hotel room. They are a powerful back-up battery, but it's important to read the instructions and keep it on when recharging. When I loan them out, I tape a note to them to remind people to keep them on while recharging. I use these all the time. If I think it's going to be wet or misty out, I take precautions to keep the battery dry.
Aamzuser
August 5, 2025
Works very well for low voltage usb cameras (not ones that require quick charge) or devices that use 12v barrel jack. Comes with a special charger for itself.
May Twelve
August 4, 2025
This humble power source, though small in stature, is mighty in performance. It delivers a steady and reliable current, ensuring that all manner of devices, from lanterns to lutes, are powered with unwavering consistency.The lifespan of this battery is commendable, lasting far longer than many of its peers. Whether in times of peace or moments of need, it stands as a steadfast ally, ready to provide the energy required.One must also admire its ease of use. It fits snugly into any coat pocket, and its construction is both sturdy and safe. Verily, it is a product of fine craftsmanship.Yet, no tale is without its minor flaws. While this battery excels in many areas, there are rare occasions when its power does wane slightly quicker than anticipated under heavy usage. However, this is but a small blemish on an otherwise exemplary record.In conclusion, I bestow upon this battery a well-deserved 4 out of 5 stars! 🌟🌟🌟🌟 It is a reliable and valuable companion for all your power needs.
Steven Hansell
July 23, 2025
Just buy it. Worth it ! I use it on my ebike - carry it in bag attached to my handle bars. My second purchase - for extended bike trip. The switch makes it easy to know if it’s on ! Does not get hot when charging ! Nice size and easy to carry when using it to keep my iPhone charged at sporting events. It powers both my iPhone and 12v spot lights on the front of my ebike, lasting a couple hour ride. You know when the power has been depleted, as the 12v lights just turn off! Very satisfied with this purchase.
ï€Basilphart
June 18, 2025
Bought six so far. Very long life.
Jason R. Garrett
May 27, 2025
So far it has worked great in my Milwaukee jacket. Hand warmers and jacket on full power got close to 5hr out of it and that was just for testing. If you don't use hand warmers and keep jacket on lower setting it should last much longer. Get the 2amp charger on here if you want faster recharge time.
Edgar
May 13, 2025
Buena relación calidad precio la uso en mi telescopio nexstar 6se y trabaja correctamenteSatisfecho con la compra
Jason
February 23, 2025
I needed a 12v battery supply for a portable audio recording system I had put together and this fits the bill perfectly. I run a 8ch Zoom F8n recorder which cannot run direct from USB power unlike my older Zoom H4n so I needed a new power solution to run it.This works perfectly and has just the features you need.- 12v DC output suitable for a range of applications- USB power output- Simple LED battery display which isn't distracting- Physical toggle power switch- NO AUTO-OFF!One issue I have had with some USB power banks is they will power off if no power is drawn. This was an issue on my last recording setup if I disconnected a phantom mic the power draw from the recorder and the small mixer was so little the power bank would power off so I had to leave a mic always connected if I needed at a notice.This battery has power enough to last all day with my setup and can easily power strip lights and other 12v gear too. It was so useful I purchased 2 of these.Came back to just update my review simply to say I purchased mine in 2018 at a cost of $59aud, not on sale just the price at the time. I now see these are $149aud. Needless to say I haven't bought from Amazon for some time as I find it is kind of a ripoff all round these days but there you are.
Shopper in Burnaby
February 18, 2025
I have a digital synth keyboard that needs 12v DC and this runs it nicely for a gig. Running AC via extension chord might pose a tripping hazard or might get unplugged. Nice to be self-contained.
Juan Manuel Martinez
February 1, 2025
Tiene buena carga, la utilizo para alimentar un micrófono
Darcy at inventorArtist
December 19, 2024
This is an excellent solution to power my electric jacket.It's nice and flat so fits in the pocket better than the Milwaukee batteries. Plus it has much more capacity.Has a cell phone USB charger too.Really glad I bought it.
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