Used these to power the sequenced RGB LEDs on my bicycle spokes. I tie-wrapped one to each axle. Each axle has 8 LED strips, drawing about 2.5 amps with all LEDs on "white". They have survived a fair bit of rough riding and dirt on local bike paths (paved and unpaved) and are still working fine.

For the cost, you won’t find anything better!My only complaints is the lack of "power lock”. The "on” switch sometimes activates itself while bumping around in my purse during travel.

I needed a way to power the LEDs I sewed into my Oogie Boogie cosplay this year. This was super small and powerful enough to work for 3 days. It is lightweight enough I had it in a sewn in pocket and didn't 'drag' down the skirt.It holds a great charge and doesn't get hot during usage.

This thing is awesome. I purchased it so that I could use my Spectra S2 pump without being plugged in and I am so glad I did! I have now used my pump for 15-20 minutes at a time, 3 times a day, for 3 days straight now and it's only lost one of the little light dots indicating it still has tons more juice left before it needs charging. I'm SUPER impressed with the battery life and it powers my pump with no issues. I don't notice a difference in strength of the pump using this vs. when it's…

This battery works tremendously well for charging my phone on the move. I’ve used it 4 times in 2-hour intervals and it still doesn’t need to be charged. The battery life was surprising to say the least.

I used these batteries to power my battery operated ski glove liners. They are a little big, but I slip one up each of my jacket sleeves. I have gone from 1.5 hours on high from a central battery, to 4+ hours on high.

I got this device to keep my LED lights that I keep under my wheelchair charged I have only had to charge this once in the last 3 months is an awesome hold and works perfectly for what I need. Very lightweight and would definitely recommend this product

I bought this to run my (tr)uSDX HF transceiver, and it generates a ton of noise on USB. This may not be a problem for the vast majority of users, but it is for me. The noise is not present on 12V, just the USB port.Otherwise, this is a very good battery pack. It is compact and easy to use. The charger is painfully slow - you can find better ones for $10 on Ebay.

This is a nice battery pack at a good price. I'm using it to power LED strip lights. The USB outlet is a nice addition to allow it to charge a cell phone in a power outage. My only issue is the indicator LEDs which are on all the time - whenever the pack is switched on. I'm using this in a closet and want to minimize recharging and the indicator LEDs might shorten the life between recharging. As a general backup for small electronics, the LED indicators are not an issue. Overall, I'm very happy

Bought a LED strip kit with the worst battery pack I've ever seen. Was pretty pissy to have to buy this, but man do I love having it around everywhere I go! Using it for only half an hour 4 days out of the week it lasts forever, and the little usb plug-in gives me peace of mind on my phone battery and other rechargeables.

This small 12volt 3Ah Li-ion battery works really well. I'm using two of them in series for 24volt WiFi LED lighting modules. The capacity and run time exceeds my expectations. I would definitely buy again for future projects. Probably the only strange thing is that when you plug in the charger you have to remember to switch the battery to the on position. Other than that it works perfectly.

Got these for led lights. I leave the box on, plugged into led lights. It drains the battery even when the lights aren't on. Lasts maybe 3 days. Pointless for my application

I used this to run a device which needed like 2A @ 12V. When fully charged (5/5 leds), it seems to hover just about 11.6v DC.-1 star for unreliable voltage output: After about an hour of use, the led shows about 3/5 left but the output voltage is reduced (< 10.5v?) and my device is unable to run.-1 star for super slow charger: Seems to take about 3h to get fully charged from 3-5 leds. Full charge seems to take 6h for 1-5 leds.I wish the leds were more representative of the actual usable…

After 15 months of consistent use my batteries have finally come to the end of their life. Pretty impressive. They only downside to the small unit is it takes a long time to charge. I have the larger talent cell unit it charges much faster. Both are excellent. I highly recommend this product for any of your 12v power needs. Not enough to power 16 feet of 2811 LEDs but my main uses are running LED lights during installation on motorcycles to spare the owner's battery. On my LED motorcycle…

Make SURE TO TURN POWER SWITCH TO ON POSITION WHILE CHARGING. Takes a while to fully charge but has enough amps to push most 12v smaller electronics but larger devices as well such as 12vdc guitar amps and so much more.

Unit works great! Use it in my fun safe. Bought in tandem with the LED tape lights and works like a champ! Been in there for maybe 3 months and still on original charge. I use it for maybe 5 minutes once a week.

My use case is demanding: running a Raspberry Pi field computer with a monitor. These power banks are a great value, and they represent the best you can obtain from modern LiPo technology. The reviewers who complain about the charging time are technically uninformed; this is not a RC monster truck battery system. First I purchased the 1800mAh model; but I needed more run time so I got the 3000mAh model here. Just remember, you need to turn it on to charge. I would purchase again.

This is my second battery pack from this seller. The power last a very long time for my 18 watt Jeep light that I have on my motorized bike.

I bought this to power my Motif Medical Luna breast pump and so far it has worked wonderfully. It is small, compact and light weight. I don't notice a difference in suction when using this vs. being plugged into a wall outlet. Even when it is about to die the suction stays the same. I can pump 3, 25 minute sessions for 4 days before I have to charge it. I did purchase a 1 foot Right Angle DC Power 5.5mm x 2.1mm Patch Cables Wire Male Male (make sure to purchase a right angle cord), to plug into

Works great just what I was looking for going to be perfect for my SLS camera I'm building shipping was super fast definitely recommend this product to anybody