KMASHI 11200mAh Portable External Battery Pack, Power Bank Backup Battery Portable Charger with Flashlight for Smartphones iPad and Tablets (Black)
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- Smooth varnish allows you to power up in style, while 4 status LEDs keep you informed of remaining capacity. Simultaneous charging and lighting.
- Ultra-high density battery cells with aluminum construction faceplate make this the world's most compact 11200mAh external battery.Portable and safety.
- High Capacity 11200mAh( 42Wh )charges large-capacity phones like the Galaxy S4 or almost to an iPad 3 4 air with output fast charging.
- Built-in high light LED lamp for dark or low-light environments. Allows you to use when in travel,outdoor,camp,emergency and etc.
- Package includes: Highly Compact 11200mAh fast charger power bank w/LED lamp set,Micro usb cable,User manual
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With such massive capacity, in such a compact package, the Kmashi external battery is perfect for flights, road trips, or just any time you're away from an outlet.
Marooned in transit forget your OEM adapter? With the Kmashi 20000mAh External battery, prolongs your battery lifetime wherever you are. Holding enough power to charge most smartphones, keep your gadgets being activated for days.
Simple, unobtrusive features, such as one-touch battery status LEDs and a built-in flashlight, give you everything you need out of a battery without sacrificing aesthetics.
Battery Capacity: 112000mAh
Weight: 224g For Optimal Use
Compatible with all Apple and Android smartphones, tablets and other USB charged devices with a 5V charge input. The iPod nano, Samsung and Asus tablets and some GPS and Bluetooth devices are not supported.
1* KMASHI 11200mAh Power Bank with LED Flashlight
1*USB Charge Cable
1* User Manual
1 Year Warranty and Friendly Customer Service
Top Customer Reviews
Both do not live up to their ratings, even when you consider the power conversion losses.
For the Kmashi 11200mAH unit, I fully charged it overnight then put it on a battery analyzer, discharging it with an 800mA load to see what capacity it can put out (see photo).
Voltage starts out at 5.07V but drops slowly as the battery depletes.
Start - 5.07V
after 1AH delivered - 5.00V
after 2AH delivered - 4.95V
after 3AH delivered - 4.90V
after 4AH delivered - 4.89V
after 5AH delivered - 4.82V
after 5.9AH delivered - 4.70V
The unit turned off after only 5955 mAH was delivered.
If this unit has 4 qty 18650 2800mAH cells inside (11200mAH total), I would expect the mAH to be:
4 x 2800 x 3.7V = 41.44 Watt hours * 90% conversion = 37.296 Wh /5V = 7459 mAH
For their 2800mAH unit, output voltage holds up much better, but the delivered mAH at 5V is just under 1400mAH and this was with a 500mA load.
When charging both these units, charge current was limited to about 0.73A so it can take a LONG time to recharge (my charger is capable of outputting 1.25A). Even using my iPad 3rd gen charger, capable of charging at a 2.1A rate, the current draw was only 0.73A. I suspect the charging IC is just a linear lipo regulator so the charge current to the 18650 cells is 1:1 for the input current. If true, and if one goes by the advertised mAH rating of 11200, then at 0.73A charge, full charge takes 15.5 hours.
It can charge the ipad for one full time.
It can charge the mobile phone 5 times.
It takes 10-12 h to be fully charged.
It has a powerful lamp.
As soon as I opened the package, I plugged it in to charge because I'd need it the next day. I already had my alternate usb charger plugged into the laptop so I just used that instead of the cable the battery came with. The next day, the 4 LED lights said it was fully charged. Later in my day, I found my cellphone was about to power off due to low battery. I plugged the battery into my cellphone using the usb cable the battery came with. NOTHING. I tried over and over, turned off my phone all together, pressed the power button on the battery a couple times and nothing. It wouldn't power up my phone. After getting to work, I tried plugging it in via my cellphone usb cable. It worked fine. So, the battery works fine. The cable they sent to charge it with is useless.
The night light/spot light is bright. A little too bright for a bedside night light but perfect for finding a key hole on a doorknob in the dark or walking to your car in a bad neighborhood. (bad guys see someone with a light, they tend to be less likely to bother you)
EDIT: After 2 charges, I plugged the regular usb into the wall and I tried to plug the micro USB into the side port and it pushed the plug further into the battery case. Now, I have to ensure the battery is plugged into something that won't wiggle or move at all or it'll stop charging the battery due to a lost connection to the cable.
Stay away from this battery.
I initially chose this battery pack over similar products because of its built in flashlight. I thought that it was an intelligent and clever addition to the battery, as it would most likely outlast actual flashlights by days (if left on continuously). I tested the flashlight outside during the night, and found that it is not quite as bright as larger handheld flashlights are, but it emits enough light to see what is in front of you fairly easily. It can also come in handy when trying to read documents in the dark, or to provide temporary light during a power outage.
This battery has a 11200 mAh rating, which is enough power to charge most cellphones four or five times over. My Galaxy S5 has a custom battery which has 7500mAh. I have tested this device with that phone, and found that the device can completely charge the phone's larger battery once with enough power to charge it about to about 50% left over. My phone has enough battery power to last at least 10 days with heavy use. For a normal cell phone, this battery pack has enough power to charge it completely multiple times. Most battery packs that are sold at stores or online have much less charge.
When the battery is being used, it automatically detects when the device it is charging is fully charged, or becomes disconnected, and stops the energy transfer. This feature can save a surprising amount of energy and make the battery life on the device last much longer.
Overall, I would recommend this battery pack to anyone who is looking for a small yet high capacity battery pack.
Most Recent Customer Reviews
Incredible amount of battery power. This can charge an iPad from 0% to 80% and it can recharge my phone from 0% to 100% twice, and my phone has a large battery 3000 mAh. Read morePublished 5 days ago by Amazon Customer
the capacity isn't as advertised. can only charge 1 iphone 6 plus, then it die, maybe mine was defectivePublished 6 days ago by Ethan
Died after 35 days, tried to return, couldnt. This was my 2nd kmashi product the first was awesome. I bought one of these for a nephew and his is working still, but mine died on a... Read morePublished 7 days ago by DjLxSandiego
Crap. It charges so slow, is enormous for its size and it broke within a few weeks.Published 9 days ago by Adam Riemer
Excellent battery pack when you need a recharge and don't have access to an outlet.Published 10 days ago by PJ56
After much comparison shopping I gave this as a gift to my brother. He took it with him while camping over the weekend and charged his phone three times with it! Read morePublished 17 days ago by Ruth